Compare revisions

984a6650 · 5ae96f78 · fd0d8b61 · 6ec576a4 · f5bcea89 · d72818db
--- a/.dev-js/.eslintrc.js
+++ b/.dev-js/.eslintrc.js
+module.exports = {
+  root: true,
+  overrides: [
+    {
+      files: ["*.js", "*.vue"],
+      // parser: "vue-eslint-parser",
+      //processor: "@graphql-eslint/graphql",
+      extends: [
+        "eslint:recommended",
+        "plugin:vue/strongly-recommended",
+        "plugin:@intlify/vue-i18n/recommended",
+      ],
+      rules: {
+        "no-unused-vars": "warn",
+        "vue/no-unused-vars": "off",
+        "vue/multi-word-component-names": "off",
+        "vue/attribute-hyphenation": "error",
+        "vue/v-slot-style": "error",
+        "@intlify/vue-i18n/key-format-style": [
+          "error",
+          "snake_case",
+          {
+            splitByDots: false,
+          },
+        ],
+        // "@intlify/vue-i18n/no-unused-keys": ["warn", {}],
+        "@intlify/vue-i18n/no-raw-text": [
+          "error",
+          {
+            ignoreNodes: ["v-icon"],
+            ignorePattern: "^[-–—·#:()\\[\\]&\\.\\s]+$",
+          },
+        ],
+        "@intlify/vue-i18n/no-deprecated-tc": "off",
+        // Fixes for prettier (avoid eslint-config-prettier)
+        // The following rules can be used in some cases. See the README for more
+        // information. (These are marked with `0` instead of `"off"` so that a
+        // script can distinguish them.)
+        curly: 0,
+        "lines-around-comment": 0,
+        "max-len": 0,
+        "no-confusing-arrow": 0,
+        "no-mixed-operators": 0,
+        "no-tabs": 0,
+        "no-unexpected-multiline": 0,
+        quotes: 0,
+        "@typescript-eslint/quotes": 0,
+        "babel/quotes": 0,
+        "vue/html-self-closing": 0,
+        "vue/max-len": 0,
+
+        // The rest are rules that you never need to enable when using Prettier.
+        "array-bracket-newline": "off",
+        "array-bracket-spacing": "off",
+        "array-element-newline": "off",
+        "arrow-parens": "off",
+        "arrow-spacing": "off",
+        "block-spacing": "off",
+        "brace-style": "off",
+        "comma-dangle": "off",
+        "comma-spacing": "off",
+        "comma-style": "off",
+        "computed-property-spacing": "off",
+        "dot-location": "off",
+        "eol-last": "off",
+        "func-call-spacing": "off",
+        "function-call-argument-newline": "off",
+        "function-paren-newline": "off",
+        "generator-star": "off",
+        "generator-star-spacing": "off",
+        "implicit-arrow-linebreak": "off",
+        indent: "off",
+        "jsx-quotes": "off",
+        "key-spacing": "off",
+        "keyword-spacing": "off",
+        "linebreak-style": "off",
+        "multiline-ternary": "off",
+        "newline-per-chained-call": "off",
+        "new-parens": "off",
+        "no-arrow-condition": "off",
+        "no-comma-dangle": "off",
+        "no-extra-parens": "off",
+        "no-extra-semi": "off",
+        "no-floating-decimal": "off",
+        "no-mixed-spaces-and-tabs": "off",
+        "no-multi-spaces": "off",
+        "no-multiple-empty-lines": "off",
+        "no-reserved-keys": "off",
+        "no-space-before-semi": "off",
+        "no-trailing-spaces": "off",
+        "no-whitespace-before-property": "off",
+        "no-wrap-func": "off",
+        "nonblock-statement-body-position": "off",
+        "object-curly-newline": "off",
+        "object-curly-spacing": "off",
+        "object-property-newline": "off",
+        "one-var-declaration-per-line": "off",
+        "operator-linebreak": "off",
+        "padded-blocks": "off",
+        "quote-props": "off",
+        "rest-spread-spacing": "off",
+        semi: "off",
+        "semi-spacing": "off",
+        "semi-style": "off",
+        "space-after-function-name": "off",
+        "space-after-keywords": "off",
+        "space-before-blocks": "off",
+        "space-before-function-paren": "off",
+        "space-before-function-parentheses": "off",
+        "space-before-keywords": "off",
+        "space-in-brackets": "off",
+        "space-in-parens": "off",
+        "space-infix-ops": "off",
+        "space-return-throw-case": "off",
+        "space-unary-ops": "off",
+        "space-unary-word-ops": "off",
+        "switch-colon-spacing": "off",
+        "template-curly-spacing": "off",
+        "template-tag-spacing": "off",
+        "unicode-bom": "off",
+        "wrap-iife": "off",
+        "wrap-regex": "off",
+        "yield-star-spacing": "off",
+        "@babel/object-curly-spacing": "off",
+        "@babel/semi": "off",
+        "@typescript-eslint/brace-style": "off",
+        "@typescript-eslint/comma-dangle": "off",
+        "@typescript-eslint/comma-spacing": "off",
+        "@typescript-eslint/func-call-spacing": "off",
+        "@typescript-eslint/indent": "off",
+        "@typescript-eslint/keyword-spacing": "off",
+        "@typescript-eslint/member-delimiter-style": "off",
+        "@typescript-eslint/no-extra-parens": "off",
+        "@typescript-eslint/no-extra-semi": "off",
+        "@typescript-eslint/object-curly-spacing": "off",
+        "@typescript-eslint/semi": "off",
+        "@typescript-eslint/space-before-blocks": "off",
+        "@typescript-eslint/space-before-function-paren": "off",
+        "@typescript-eslint/space-infix-ops": "off",
+        "@typescript-eslint/type-annotation-spacing": "off",
+        "babel/object-curly-spacing": "off",
+        "babel/semi": "off",
+        "flowtype/boolean-style": "off",
+        "flowtype/delimiter-dangle": "off",
+        "flowtype/generic-spacing": "off",
+        "flowtype/object-type-curly-spacing": "off",
+        "flowtype/object-type-delimiter": "off",
+        "flowtype/quotes": "off",
+        "flowtype/semi": "off",
+        "flowtype/space-after-type-colon": "off",
+        "flowtype/space-before-generic-bracket": "off",
+        "flowtype/space-before-type-colon": "off",
+        "flowtype/union-intersection-spacing": "off",
+        "react/jsx-child-element-spacing": "off",
+        "react/jsx-closing-bracket-location": "off",
+        "react/jsx-closing-tag-location": "off",
+        "react/jsx-curly-newline": "off",
+        "react/jsx-curly-spacing": "off",
+        "react/jsx-equals-spacing": "off",
+        "react/jsx-first-prop-new-line": "off",
+        "react/jsx-indent": "off",
+        "react/jsx-indent-props": "off",
+        "react/jsx-max-props-per-line": "off",
+        "react/jsx-newline": "off",
+        "react/jsx-one-expression-per-line": "off",
+        "react/jsx-props-no-multi-spaces": "off",
+        "react/jsx-tag-spacing": "off",
+        "react/jsx-wrap-multilines": "off",
+        "standard/array-bracket-even-spacing": "off",
+        "standard/computed-property-even-spacing": "off",
+        "standard/object-curly-even-spacing": "off",
+        "unicorn/empty-brace-spaces": "off",
+        "unicorn/no-nested-ternary": "off",
+        "unicorn/number-literal-case": "off",
+        "vue/array-bracket-newline": "off",
+        "vue/array-bracket-spacing": "off",
+        "vue/arrow-spacing": "off",
+        "vue/block-spacing": "off",
+        "vue/block-tag-newline": "off",
+        "vue/brace-style": "off",
+        "vue/comma-dangle": "off",
+        "vue/comma-spacing": "off",
+        "vue/comma-style": "off",
+        "vue/dot-location": "off",
+        "vue/func-call-spacing": "off",
+        "vue/html-closing-bracket-newline": "off",
+        "vue/html-closing-bracket-spacing": "off",
+        "vue/html-end-tags": "off",
+        "vue/html-indent": "off",
+        "vue/html-quotes": "off",
+        "vue/key-spacing": "off",
+        "vue/keyword-spacing": "off",
+        "vue/max-attributes-per-line": "off",
+        "vue/multiline-html-element-content-newline": "off",
+        "vue/multiline-ternary": "off",
+        "vue/mustache-interpolation-spacing": "off",
+        "vue/no-extra-parens": "off",
+        "vue/no-multi-spaces": "off",
+        "vue/no-spaces-around-equal-signs-in-attribute": "off",
+        "vue/object-curly-newline": "off",
+        "vue/object-curly-spacing": "off",
+        "vue/object-property-newline": "off",
+        "vue/operator-linebreak": "off",
+        "vue/quote-props": "off",
+        "vue/script-indent": "off",
+        "vue/singleline-html-element-content-newline": "off",
+        "vue/space-in-parens": "off",
+        "vue/space-infix-ops": "off",
+        "vue/space-unary-ops": "off",
+        "vue/template-curly-spacing": "off",
+      },
+      settings: {
+        "vue-i18n": {
+          localeDir: "./aleksis/core/frontend/messages/*.{json}",
+          messageSyntaxVersion: "^8.0.0",
+        },
+      },
+      env: {
+        es2021: true,
+      },
+      parserOptions: {
+        ecmaVersion: "latest",
+      },
+    },
+    {
+      files: ["*.graphql"],
+      parser: "@graphql-eslint/eslint-plugin",
+      plugins: ["@graphql-eslint"],
+      extends: "plugin:@graphql-eslint/operations-recommended",
+      parserOptions: {
+        graphQLConfig: {
+          schema: "./schema.json",
+          documents: "../aleksis/**/*/frontend/**/*.graphql",
+        },
+      },
+      rules: {
+        "@graphql-eslint/no-anonymous-operations": "error",
+        "@graphql-eslint/no-duplicate-fields": "error",
+        "@graphql-eslint/naming-convention": [
+          "error",
+          {
+            OperationDefinition: {
+              style: "camelCase",
+              forbiddenPrefixes: ["Query", "Mutation", "Subscription", "Get"],
+              forbiddenSuffixes: ["Query", "Mutation", "Subscription"],
+            },
+          },
+        ],
+      },
+    },
+  ],
+};
--- a/.dev-js/package.json
+++ b/.dev-js/package.json
+{
+  "name": "aleksis-builddeps",
+  "version": "1.0.0",
+  "dependencies": {
+    "@graphql-eslint/eslint-plugin": "^4.3.0",
+    "@intlify/eslint-plugin-vue-i18n": "^3.0.0",
+    "eslint": "^8.26.0",
+    "eslint-config-prettier": "^9.0.0",
+    "eslint-plugin-vue": "^9.7.0",
+    "graphql": "^16.10.0",
+    "prettier": "^3.4.0",
+    "stylelint": "^15.0.0",
+    "stylelint-config-prettier": "^9.0.3",
+    "stylelint-config-standard": "^34.0.0"
+  }
+}
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
-<!-- AlekSIS is developed on EduGit. GitHub only serves as
-     backup mirror and to help people find the project. If
-	 possible, please submit your merge request on EduGit!
-	 
-	 EduGit accepts logins with GitHub accounts.
-->
-
-[ ] I have read the above and have no way to contribute on EduGit
-[ ] I understand that GitHub's terms of service exclude young and 
-    learning contributors, but still cannot contribute on EduGit
-    instead.
--- a/.gitignore
+++ b/.gitignore
 # Byte-compiled / optimized / DLL files
-__pycache__/
-*.py[cod]
 *$py.class
+*.py[cod]
+__pycache__/

