From 561d370cef00d35e0ee86e2beea907799a902cdc Mon Sep 17 00:00:00 2001
From: Dominik George <nik@naturalnet.de>
Date: Wed, 4 Sep 2019 15:22:56 +0200
Subject: [PATCH] Add db indexes. Advances BiscuIT-ng#55.
---
.../chronos/migrations/0002_db_indexes.py | 30 +++++++++++++++++++
biscuit/apps/chronos/models.py | 4 +++
2 files changed, 34 insertions(+)
create mode 100644 biscuit/apps/chronos/migrations/0002_db_indexes.py
diff --git a/biscuit/apps/chronos/migrations/0002_db_indexes.py b/biscuit/apps/chronos/migrations/0002_db_indexes.py
new file mode 100644
index 00000000..49be25b9
--- /dev/null
+++ b/biscuit/apps/chronos/migrations/0002_db_indexes.py
@@ -0,0 +1,30 @@
+# Generated by Django 2.2.4 on 2019-09-04 13:22
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+ dependencies = [
+ ('core', '0001_initial'),
+ ('chronos', '0001_initial'),
+ ]
+
+ operations = [
+ migrations.AlterUniqueTogether(
+ name='lessonsubstitution',
+ unique_together={('school', 'lesson_period', 'week')},
+ ),
+ migrations.AddIndex(
+ model_name='lesson',
+ index=models.Index(fields=['date_start', 'date_end'], name='chronos_les_date_st_5ecc62_idx'),
+ ),
+ migrations.AddIndex(
+ model_name='lessonperiod',
+ index=models.Index(fields=['lesson', 'period'], name='chronos_les_lesson__05250e_idx'),
+ ),
+ migrations.AddIndex(
+ model_name='timeperiod',
+ index=models.Index(fields=['time_start', 'time_end'], name='chronos_tim_time_st_491e4c_idx'),
+ ),
+ ]
diff --git a/biscuit/apps/chronos/models.py b/biscuit/apps/chronos/models.py
index d081812b..1bf172e4 100644
--- a/biscuit/apps/chronos/models.py
+++ b/biscuit/apps/chronos/models.py
@@ -43,6 +43,7 @@ class TimePeriod(SchoolRelated):
class Meta:
unique_together = [['school', 'weekday', 'period']]
ordering = ['weekday', 'period']
+ indexes = [models.Index(fields=['time_start', 'time_end'])]
class Subject(SchoolRelated):
@@ -101,6 +102,7 @@ class Lesson(SchoolRelated):
class Meta:
ordering = ['date_start']
+ indexes = [models.Index(fields=['date_start', 'date_end'])]
class LessonSubstitution(SchoolRelated):
@@ -118,6 +120,7 @@ class LessonSubstitution(SchoolRelated):
room = models.ForeignKey('Room', models.CASCADE, null=True)
class Meta:
+ unique_together = [['school', 'lesson_period', 'week']]
ordering = ['lesson_period__lesson__date_start', 'week',
'lesson_period__period__weekday', 'lesson_period__period__period']
@@ -165,3 +168,4 @@ class LessonPeriod(SchoolRelated):
class Meta:
ordering = ['lesson__date_start', 'period__weekday', 'period__period']
+ indexes = [models.Index(fields=['lesson', 'period'])]
--
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