Merge branch '45-take-teachers-into-account-when-matching-course-groups' into 'master'

Resolve "Take teachers into account when matching course groups"

Closes #45

See merge request !128

CHANGELOG.rst

@@ -15,6 +15,12 @@ Changed
 * Let untis_import_mysql management command default to ``current`` instead of all
   to prevent accidental imports of old plans
 
+Fixed
+~~~~~
+
+* Search course groups not only by parent groups and subject, but also take
+  the teachers (group owners) into account
+
 `2.1.3`_ - 2022-02-06
 ---------------------
 

aleksis/apps/untis/util/mysql/importers/lessons.py

@@ -124,20 +124,24 @@ def import_lessons(
                 # Negative import_ref denotes a course group
                 group_import_ref = -int("{}{}".format(lesson_id, i))
 
-                # Search by parent groups and subject
+                # Search by parent groups, teachers/owners and subject
                 qs = core_models.Group.objects.filter(
                     parent_groups__in=[c.id for c in course_classes],
                     subject_id=subject.id,
+                    owners__in=[t.id for t in teachers],
                 ).filter(Q(school_term__isnull=True) | Q(school_term=validity_range.school_term))
 
                 # Check if found groups match
                 match = False
                 for found_group in qs:
-                    if compare_m2m(course_classes, found_group.parent_groups.all()):
+                    if compare_m2m(course_classes, found_group.parent_groups.all()) and compare_m2m(
+                        teachers, found_group.owners.all()
+                    ):
                         match = True
                         course_group = found_group
                         logger.info(
-                            "    Course group found by searching by parent groups and subject"
+                            "    Course group found by searching by parent groups, "
+                            "teachers (owners) and subject"
                         )
 
                 changed = False