 # Distribution / packaging
+*.egg
+*.egg-info/
 .Python
+.eggs/
+.installed.cfg
 build/
 develop-eggs/
 dist/
 downloads/
 eggs/
-.eggs/
 lib/
 lib64/
 parts/
 sdist/
 var/
 wheels/
-*.egg-info/
-.installed.cfg
-*.egg

 # Installer logs
-pip-log.txt
 pip-delete-this-directory.txt
+pip-log.txt

 # Translations
 *.mo
@@ -39,22 +39,60 @@ local_settings.py
 # Environments
 .env
 .venv
+ENV/
 env/
 venv/
-ENV/

 # Editors
 *~
 DEADJOE
 \#*#

+# IntelliJ
+.idea
+.idea/
+
+# VSCode
+.vscode/
+.history/
+*.code-workspace
+
 # Database
 db.sqlite3

 # Sphinx
 docs/_build/

-# Test
-.tox/
+# TeX
+*.aux
+
+# Generated files
+/cache
+/node_modules
+.dev-js/node_modules
+/static/
+/whoosh_index/
+.vite
+.dev-js/.yarn
+.dev-js/.pnp.cjs
+.dev-js/.pnp.loader.mjs
+.dev-js/.yarnrc.yml
+.dev-js/schema.json

+# Lock files
 poetry.lock
+package-lock.json
+yarn.lock
+.dev-js/yarn.lock
+
+# Tests
+.coverage
+.mypy_cache/
+.tox/
+htmlcov/
+
+# Data
+maintenance_mode_state.txt
+media/
+
+aleksis/core/static/style.css
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
 include:
-    - project: "AlekSIS/official/AlekSIS"
-      file: /ci/general.yml
-    - project: "AlekSIS/official/AlekSIS"
-      file: /ci/prepare/lock.yml
-#    - project: "AlekSIS/official/AlekSIS"
-#      file: /ci/test/test.yml
-    - project: "AlekSIS/official/AlekSIS"
-      file: /ci/test/lint.yml
-    - project: "AlekSIS/official/AlekSIS"
-      file: /ci/test/security.yml
-    - project: "AlekSIS/official/AlekSIS"
-      file: /ci/build/dist.yml
-    - project: "AlekSIS/official/AlekSIS"
-      file: /ci/build/docs.yml
-    - project: "AlekSIS/official/AlekSIS"
-      file: "/ci/deploy/trigger_dist.yml"
-    - project: "AlekSIS/official/AlekSIS"
-      file: /ci/publish/pypi.yml
-    - project: "AlekSIS/official/AlekSIS"
-      file: /ci/deploy/pages.yml
+  - project: "AlekSIS/official/AlekSIS"
+    file: /ci/general.yml
+  - project: "AlekSIS/official/AlekSIS"
+    file: /ci/prepare/lock.yml
+  #    - project: "AlekSIS/official/AlekSIS"
+  #      file: /ci/test/test.yml
+  - project: "AlekSIS/official/AlekSIS"
+    file: /ci/test/lint.yml
+  - project: "AlekSIS/official/AlekSIS"
+    file: /ci/test/security.yml
+  - project: "AlekSIS/official/AlekSIS"
+    file: /ci/build/dist.yml
+  - project: "AlekSIS/official/AlekSIS"
+    file: /ci/build/docs.yml
+  - project: "AlekSIS/official/AlekSIS"
+    file: "/ci/deploy/trigger_dist.yml"
+  - project: "AlekSIS/official/AlekSIS"
+    file: /ci/publish/pypi.yml
+  - project: "AlekSIS/official/AlekSIS"
+    file: /ci/deploy/pages.yml
--- a/.prettierignore
+++ b/.prettierignore
+# Byte-compiled / optimized / DLL files
+*$py.class
+*.py[cod]
+__pycache__/
+
+# Distribution / packaging
+*.egg
+*.egg-info/
+.Python
+.eggs/
+.installed.cfg
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+
+# Installer logs
+pip-delete-this-directory.txt
+pip-log.txt
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+
+# pyenv
+.python-version
+
+# Environments
+.env
+.venv
+ENV/
+env/
+venv/
+
+# Editors
+*~
+DEADJOE
+\#*#
+
+# IntelliJ
+.idea
+.idea/
+
+# Database
+db.sqlite3
+
+# Sphinx
+docs/_build/
+
+# TeX
+*.aux
+
+# Generated files
+/node_modules/
+/static/
+/whoosh_index/
+poetry.lock
+
+.coverage
+.mypy_cache/
+.tox/
+htmlcov/
+maintenance_mode_state.txt
+media/
+package-lock.json
+yarn.lock
+
+# VSCode
+.vscode/
+.history/
+*.code-workspace
+
+/cache
+
+# Add HTML files to avoid problems with unsupported Django templates
+*.html
+
+# Do not check/reformat generated files
+aleksis/core/util/licenses.json
+.vite/
+
+.pnp.cjs
+.pnp.loader.mjs
+
+.git/
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -9,11 +9,94 @@ and this project adheres to `Semantic Versioning`_.
 Unreleased
 ----------

+Breaking Changes
+~~~~~~~~~~~~~~~~
+
+The Untis importer was updated to work with Chronos 4.x. This now
+requires also to import data into AlekSIS-App-Cursus,
+AlekSIS-App-Kolego, and AlekSIS-App-Lesrooster. 
+ 
+Added
+~~~~~
+
+* Set group types for class and course groups during import.
+
+Removed
+~~~~~~~
+
+* Remove support for Untis exams.
+
+`3.0.1`_ - 2023-09-25
+---------------------
+
+Fixed
+~~~~~
+
+* Migrations failed in some cases due to programming mistake.
+
+`3.0`_ - 2023-05-15
+-------------------
+
+Nothing changed.
+
+`3.0b0`_ - 2023-02-27
+---------------------
+
+Removed
+~~~~~~~
+
+* Legacy menu integration for AlekSIS-Core pre-3.0
+
+Added
+~~~~~
+
+* Add SPA support for AlekSIS-Core 3.0
+
+Changed
+~~~~~~~
+
+* Use Room model from core
+
+Fixed
+~~~~~
+
+* Importer failed sometimes on progressing absences.
+* Exam import failed sometimes when data provided through Untis were incomplete.
+* Importer now automatically fixes intersections of terms with previous terms.
+
+Removed
+~~~~~~~
+
+* Remove unused data management menu entry.
+
+`2.3.2`_ - 2022-09-01
+---------------------
+
+Fixed
+~~~~~
+
+* Guessing school ID could fail in `aleksis-admin migrate` under some
+  version conditions
+
+`2.3.1`_ - 2022-08-13
+---------------------
+
+Fixed
+~~~~~
+
+* Import failed sometimes if there were lessons with names.
+* Import failed if there was a lesson without a teacher.
+* Course group matching didn't work correctly with teachers.
+
+`2.3`_ - 2022-06-25
+-------------------
+
 Added
 ~~~~~

 * Support for configuring the Untis school ID
 * Add Ukrainian locale (contributed by Sergiy Gorichenko from Fre(i)e Software GmbH).
+* Import exams from Untis.

 Fixed
 ~~~~~
@@ -208,14 +291,21 @@ Fixed
 .. _Keep a Changelog: https://keepachangelog.com/en/1.0.0/
 .. _Semantic Versioning: https://semver.org/spec/v2.0.0.html

-.. _1.0a1: https://edugit.org/Teckids/AlekSIS/AlekSIS-App-Untis/-/tags/1.0a1
-.. _2.0a2: https://edugit.org/Teckids/AlekSIS/AlekSIS-App-Untis/-/tags/2.0a2
-.. _2.0b0: https://edugit.org/Teckids/AlekSIS/AlekSIS-App-Untis/-/tags/2.0b0
-.. _2.0rc1: https://edugit.org/Teckids/AlekSIS/AlekSIS-App-Untis/-/tags/2.0rc1
-.. _2.0rc2: https://edugit.org/Teckids/AlekSIS/AlekSIS-App-Untis/-/tags/2.0rc2
-.. _2.0rc3: https://edugit.org/Teckids/AlekSIS/AlekSIS-App-Untis/-/tags/2.0rc3
-.. _2.0: https://edugit.org/Teckids/AlekSIS/AlekSIS-App-Untis/-/tags/2.0
-.. _2.1: https://edugit.org/Teckids/AlekSIS/AlekSIS-App-Untis/-/tags/2.1
-.. _2.1.1: https://edugit.org/Teckids/AlekSIS/AlekSIS-App-Untis/-/tags/2.1.1
-.. _2.1.2: https://edugit.org/Teckids/AlekSIS/AlekSIS-App-Untis/-/tags/2.1.2
-.. _2.1.3: https://edugit.org/Teckids/AlekSIS/AlekSIS-App-Untis/-/tags/2.1.3
+.. _1.0a1: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/1.0a1
+.. _2.0a2: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.0a2
+.. _2.0b0: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.0b0
+.. _2.0rc1: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.0rc1
+.. _2.0rc2: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.0rc2
+.. _2.0rc3: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.0rc3
+.. _2.0: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.0
+.. _2.1: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.1
+.. _2.1.1: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.1.1
+.. _2.1.2: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.1.2
+.. _2.1.3: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.1.3
+.. _2.2: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.2
+.. _2.3: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.3
+.. _2.3.1: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.3.1
+.. _2.3.2: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/2.3.2
+.. _3.0b0: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/3.0b0
+.. _3.0: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/3.0
+.. _3.0.1: https://edugit.org/AlekSIS/official/AlekSIS-App-Untis/-/tags/3.0.1
--- a/README.rst
+++ b/README.rst
@@ -14,6 +14,7 @@ Features
 * Import breaks
 * Import classes
 * Import events
+* Import exams
 * Import exported Untis database via MySQL import
 * Import exported Untis XML files
 * Import holidays
@@ -30,7 +31,7 @@ Licence

 ::

-  Copyright © 2018, 2019, 2020, 2021 Jonathan Weth <dev@jonathanweth.de>
+  Copyright © 2018, 2019, 2020, 2021, 2022 Jonathan Weth <dev@jonathanweth.de>
  Copyright © 2018, 2019 Frank Poetzsch-Heffter <p-h@katharineum.de>
  Copyright © 2019, 2020, 2021, 2022 Dominik George <dominik.george@teckids.org>
  Copyright © 2019, 2020 Tom Teichler <tom.teichler@teckids.org>

--- a/aleksis/apps/untis/apps.py
+++ b/aleksis/apps/untis/apps.py
@@ -10,7 +10,7 @@ class UntisConfig(AppConfig):
    }
    licence = "EUPL-1.2+"
    copyright_info = (
-        ([2018, 2019, 2020, 2021], "Jonathan Weth", "dev@jonathanweth.de"),
+        ([2018, 2019, 2020, 2021, 2022], "Jonathan Weth", "dev@jonathanweth.de"),
        ([2018, 2019], "Frank Poetzsch-Heffter", "p-h@katharineum.de"),
        ([2019, 2020, 2021, 2022], "Dominik George", "dominik.george@teckids.org"),
        ([2019, 2020], "Tom Teichler", "tom.teichler@teckids.org"),

--- a/aleksis/apps/untis/data_checks.py
+++ b/aleksis/apps/untis/data_checks.py
@@ -12,7 +12,7 @@ class CourseGroupNotFoundAndCreated(DataCheck):
        "The Untis import created a new course group because no matching group has been found."
    )

-    solve_options = {IgnoreSolveOption.name: IgnoreSolveOption}
+    solve_options = {IgnoreSolveOption._class_name: IgnoreSolveOption}

    @classmethod
    def run_check_data(cls):
@@ -29,7 +29,7 @@ class CourseGroupNotFoundAndNotCreated(DataCheck):
        "for a lesson because no matching group has been found."
    )

-    solve_options = {IgnoreSolveOption.name: IgnoreSolveOption}
+    solve_options = {IgnoreSolveOption._class_name: IgnoreSolveOption}

    @classmethod
    def run_check_data(cls):

--- a/aleksis/apps/untis/locale/ar/LC_MESSAGES/django.po
+++ b/aleksis/apps/untis/locale/ar/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-03-23 11:34+0100\n"
+"POT-Creation-Date: 2022-06-21 11:41+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -18,6 +18,22 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=6; plural=n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n%100>=3 && n%100<=10 ? 3 : n%100>=11 && n%100<=99 ? 4 : 5;\n"

+#: aleksis/apps/untis/data_checks.py:9
+msgid "Course groups created by the Untis import because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:12
+msgid "The Untis import created a new course group because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:25
+msgid "Course group not set by the Untis import because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:28
+msgid "The Untis import didn't set a course group for a lesson because no matching group has been found."
+msgstr ""
+
 #: aleksis/apps/untis/menus.py:6
 msgid "Link subjects to groups (for Untis MySQL import)"
 msgstr ""
@@ -30,9 +46,9 @@ msgstr ""
 #: aleksis/apps/untis/model_extensions.py:35
 #: aleksis/apps/untis/model_extensions.py:38
 #: aleksis/apps/untis/model_extensions.py:54
-#: aleksis/apps/untis/model_extensions.py:57
 #: aleksis/apps/untis/model_extensions.py:60
 #: aleksis/apps/untis/model_extensions.py:63
+#: aleksis/apps/untis/model_extensions.py:66
 msgid "Untis import reference"
 msgstr ""

@@ -57,13 +73,18 @@ msgstr ""
 msgid "Number of lesson element in Untis"
 msgstr ""

-#: aleksis/apps/untis/model_extensions.py:66
+#: aleksis/apps/untis/model_extensions.py:57
+msgid "Untis absence reference"
+msgstr ""
+
 #: aleksis/apps/untis/model_extensions.py:69
 #: aleksis/apps/untis/model_extensions.py:72
+#: aleksis/apps/untis/model_extensions.py:75
+#: aleksis/apps/untis/model_extensions.py:78
 msgid "UNTIS import reference"
 msgstr ""

-#: aleksis/apps/untis/models.py:4249
+#: aleksis/apps/untis/models.py:4253
 msgid "Can assign subjects to groups"
 msgstr ""

@@ -72,73 +93,93 @@ msgid "Untis: MySQL"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:16
-msgid "Update values of existing subjects"
+msgid "School ID in Untis database"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:24
-msgid "Update short name of existing persons"
+msgid "Update values of existing subjects"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:32
-msgid "Update name of existing persons"
+msgid "Update short name of existing persons"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:40
-msgid "Update short name of existing groups"
+msgid "Update name of existing persons"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:48
-msgid "Update name of existing groups"
+msgid "Update short name of existing groups"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:56
+msgid "Update name of existing groups"
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:64
 msgid "Disambiguate name of new groups"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:63
+#: aleksis/apps/untis/preferences.py:71
 msgid "Overwrite group owners"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:72
+#: aleksis/apps/untis/preferences.py:80
 msgid "Update name of existing rooms"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:80
+#: aleksis/apps/untis/preferences.py:88
 msgid "Update existing supervision areas"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:88
+#: aleksis/apps/untis/preferences.py:96
 msgid "Use course groups"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:90
-msgid "Build or search course groups for every course instead of setting classes as groups."
+#: aleksis/apps/untis/preferences.py:97
+msgid "Search course groups for every course instead of setting classes as groups."
 msgstr ""

-#: aleksis/apps/untis/preferences.py:99
+#: aleksis/apps/untis/preferences.py:105
+msgid "Create non-existing course groups"
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:106
+msgid "Only used if 'Use course groups' is enabled."
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:114
+msgid "Register a data problem if a course group has been not found."
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:122
 msgid "Match course groups by a subset of parent groups if no 100% match is found"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:100
+#: aleksis/apps/untis/preferences.py:123
 msgid "Works only if 'Use course groups' is activated."
 msgstr ""

-#: aleksis/apps/untis/preferences.py:108
+#: aleksis/apps/untis/preferences.py:131
 msgid "Ignore incomplete substitutions"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:43
-msgid "Import lesson {}"
+#: aleksis/apps/untis/util/mysql/importers/exams.py:123
+msgid "Exam"
 msgstr ""

 #: aleksis/apps/untis/util/mysql/importers/lessons.py:46
+msgid "Import lesson {}"
+msgstr ""
+
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:49
 msgid "  Skip because missing times"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:111
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:110
 msgid "    Skip because missing subject"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:314
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:331
 msgid "Deleted by Untis import"
 msgstr ""
--- a/aleksis/apps/untis/locale/de_DE/LC_MESSAGES/django.po
+++ b/aleksis/apps/untis/locale/de_DE/LC_MESSAGES/django.po
@@ -7,8 +7,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-03-23 11:34+0100\n"
-"PO-Revision-Date: 2022-04-29 14:23+0000\n"
+"POT-Creation-Date: 2022-06-21 11:41+0200\n"
+"PO-Revision-Date: 2022-08-03 16:40+0000\n"
 "Last-Translator: Jonathan Weth <teckids@jonathanweth.de>\n"
 "Language-Team: German <https://translate.edugit.org/projects/aleksis/"
 "aleksis-app-untis/de/>\n"
@@ -17,7 +17,31 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
-"X-Generator: Weblate 4.8\n"
+"X-Generator: Weblate 4.12.1\n"
+
+#: aleksis/apps/untis/data_checks.py:9
+msgid "Course groups created by the Untis import because no matching group has been found."
+msgstr ""
+"Durch Untis-Import erstellte Kursgruppen, weil keine passende Gruppe "
+"gefunden wurde."
+
+#: aleksis/apps/untis/data_checks.py:12
+msgid "The Untis import created a new course group because no matching group has been found."
+msgstr ""
+"Der Untis-Import hat eine neue Kursgruppe erstellt, weil keine passende "
+"Gruppe gefunden wurde."
+
+#: aleksis/apps/untis/data_checks.py:25
+msgid "Course group not set by the Untis import because no matching group has been found."
+msgstr ""
+"Kursgruppe nicht durch Untis-Import festgelegt, weil keine passende Gruppe "
+"gefunden wurde."
+
+#: aleksis/apps/untis/data_checks.py:28
+msgid "The Untis import didn't set a course group for a lesson because no matching group has been found."
+msgstr ""
+"Der Untis-Import hat keine Kursgruppe für eine Stunde festgelegt, weil keine "
+"passende Gruppe gefunden wurde."

 #: aleksis/apps/untis/menus.py:6
 msgid "Link subjects to groups (for Untis MySQL import)"
@@ -31,9 +55,9 @@ msgstr "Fächer mit Gruppen verknüpfen (für Untis-MySQL-Import)"
 #: aleksis/apps/untis/model_extensions.py:35
 #: aleksis/apps/untis/model_extensions.py:38
 #: aleksis/apps/untis/model_extensions.py:54
-#: aleksis/apps/untis/model_extensions.py:57
 #: aleksis/apps/untis/model_extensions.py:60
 #: aleksis/apps/untis/model_extensions.py:63
+#: aleksis/apps/untis/model_extensions.py:66
 msgid "Untis import reference"
 msgstr "Untis-Importreferenz"

@@ -58,13 +82,18 @@ msgstr "Unterrichtsnummer in Untis"
 msgid "Number of lesson element in Untis"
 msgstr "Nummer des Unterrichtselement in Untis"

-#: aleksis/apps/untis/model_extensions.py:66
+#: aleksis/apps/untis/model_extensions.py:57
+msgid "Untis absence reference"
+msgstr "Untis-Absenz-Referenz"
+
 #: aleksis/apps/untis/model_extensions.py:69
 #: aleksis/apps/untis/model_extensions.py:72
+#: aleksis/apps/untis/model_extensions.py:75
+#: aleksis/apps/untis/model_extensions.py:78
 msgid "UNTIS import reference"
 msgstr "Untis-Importreferenz"

-#: aleksis/apps/untis/models.py:4249
+#: aleksis/apps/untis/models.py:4253
 msgid "Can assign subjects to groups"
 msgstr "Kann Fächer zu Gruppen zuordnen"

@@ -73,76 +102,96 @@ msgid "Untis: MySQL"
 msgstr "Untis: MySQL"

 #: aleksis/apps/untis/preferences.py:16
+msgid "School ID in Untis database"
+msgstr "Schul-ID in der Untis-Datenbank"
+
+#: aleksis/apps/untis/preferences.py:24
 msgid "Update values of existing subjects"
 msgstr "Werte von bereits vorhanden Fächer aktualisieren"

-#: aleksis/apps/untis/preferences.py:24
+#: aleksis/apps/untis/preferences.py:32
 msgid "Update short name of existing persons"
 msgstr "Werte von bereits existierenden Person aktualisieren"

-#: aleksis/apps/untis/preferences.py:32
+#: aleksis/apps/untis/preferences.py:40
 msgid "Update name of existing persons"
 msgstr "Namen von bereits existierenden Person aktualisieren"

-#: aleksis/apps/untis/preferences.py:40
+#: aleksis/apps/untis/preferences.py:48
 msgid "Update short name of existing groups"
 msgstr "Kurznamen von existierenden Gruppen aktualisieren"

-#: aleksis/apps/untis/preferences.py:48
+#: aleksis/apps/untis/preferences.py:56
 msgid "Update name of existing groups"
 msgstr "Namen von existierenden Gruppen aktualisieren"

-#: aleksis/apps/untis/preferences.py:56
+#: aleksis/apps/untis/preferences.py:64
 msgid "Disambiguate name of new groups"
 msgstr "Namen von neuen Gruppen eindeutig machen"

-#: aleksis/apps/untis/preferences.py:63
+#: aleksis/apps/untis/preferences.py:71
 msgid "Overwrite group owners"
 msgstr "Gruppenbesitzer überschreiben"

-#: aleksis/apps/untis/preferences.py:72
+#: aleksis/apps/untis/preferences.py:80
 msgid "Update name of existing rooms"
 msgstr "Namen von existierenden Räumen aktualisieren"

-#: aleksis/apps/untis/preferences.py:80
+#: aleksis/apps/untis/preferences.py:88
 msgid "Update existing supervision areas"
 msgstr "Bereits existierende Aufsichtsgebiete aktualisieren"

-#: aleksis/apps/untis/preferences.py:88
+#: aleksis/apps/untis/preferences.py:96
 msgid "Use course groups"
 msgstr "Kursgruppen nutzen"

-#: aleksis/apps/untis/preferences.py:90
-msgid "Build or search course groups for every course instead of setting classes as groups."
-msgstr "Baut oder findet Kursgruppen für jeden Kurs anstatt die Klassengruppen zu setzen."
+#: aleksis/apps/untis/preferences.py:97
+msgid "Search course groups for every course instead of setting classes as groups."
+msgstr ""
+"Sucht Kursgruppen für jeden Kurs, anstatt Klassen als Gruppen zu setzen."

-#: aleksis/apps/untis/preferences.py:99
-msgid "Match course groups by a subset of parent groups if no 100% match is found"
+#: aleksis/apps/untis/preferences.py:105
+msgid "Create non-existing course groups"
+msgstr "Nicht existierende Kursgruppen erstellen"
+
+#: aleksis/apps/untis/preferences.py:106
+msgid "Only used if 'Use course groups' is enabled."
+msgstr "Wird nur benutzt, wenn 'Kursgruppen nutzen' aktiviert ist."
+
+#: aleksis/apps/untis/preferences.py:114
+msgid "Register a data problem if a course group has been not found."
 msgstr ""
-"Kursgruppen über eine Teilmenge von Elterngruppen zuordnen, wenn keine 100%-"
-"Zuordnung gefunden wurde"
+"Ein Datenproblem registrieren, wenn eine Kursgruppe nicht gefunden wurde."

-#: aleksis/apps/untis/preferences.py:100
+#: aleksis/apps/untis/preferences.py:122
+msgid "Match course groups by a subset of parent groups if no 100% match is found"
+msgstr "Kursgruppen über eine Teilmenge von Elterngruppen zuordnen, wenn keine 100%-Zuordnung gefunden wurde"
+
+#: aleksis/apps/untis/preferences.py:123
 msgid "Works only if 'Use course groups' is activated."
 msgstr "Funktioniert nur, wenn 'Kursgruppen benutzen' aktiviert ist."

-#: aleksis/apps/untis/preferences.py:108
+#: aleksis/apps/untis/preferences.py:131
 msgid "Ignore incomplete substitutions"
 msgstr "Unvollständige Vertretungen ignorieren"

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:43
+#: aleksis/apps/untis/util/mysql/importers/exams.py:123
+msgid "Exam"
+msgstr "Klausur"
+
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:46
 msgid "Import lesson {}"
 msgstr "Importiere Stunde {}"

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:46
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:49
 msgid "  Skip because missing times"
 msgstr "  Wird wegen fehlender Zeiten übersprungen"

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:111
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:110
 msgid "    Skip because missing subject"
 msgstr "    Wird wegen fehlendem Fach übersprungen"

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:314
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:331
 msgid "Deleted by Untis import"
 msgstr "Gelöscht durch Untis-Import"


--- a/aleksis/apps/untis/locale/fr/LC_MESSAGES/django.po
+++ b/aleksis/apps/untis/locale/fr/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-03-23 11:34+0100\n"
+"POT-Creation-Date: 2022-06-21 11:41+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -18,6 +18,22 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n > 1);\n"

+#: aleksis/apps/untis/data_checks.py:9
+msgid "Course groups created by the Untis import because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:12
+msgid "The Untis import created a new course group because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:25
+msgid "Course group not set by the Untis import because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:28
+msgid "The Untis import didn't set a course group for a lesson because no matching group has been found."
+msgstr ""
+
 #: aleksis/apps/untis/menus.py:6
 msgid "Link subjects to groups (for Untis MySQL import)"
 msgstr ""
@@ -30,9 +46,9 @@ msgstr ""
 #: aleksis/apps/untis/model_extensions.py:35
 #: aleksis/apps/untis/model_extensions.py:38
 #: aleksis/apps/untis/model_extensions.py:54
-#: aleksis/apps/untis/model_extensions.py:57
 #: aleksis/apps/untis/model_extensions.py:60
 #: aleksis/apps/untis/model_extensions.py:63
+#: aleksis/apps/untis/model_extensions.py:66
 msgid "Untis import reference"
 msgstr ""

@@ -57,13 +73,18 @@ msgstr ""
 msgid "Number of lesson element in Untis"
 msgstr ""

-#: aleksis/apps/untis/model_extensions.py:66
+#: aleksis/apps/untis/model_extensions.py:57
+msgid "Untis absence reference"
+msgstr ""
+
 #: aleksis/apps/untis/model_extensions.py:69
 #: aleksis/apps/untis/model_extensions.py:72
+#: aleksis/apps/untis/model_extensions.py:75
+#: aleksis/apps/untis/model_extensions.py:78
 msgid "UNTIS import reference"
 msgstr ""

-#: aleksis/apps/untis/models.py:4249
+#: aleksis/apps/untis/models.py:4253
 msgid "Can assign subjects to groups"
 msgstr ""

@@ -72,73 +93,93 @@ msgid "Untis: MySQL"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:16
-msgid "Update values of existing subjects"
+msgid "School ID in Untis database"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:24
-msgid "Update short name of existing persons"
+msgid "Update values of existing subjects"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:32
-msgid "Update name of existing persons"
+msgid "Update short name of existing persons"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:40
-msgid "Update short name of existing groups"
+msgid "Update name of existing persons"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:48
-msgid "Update name of existing groups"
+msgid "Update short name of existing groups"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:56
+msgid "Update name of existing groups"
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:64
 msgid "Disambiguate name of new groups"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:63
+#: aleksis/apps/untis/preferences.py:71
 msgid "Overwrite group owners"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:72
+#: aleksis/apps/untis/preferences.py:80
 msgid "Update name of existing rooms"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:80
+#: aleksis/apps/untis/preferences.py:88
 msgid "Update existing supervision areas"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:88
+#: aleksis/apps/untis/preferences.py:96
 msgid "Use course groups"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:90
-msgid "Build or search course groups for every course instead of setting classes as groups."
+#: aleksis/apps/untis/preferences.py:97
+msgid "Search course groups for every course instead of setting classes as groups."
 msgstr ""

-#: aleksis/apps/untis/preferences.py:99
+#: aleksis/apps/untis/preferences.py:105
+msgid "Create non-existing course groups"
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:106
+msgid "Only used if 'Use course groups' is enabled."
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:114
+msgid "Register a data problem if a course group has been not found."
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:122
 msgid "Match course groups by a subset of parent groups if no 100% match is found"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:100
+#: aleksis/apps/untis/preferences.py:123
 msgid "Works only if 'Use course groups' is activated."
 msgstr ""

-#: aleksis/apps/untis/preferences.py:108
+#: aleksis/apps/untis/preferences.py:131
 msgid "Ignore incomplete substitutions"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:43
-msgid "Import lesson {}"
+#: aleksis/apps/untis/util/mysql/importers/exams.py:123
+msgid "Exam"
 msgstr ""

 #: aleksis/apps/untis/util/mysql/importers/lessons.py:46
+msgid "Import lesson {}"
+msgstr ""
+
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:49
 msgid "  Skip because missing times"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:111
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:110
 msgid "    Skip because missing subject"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:314
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:331
 msgid "Deleted by Untis import"
 msgstr ""
--- a/aleksis/apps/untis/locale/la/LC_MESSAGES/django.po
+++ b/aleksis/apps/untis/locale/la/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-03-23 11:34+0100\n"
+"POT-Creation-Date: 2022-06-21 11:41+0200\n"
 "PO-Revision-Date: 2020-08-25 17:42+0000\n"
 "Last-Translator: Jonathan Weth <teckids@jonathanweth.de>\n"
 "Language-Team: Latin <https://translate.edugit.org/projects/aleksis/aleksis-app-untis/la/>\n"
@@ -18,6 +18,22 @@ msgstr ""
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
 "X-Generator: Weblate 4.1.1\n"

+#: aleksis/apps/untis/data_checks.py:9
+msgid "Course groups created by the Untis import because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:12
+msgid "The Untis import created a new course group because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:25
+msgid "Course group not set by the Untis import because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:28
+msgid "The Untis import didn't set a course group for a lesson because no matching group has been found."
+msgstr ""
+
 #: aleksis/apps/untis/menus.py:6
 msgid "Link subjects to groups (for Untis MySQL import)"
 msgstr ""
@@ -30,9 +46,9 @@ msgstr ""
 #: aleksis/apps/untis/model_extensions.py:35
 #: aleksis/apps/untis/model_extensions.py:38
 #: aleksis/apps/untis/model_extensions.py:54
-#: aleksis/apps/untis/model_extensions.py:57
 #: aleksis/apps/untis/model_extensions.py:60
 #: aleksis/apps/untis/model_extensions.py:63
+#: aleksis/apps/untis/model_extensions.py:66
 msgid "Untis import reference"
 msgstr ""

@@ -57,13 +73,18 @@ msgstr ""
 msgid "Number of lesson element in Untis"
 msgstr ""

-#: aleksis/apps/untis/model_extensions.py:66
+#: aleksis/apps/untis/model_extensions.py:57
+msgid "Untis absence reference"
+msgstr ""
+
 #: aleksis/apps/untis/model_extensions.py:69
 #: aleksis/apps/untis/model_extensions.py:72
+#: aleksis/apps/untis/model_extensions.py:75
+#: aleksis/apps/untis/model_extensions.py:78
 msgid "UNTIS import reference"
 msgstr ""

-#: aleksis/apps/untis/models.py:4249
+#: aleksis/apps/untis/models.py:4253
 msgid "Can assign subjects to groups"
 msgstr ""

@@ -72,74 +93,94 @@ msgid "Untis: MySQL"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:16
-msgid "Update values of existing subjects"
+msgid "School ID in Untis database"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:24
-msgid "Update short name of existing persons"
+msgid "Update values of existing subjects"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:32
-msgid "Update name of existing persons"
+msgid "Update short name of existing persons"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:40
-msgid "Update short name of existing groups"
+msgid "Update name of existing persons"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:48
-msgid "Update name of existing groups"
+msgid "Update short name of existing groups"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:56
+msgid "Update name of existing groups"
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:64
 msgid "Disambiguate name of new groups"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:63
+#: aleksis/apps/untis/preferences.py:71
 msgid "Overwrite group owners"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:72
+#: aleksis/apps/untis/preferences.py:80
 msgid "Update name of existing rooms"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:80
+#: aleksis/apps/untis/preferences.py:88
 msgid "Update existing supervision areas"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:88
+#: aleksis/apps/untis/preferences.py:96
 msgid "Use course groups"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:90
-msgid "Build or search course groups for every course instead of setting classes as groups."
+#: aleksis/apps/untis/preferences.py:97
+msgid "Search course groups for every course instead of setting classes as groups."
 msgstr ""

-#: aleksis/apps/untis/preferences.py:99
+#: aleksis/apps/untis/preferences.py:105
+msgid "Create non-existing course groups"
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:106
+msgid "Only used if 'Use course groups' is enabled."
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:114
+msgid "Register a data problem if a course group has been not found."
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:122
 msgid "Match course groups by a subset of parent groups if no 100% match is found"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:100
+#: aleksis/apps/untis/preferences.py:123
 msgid "Works only if 'Use course groups' is activated."
 msgstr ""

-#: aleksis/apps/untis/preferences.py:108
+#: aleksis/apps/untis/preferences.py:131
 msgid "Ignore incomplete substitutions"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:43
-msgid "Import lesson {}"
+#: aleksis/apps/untis/util/mysql/importers/exams.py:123
+msgid "Exam"
 msgstr ""

 #: aleksis/apps/untis/util/mysql/importers/lessons.py:46
+msgid "Import lesson {}"
+msgstr ""
+
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:49
 msgid "  Skip because missing times"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:111
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:110
 msgid "    Skip because missing subject"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:314
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:331
 msgid "Deleted by Untis import"
 msgstr ""


--- a/aleksis/apps/untis/locale/nb_NO/LC_MESSAGES/django.po
+++ b/aleksis/apps/untis/locale/nb_NO/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-03-23 11:34+0100\n"
+"POT-Creation-Date: 2022-06-21 11:41+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -17,6 +17,22 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"

+#: aleksis/apps/untis/data_checks.py:9
+msgid "Course groups created by the Untis import because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:12
+msgid "The Untis import created a new course group because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:25
+msgid "Course group not set by the Untis import because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:28
+msgid "The Untis import didn't set a course group for a lesson because no matching group has been found."
+msgstr ""
+
 #: aleksis/apps/untis/menus.py:6
 msgid "Link subjects to groups (for Untis MySQL import)"
 msgstr ""
@@ -29,9 +45,9 @@ msgstr ""
 #: aleksis/apps/untis/model_extensions.py:35
 #: aleksis/apps/untis/model_extensions.py:38
 #: aleksis/apps/untis/model_extensions.py:54
-#: aleksis/apps/untis/model_extensions.py:57
 #: aleksis/apps/untis/model_extensions.py:60
 #: aleksis/apps/untis/model_extensions.py:63
+#: aleksis/apps/untis/model_extensions.py:66
 msgid "Untis import reference"
 msgstr ""

@@ -56,13 +72,18 @@ msgstr ""
 msgid "Number of lesson element in Untis"
 msgstr ""

-#: aleksis/apps/untis/model_extensions.py:66
+#: aleksis/apps/untis/model_extensions.py:57
+msgid "Untis absence reference"
+msgstr ""
+
 #: aleksis/apps/untis/model_extensions.py:69
 #: aleksis/apps/untis/model_extensions.py:72
+#: aleksis/apps/untis/model_extensions.py:75
+#: aleksis/apps/untis/model_extensions.py:78
 msgid "UNTIS import reference"
 msgstr ""

-#: aleksis/apps/untis/models.py:4249
+#: aleksis/apps/untis/models.py:4253
 msgid "Can assign subjects to groups"
 msgstr ""

@@ -71,73 +92,93 @@ msgid "Untis: MySQL"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:16
-msgid "Update values of existing subjects"
+msgid "School ID in Untis database"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:24
-msgid "Update short name of existing persons"
+msgid "Update values of existing subjects"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:32
-msgid "Update name of existing persons"
+msgid "Update short name of existing persons"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:40
-msgid "Update short name of existing groups"
+msgid "Update name of existing persons"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:48
-msgid "Update name of existing groups"
+msgid "Update short name of existing groups"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:56
+msgid "Update name of existing groups"
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:64
 msgid "Disambiguate name of new groups"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:63
+#: aleksis/apps/untis/preferences.py:71
 msgid "Overwrite group owners"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:72
+#: aleksis/apps/untis/preferences.py:80
 msgid "Update name of existing rooms"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:80
+#: aleksis/apps/untis/preferences.py:88
 msgid "Update existing supervision areas"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:88
+#: aleksis/apps/untis/preferences.py:96
 msgid "Use course groups"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:90
-msgid "Build or search course groups for every course instead of setting classes as groups."
+#: aleksis/apps/untis/preferences.py:97
+msgid "Search course groups for every course instead of setting classes as groups."
 msgstr ""

-#: aleksis/apps/untis/preferences.py:99
+#: aleksis/apps/untis/preferences.py:105
+msgid "Create non-existing course groups"
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:106
+msgid "Only used if 'Use course groups' is enabled."
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:114
+msgid "Register a data problem if a course group has been not found."
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:122
 msgid "Match course groups by a subset of parent groups if no 100% match is found"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:100
+#: aleksis/apps/untis/preferences.py:123
 msgid "Works only if 'Use course groups' is activated."
 msgstr ""

-#: aleksis/apps/untis/preferences.py:108
+#: aleksis/apps/untis/preferences.py:131
 msgid "Ignore incomplete substitutions"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:43
-msgid "Import lesson {}"
+#: aleksis/apps/untis/util/mysql/importers/exams.py:123
+msgid "Exam"
 msgstr ""

 #: aleksis/apps/untis/util/mysql/importers/lessons.py:46
+msgid "Import lesson {}"
+msgstr ""
+
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:49
 msgid "  Skip because missing times"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:111
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:110
 msgid "    Skip because missing subject"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:314
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:331
 msgid "Deleted by Untis import"
 msgstr ""
--- a/aleksis/apps/untis/locale/ru/LC_MESSAGES/django.po
+++ b/aleksis/apps/untis/locale/ru/LC_MESSAGES/django.po
@@ -3,41 +3,59 @@
 # This file is distributed under the same license as the PACKAGE package.
 # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
 #
-#, fuzzy
 msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-04-23 12:56+0000\n"
-"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
-"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
-"Language-Team: LANGUAGE <LL@li.org>\n"
-"Language: \n"
+"POT-Creation-Date: 2022-06-21 11:41+0200\n"
+"PO-Revision-Date: 2022-07-03 06:13+0000\n"
+"Last-Translator: Serhii Horichenko <m@sgg.im>\n"
+"Language-Team: Russian <https://translate.edugit.org/projects/aleksis/"
+"aleksis-app-untis/ru/>\n"
+"Language: ru\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=4; plural=(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n"
 "%10<=4 && (n%100<12 || n%100>14) ? 1 : n%10==0 || (n%10>=5 && n%10<=9) || (n"
 "%100>=11 && n%100<=14)? 2 : 3);\n"
+"X-Generator: Weblate 4.12.1\n"
+
 #: aleksis/apps/untis/data_checks.py:9
-msgid "Course groups created by the Untis import because no matching group has been found."
+msgid ""
+"Course groups created by the Untis import because no matching group has been "
+"found."
 msgstr ""
+"Группы курсов созданы через импорт Untis, т.к. не найдена соответствующая "
+"группа."

 #: aleksis/apps/untis/data_checks.py:12
-msgid "The Untis import created a new course group because no matching group has been found."
+msgid ""
+"The Untis import created a new course group because no matching group has "
+"been found."
 msgstr ""
+"Импорт Untis создал новую группу курсов, т.к. не найдена соответствующая "
+"группа."

 #: aleksis/apps/untis/data_checks.py:25
-msgid "Course group not set by the Untis import because no matching group has been found."
+msgid ""
+"Course group not set by the Untis import because no matching group has been "
+"found."
 msgstr ""
+"Группа курсов не установлена импортом Untis, т.к. не найдена соответствующая "
+"группа."

 #: aleksis/apps/untis/data_checks.py:28
-msgid "The Untis import didn't set a course group for a lesson because no matching group has been found."
+msgid ""
+"The Untis import didn't set a course group for a lesson because no matching "
+"group has been found."
 msgstr ""
+"Импорт Untis не установил группу курсов для урока, т.к. не найдена "
+"соответствующая группа."

 #: aleksis/apps/untis/menus.py:6
 msgid "Link subjects to groups (for Untis MySQL import)"
-msgstr ""
+msgstr "Связать предметы с группами (для импорта Untis MySQL)"

 #: aleksis/apps/untis/model_extensions.py:9
 #: aleksis/apps/untis/model_extensions.py:12
@@ -51,127 +69,139 @@ msgstr ""
 #: aleksis/apps/untis/model_extensions.py:60
 #: aleksis/apps/untis/model_extensions.py:63
 msgid "Untis import reference"
-msgstr ""
+msgstr "Ссылка на Untis-импорт"

 #: aleksis/apps/untis/model_extensions.py:23
 msgid "Untis school year ID"
-msgstr ""
+msgstr "ID учебного года в Untis"

 #: aleksis/apps/untis/model_extensions.py:26
 msgid "Untis school id"
-msgstr ""
+msgstr "ID школы в Untis"

 #: aleksis/apps/untis/model_extensions.py:29
 msgid "Untis version id"
-msgstr ""
+msgstr "ID версии Untis"

 #: aleksis/apps/untis/model_extensions.py:41
 msgid "Lesson id in Untis"
-msgstr ""
+msgstr "ID урока в Untis"

 #: aleksis/apps/untis/model_extensions.py:45
 #: aleksis/apps/untis/model_extensions.py:50
 msgid "Number of lesson element in Untis"
-msgstr ""
+msgstr "Количество элементов уроков в Untis"
+
+#: aleksis/apps/untis/model_extensions.py:57
+msgid "Untis absence reference"
+msgstr "Ссылка на Untis-импорт"

 #: aleksis/apps/untis/model_extensions.py:66
 #: aleksis/apps/untis/model_extensions.py:69
 #: aleksis/apps/untis/model_extensions.py:72
 msgid "UNTIS import reference"
-msgstr ""
+msgstr "Ссылка импорта Untis"

 #: aleksis/apps/untis/models.py:4253
 msgid "Can assign subjects to groups"
-msgstr ""
+msgstr "Может назначать предметы группам"

 #: aleksis/apps/untis/preferences.py:8
 msgid "Untis: MySQL"
-msgstr ""
+msgstr "Untis: MySQL"

 #: aleksis/apps/untis/preferences.py:16
 msgid "School ID in Untis database"
-msgstr ""
+msgstr "ID школы в базе данных Untis"

 #: aleksis/apps/untis/preferences.py:24
 msgid "Update values of existing subjects"
-msgstr ""
+msgstr "Обновить значения существующих предметов"

 #: aleksis/apps/untis/preferences.py:32
 msgid "Update short name of existing persons"
-msgstr ""
+msgstr "Обновить короткие имена существущих лиц"

 #: aleksis/apps/untis/preferences.py:40
 msgid "Update name of existing persons"
-msgstr ""
+msgstr "Обновить имена существующих лиц"

 #: aleksis/apps/untis/preferences.py:48
 msgid "Update short name of existing groups"
-msgstr ""
+msgstr "Обновить короткие имена существующих груп"

 #: aleksis/apps/untis/preferences.py:56
 msgid "Update name of existing groups"
-msgstr ""
+msgstr "Обновить имена имеющихся групп"

 #: aleksis/apps/untis/preferences.py:64
 msgid "Disambiguate name of new groups"
-msgstr ""
+msgstr "Уникальные имена для новых групп"

 #: aleksis/apps/untis/preferences.py:71
 msgid "Overwrite group owners"
-msgstr ""
+msgstr "Переписать владельцев групп"

 #: aleksis/apps/untis/preferences.py:80
 msgid "Update name of existing rooms"
-msgstr ""
+msgstr "Обновить названия существующих комнат"

 #: aleksis/apps/untis/preferences.py:88
 msgid "Update existing supervision areas"
-msgstr ""
+msgstr "Обновить существующие зоны контроля"

 #: aleksis/apps/untis/preferences.py:96
 msgid "Use course groups"
-msgstr ""
+msgstr "Использовать группы курса"

 #: aleksis/apps/untis/preferences.py:97
-msgid "Search course groups for every course instead of setting classes as groups."
+msgid ""
+"Search course groups for every course instead of setting classes as groups."
 msgstr ""
+"Искать группы курса для каждого курса вместо установки классов в качестве "
+"групп."

 #: aleksis/apps/untis/preferences.py:105
 msgid "Create non-existing course groups"
-msgstr ""
+msgstr "Создать отсутствующие группы курсов"

 #: aleksis/apps/untis/preferences.py:106
 msgid "Only used if 'Use course groups' is enabled."
-msgstr ""
+msgstr "Используется только при активном \"Использовании группы курса\"."

 #: aleksis/apps/untis/preferences.py:114
 msgid "Register a data problem if a course group has been not found."
-msgstr ""
+msgstr "Записать данные о проблеме если не найдена группа курса."

 #: aleksis/apps/untis/preferences.py:122
-msgid "Match course groups by a subset of parent groups if no 100% match is found"
-msgstr ""
+msgid ""
+"Match course groups by a subset of parent groups if no 100% match is found"
+msgstr "Если нет 100% совпадения подставлять группы курсов из родительских"

 #: aleksis/apps/untis/preferences.py:123
 msgid "Works only if 'Use course groups' is activated."
-msgstr ""
+msgstr "Работает только при активном \"Использовании группы курса\"."

 #: aleksis/apps/untis/preferences.py:131
 msgid "Ignore incomplete substitutions"
-msgstr ""
+msgstr "Игнорировать неполные замены"
+
+#: aleksis/apps/untis/util/mysql/importers/exams.py:123
+msgid "Exam"
+msgstr "Экзамен"

 #: aleksis/apps/untis/util/mysql/importers/lessons.py:44
 msgid "Import lesson {}"
-msgstr ""
+msgstr "Импортировать урок {}"

 #: aleksis/apps/untis/util/mysql/importers/lessons.py:47
 msgid "  Skip because missing times"
-msgstr ""
+msgstr "  Пропустить т.к. мало времени"

 #: aleksis/apps/untis/util/mysql/importers/lessons.py:112
 msgid "    Skip because missing subject"
-msgstr ""
+msgstr "    Пропустить т.к. отсутствует предмет"

 #: aleksis/apps/untis/util/mysql/importers/lessons.py:333
 msgid "Deleted by Untis import"
-msgstr ""
+msgstr "Удалено импортом Untis"
--- a/aleksis/apps/untis/locale/tr_TR/LC_MESSAGES/django.po
+++ b/aleksis/apps/untis/locale/tr_TR/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-03-23 11:34+0100\n"
+"POT-Creation-Date: 2022-06-21 11:41+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -17,6 +17,22 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"

+#: aleksis/apps/untis/data_checks.py:9
+msgid "Course groups created by the Untis import because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:12
+msgid "The Untis import created a new course group because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:25
+msgid "Course group not set by the Untis import because no matching group has been found."
+msgstr ""
+
+#: aleksis/apps/untis/data_checks.py:28
+msgid "The Untis import didn't set a course group for a lesson because no matching group has been found."
+msgstr ""
+
 #: aleksis/apps/untis/menus.py:6
 msgid "Link subjects to groups (for Untis MySQL import)"
 msgstr ""
@@ -29,9 +45,9 @@ msgstr ""
 #: aleksis/apps/untis/model_extensions.py:35
 #: aleksis/apps/untis/model_extensions.py:38
 #: aleksis/apps/untis/model_extensions.py:54
-#: aleksis/apps/untis/model_extensions.py:57
 #: aleksis/apps/untis/model_extensions.py:60
 #: aleksis/apps/untis/model_extensions.py:63
+#: aleksis/apps/untis/model_extensions.py:66
 msgid "Untis import reference"
 msgstr ""

@@ -56,13 +72,18 @@ msgstr ""
 msgid "Number of lesson element in Untis"
 msgstr ""

-#: aleksis/apps/untis/model_extensions.py:66
+#: aleksis/apps/untis/model_extensions.py:57
+msgid "Untis absence reference"
+msgstr ""
+
 #: aleksis/apps/untis/model_extensions.py:69
 #: aleksis/apps/untis/model_extensions.py:72
+#: aleksis/apps/untis/model_extensions.py:75
+#: aleksis/apps/untis/model_extensions.py:78
 msgid "UNTIS import reference"
 msgstr ""

-#: aleksis/apps/untis/models.py:4249
+#: aleksis/apps/untis/models.py:4253
 msgid "Can assign subjects to groups"
 msgstr ""

@@ -71,73 +92,93 @@ msgid "Untis: MySQL"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:16
-msgid "Update values of existing subjects"
+msgid "School ID in Untis database"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:24
-msgid "Update short name of existing persons"
+msgid "Update values of existing subjects"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:32
-msgid "Update name of existing persons"
+msgid "Update short name of existing persons"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:40
-msgid "Update short name of existing groups"
+msgid "Update name of existing persons"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:48
-msgid "Update name of existing groups"
+msgid "Update short name of existing groups"
 msgstr ""

 #: aleksis/apps/untis/preferences.py:56
+msgid "Update name of existing groups"
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:64
 msgid "Disambiguate name of new groups"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:63
+#: aleksis/apps/untis/preferences.py:71
 msgid "Overwrite group owners"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:72
+#: aleksis/apps/untis/preferences.py:80
 msgid "Update name of existing rooms"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:80
+#: aleksis/apps/untis/preferences.py:88
 msgid "Update existing supervision areas"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:88
+#: aleksis/apps/untis/preferences.py:96
 msgid "Use course groups"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:90
-msgid "Build or search course groups for every course instead of setting classes as groups."
+#: aleksis/apps/untis/preferences.py:97
+msgid "Search course groups for every course instead of setting classes as groups."
 msgstr ""

-#: aleksis/apps/untis/preferences.py:99
+#: aleksis/apps/untis/preferences.py:105
+msgid "Create non-existing course groups"
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:106
+msgid "Only used if 'Use course groups' is enabled."
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:114
+msgid "Register a data problem if a course group has been not found."
+msgstr ""
+
+#: aleksis/apps/untis/preferences.py:122
 msgid "Match course groups by a subset of parent groups if no 100% match is found"
 msgstr ""

-#: aleksis/apps/untis/preferences.py:100
+#: aleksis/apps/untis/preferences.py:123
 msgid "Works only if 'Use course groups' is activated."
 msgstr ""

-#: aleksis/apps/untis/preferences.py:108
+#: aleksis/apps/untis/preferences.py:131
 msgid "Ignore incomplete substitutions"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:43
-msgid "Import lesson {}"
+#: aleksis/apps/untis/util/mysql/importers/exams.py:123
+msgid "Exam"
 msgstr ""

 #: aleksis/apps/untis/util/mysql/importers/lessons.py:46
+msgid "Import lesson {}"
+msgstr ""
+
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:49
 msgid "  Skip because missing times"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:111
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:110
 msgid "    Skip because missing subject"
 msgstr ""

-#: aleksis/apps/untis/util/mysql/importers/lessons.py:314
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:331
 msgid "Deleted by Untis import"
 msgstr ""
--- a/aleksis/apps/untis/locale/uk/LC_MESSAGES/django.po
+++ b/aleksis/apps/untis/locale/uk/LC_MESSAGES/django.po
@@ -7,8 +7,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-04-23 12:56+0000\n"
-"PO-Revision-Date: 2022-04-29 14:23+0000\n"
+"POT-Creation-Date: 2022-06-21 11:41+0200\n"
+"PO-Revision-Date: 2022-07-03 06:13+0000\n"
 "Last-Translator: Serhii Horichenko <m@sgg.im>\n"
 "Language-Team: Ukrainian <https://translate.edugit.org/projects/aleksis/"
 "aleksis-app-untis/uk/>\n"
@@ -20,34 +20,42 @@ msgstr ""
 "? 0 : n % 1 == 0 && n % 10 >= 2 && n % 10 <= 4 && (n % 100 < 12 || n % 100 > "
 "14) ? 1 : n % 1 == 0 && (n % 10 ==0 || (n % 10 >=5 && n % 10 <=9) || (n % "
 "100 >=11 && n % 100 <=14 )) ? 2: 3);\n"
-"X-Generator: Weblate 4.8\n"
+"X-Generator: Weblate 4.12.1\n"

 #: aleksis/apps/untis/data_checks.py:9
-msgid "Course groups created by the Untis import because no matching group has been found."
+msgid ""
+"Course groups created by the Untis import because no matching group has been "
+"found."
 msgstr ""
 "Групи курсів створені імпортом Untis, оскільки не знайдено відповідної групи."

 #: aleksis/apps/untis/data_checks.py:12
-msgid "The Untis import created a new course group because no matching group has been found."
+msgid ""
+"The Untis import created a new course group because no matching group has "
+"been found."
 msgstr ""
 "Імпорт Untis створив нову групу курсів, оскільки не знайдено відповідної "
 "групи."

 #: aleksis/apps/untis/data_checks.py:25
-msgid "Course group not set by the Untis import because no matching group has been found."
+msgid ""
+"Course group not set by the Untis import because no matching group has been "
+"found."
 msgstr ""
 "Група курсів не встановлена імпортуванням Untis, оскільки не знайдено "
 "відповідної групи."

 #: aleksis/apps/untis/data_checks.py:28
-msgid "The Untis import didn't set a course group for a lesson because no matching group has been found."
+msgid ""
+"The Untis import didn't set a course group for a lesson because no matching "
+"group has been found."
 msgstr ""
 "Імпорт Untis не встановив групу курсів для уроку, оскільки не було знайдено "
 "відповідної групи."

 #: aleksis/apps/untis/menus.py:6
 msgid "Link subjects to groups (for Untis MySQL import)"
-msgstr "Зв'язати теми з групами (для імпорту Untis MySQL)"
+msgstr "Зв'язати предмети з групами (для імпорту Untis MySQL)"

 #: aleksis/apps/untis/model_extensions.py:9
 #: aleksis/apps/untis/model_extensions.py:12
@@ -57,19 +65,20 @@ msgstr "Зв'язати теми з групами (для імпорту Untis
 #: aleksis/apps/untis/model_extensions.py:35
 #: aleksis/apps/untis/model_extensions.py:38
 #: aleksis/apps/untis/model_extensions.py:54
-#: aleksis/apps/untis/model_extensions.py:57
 #: aleksis/apps/untis/model_extensions.py:60
 #: aleksis/apps/untis/model_extensions.py:63
+#: aleksis/apps/untis/model_extensions.py:66
+#: aleksis/apps/untis/model_extensions.py:57
 msgid "Untis import reference"
 msgstr "Посилання на Untis-імпорт"

 #: aleksis/apps/untis/model_extensions.py:23
 msgid "Untis school year ID"
-msgstr "ID навчального року Untis"
+msgstr "ID навчального року в Untis"

 #: aleksis/apps/untis/model_extensions.py:26
 msgid "Untis school id"
-msgstr "ID школи Untis"
+msgstr "ID школи в Untis"

 #: aleksis/apps/untis/model_extensions.py:29
 msgid "Untis version id"
@@ -84,9 +93,15 @@ msgstr "ID уроку в Untis"
 msgid "Number of lesson element in Untis"
 msgstr "Кількість елементів уроків в Untis"

-#: aleksis/apps/untis/model_extensions.py:66
+#: aleksis/apps/untis/model_extensions.py:57
+msgid "Untis absence reference"
+msgstr "Посилання на Untis-імпорт"
+
 #: aleksis/apps/untis/model_extensions.py:69
 #: aleksis/apps/untis/model_extensions.py:72
+#: aleksis/apps/untis/model_extensions.py:75
+#: aleksis/apps/untis/model_extensions.py:78
+#: aleksis/apps/untis/model_extensions.py:66
 msgid "UNTIS import reference"
 msgstr "Посилання імпорту Untis"

@@ -143,7 +158,8 @@ msgid "Use course groups"
 msgstr "Використовувати групи курсу"

 #: aleksis/apps/untis/preferences.py:97
-msgid "Search course groups for every course instead of setting classes as groups."
+msgid ""
+"Search course groups for every course instead of setting classes as groups."
 msgstr "Шукати групи курсу для кожного курсу замість установки класів як груп."

 #: aleksis/apps/untis/preferences.py:105
@@ -159,7 +175,8 @@ msgid "Register a data problem if a course group has been not found."
 msgstr "Записати дані щодо проблеми якщо група курсу не знайдена."

 #: aleksis/apps/untis/preferences.py:122
-msgid "Match course groups by a subset of parent groups if no 100% match is found"
+msgid ""
+"Match course groups by a subset of parent groups if no 100% match is found"
 msgstr ""
 "Співставляти групи курсів за батьківськими групами якщо не знайдена 100% "
 "відповідність"
@@ -172,18 +189,26 @@ msgstr "Працює лише якщо активне \"Використовув
 msgid "Ignore incomplete substitutions"
 msgstr "Ігнорувати неповні заміни"

+#: aleksis/apps/untis/util/mysql/importers/exams.py:123
+msgid "Exam"
+msgstr "Іспит"
+
+#: aleksis/apps/untis/util/mysql/importers/lessons.py:46
 #: aleksis/apps/untis/util/mysql/importers/lessons.py:44
 msgid "Import lesson {}"
 msgstr "Імпортувати урок {}"

+#: aleksis/apps/untis/util/mysql/importers/lessons.py:49
 #: aleksis/apps/untis/util/mysql/importers/lessons.py:47
 msgid "  Skip because missing times"
 msgstr "  Пропустити через брак часу"

+#: aleksis/apps/untis/util/mysql/importers/lessons.py:110
 #: aleksis/apps/untis/util/mysql/importers/lessons.py:112
 msgid "    Skip because missing subject"
 msgstr "    Пропустити через відсутність предмету"

+#: aleksis/apps/untis/util/mysql/importers/lessons.py:331
 #: aleksis/apps/untis/util/mysql/importers/lessons.py:333
 msgid "Deleted by Untis import"
 msgstr "Видалене імпортом Untis"
--- a/aleksis/apps/untis/management/commands/move_dates_for_testing.py
+++ b/aleksis/apps/untis/management/commands/move_dates_for_testing.py
-from datetime import date, timedelta
-
-from django.core.management.base import BaseCommand
-from django.utils import timezone
-
-from calendarweek import CalendarWeek
-from tqdm import tqdm
-
-from aleksis.apps.chronos.models import (
-    Absence,
-    Event,
-    Exam,
-    ExtraLesson,
-    Holiday,
-    LessonSubstitution,
-    ValidityRange,
-)
-from aleksis.core.models import SchoolTerm
-
-
-class Command(BaseCommand):
-    help = "Move all dates to current school year"  # noqa
-
-    def add_arguments(self, parser):
-        parser.add_argument("--dry", action="store_true")
-
-    def translate_date_start_end(self, name: str, qs):
-        self.stdout.write(name.upper())
-        for instance in tqdm(qs):
-            date_start = instance.date_start
-            date_end = instance.date_end
-            date_start_new = date_start + self.time_delta
-            date_end_new = date_end + self.time_delta
-            self.stdout.write(f"{date_start} → {date_start_new}; {date_end} → {date_end_new}")
-            instance.date_start = date_start_new
-            instance.date_end = date_end_new
-            if not self.dry:
-                instance.save()
-
-    def translate_date(self, name: str, qs):
-        self.stdout.write(name.upper())
-        for instance in tqdm(qs):
-            date_old = instance.date
-            date_new = date_old + self.time_delta
-            self.stdout.write(f"{date_old} → {date_new}")
-            instance.date = date_new
-            if not self.dry:
-                instance.save()
-
-    def translate_week_year(self, name: str, qs):
-        self.stdout.write(name.upper())
-        for instance in tqdm(qs):
-            date_old = instance.date
-            date_new = instance.date + self.time_delta
-            week_new = CalendarWeek.from_date(date_new)
-            self.stdout.write(f"{date_old}, {instance.week} → {date_new}, {week_new.week}")
-            instance.year = date_new.year
-            instance.week = week_new.week
-            if not self.dry:
-                instance.save()
-
-    def handle(self, *args, **options):
-        self.dry = options["dry"]
-
-        school_terms = SchoolTerm.objects.order_by("-date_end")
-
-        if not school_terms.exists():
-            raise RuntimeError("No school term available.")
-
-        school_term = school_terms.first()
-        self.stdout.write(f"Used school term: {school_term}")
-
-        date_start = school_term.date_start
-        date_end = school_term.date_end
-        current_date = timezone.now().date()
-        current_year = current_date.year
-        if date_start.month <= current_date.month and date_start.day < current_date.day:
-            current_year -= 1
-        date_end = date(year=current_year, day=date_start.day, month=date_start.month)
-        self.stdout.write(f"{current_year}, {date_end}")
-        days = (date_end - date_start).days
-        self.weeks = round(days / 7)
-        self.time_delta = timedelta(days=self.weeks * 7)
-        self.stdout.write(f"{days}, {self.weeks}")
-
-        self.translate_date_start_end("SCHOOL TERM", [school_term])
-
-        self.translate_date_start_end(
-            "VALIDITY RANGES", ValidityRange.objects.filter(school_term=school_term)
-        )
-
-        if not self.weeks:
-            self.stdout.write(self.style.ERROR("There are no data that have to be moved."))
-            return
-
-        self.translate_week_year(
-            "SUBSTITUTIONS",
-            LessonSubstitution.objects.filter(
-                lesson_period__lesson__validity__school_term=school_term
-            ),
-        )
-        self.translate_week_year(
-            "EXTRA LESSONS", ExtraLesson.objects.filter(school_term=school_term)
-        )
-        self.translate_date_start_end("ABSENCES", Absence.objects.filter(school_term=school_term))
-        self.translate_date("EXAMS", Exam.objects.filter(school_term=school_term))
-        self.translate_date_start_end(
-            "HOLIDAYS", Holiday.objects.within_dates(date_start, date_end)
-        )
-        self.translate_date_start_end("EVENTS", Event.objects.filter(school_term=school_term))
--- a/aleksis/apps/untis/management/commands/untis_import_mysql.py
+++ b/aleksis/apps/untis/management/commands/untis_import_mysql.py
@@ -25,6 +25,6 @@ class Command(BaseCommand):
    def handle(self, *args, **options):
        command = COMMANDS_BY_NAME[options["command"]]
        background = options["background"]
-        school_id = options.get("school_id", None)
-        version = options.get("plan_version", None)
-        command.run(background=background, version=version)
+        school_id = options.get("school_id")
+        version = options.get("plan_version")
+        command.run(background=background, school_id=school_id, version=version)
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