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# Generated by Django 3.0.7 on 2020-06-27 14:00
import django.contrib.postgres.fields.jsonb
import django.db.models.deletion
from django.db import migrations, models
def migrate_lesson(apps, schema_editor):
Lesson = apps.get_model("chronos", "Lesson")
ValidityRange = apps.get_model("chronos", "ValidityRange")
SchoolTerm = apps.get_model("core", "SchoolTerm")
db_alias = schema_editor.connection.alias
for lesson in Lesson.objects.using(db_alias).all():
date_start = lesson.date_start
date_end = lesson.date_end
try:
school_term = SchoolTerm.objects.using(db_alias).get(
date_start__lte=date_end, date_end__gte=date_start
)
except SchoolTerm.DoesNotExist:
school_term = SchoolTerm.objects.using(db_alias).create(
date_start=date_start, date_end=date_end
)
try:
validity_range = ValidityRange.objects.using(db_alias).get(
school_term=school_term,
date_start__lte=date_end,
date_end__gte=date_start,
)
except ValidityRange.DoesNotExist:
validity_range = ValidityRange.objects.using(db_alias).create(
date_start=date_start, date_end=date_end, school_term=school_term
)
lesson.validity = validity_range
lesson.save()
class Migration(migrations.Migration):
dependencies = [
("core", "0002_school_term"),
("sites", "0002_alter_domain_unique"),
("chronos", "0001_initial"),
]
operations = [
migrations.CreateModel(
name="ValidityRange",
fields=[
(
"id",
models.BigAutoField(
auto_created=True,
primary_key=True,
serialize=False,
verbose_name="ID",
),
),
(
"extended_data",
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default=dict, editable=False
),
),
(
"name",
models.CharField(blank=True, max_length=255, verbose_name="Name"),
),
("date_start", models.DateField(verbose_name="Start date")),
("date_end", models.DateField(verbose_name="End date")),
],
options={
"verbose_name": "Validity range",
"verbose_name_plural": "Validity ranges",
},
),
migrations.AlterModelOptions(
name="lesson",
options={
"ordering": ["validity__date_start", "subject"],
"verbose_name": "Lesson",
"verbose_name_plural": "Lessons",
},
),
migrations.AlterModelOptions(
name="lessonperiod",
options={
"ordering": [
"lesson__validity__date_start",
"period__weekday",
"period__period",
"lesson__subject",
],
"verbose_name": "Lesson period",
"verbose_name_plural": "Lesson periods",
},
),
migrations.AlterModelOptions(
name="lessonsubstitution",
options={
"ordering": [
"lesson_period__lesson__validity__date_start",
"week",
"lesson_period__period__weekday",
"lesson_period__period__period",
],
"verbose_name": "Lesson substitution",
"verbose_name_plural": "Lesson substitutions",
},
),
migrations.AlterModelManagers(name="break", managers=[],),
migrations.AlterModelManagers(name="exam", managers=[],),
migrations.AlterModelManagers(name="lesson", managers=[],),
migrations.AlterModelManagers(name="timeperiod", managers=[],),
migrations.AddField(
model_name="absence",
name="school_term",
field=models.ForeignKey(
blank=True,
null=True,
on_delete=django.db.models.deletion.CASCADE,
related_name="+",
to="core.SchoolTerm",
verbose_name="Linked school term",
),
),
migrations.AddField(
model_name="break",
name="school_term",
field=models.ForeignKey(
blank=True,
null=True,
on_delete=django.db.models.deletion.CASCADE,
related_name="+",
to="core.SchoolTerm",
verbose_name="Linked school term",
),
),
migrations.AddField(
model_name="event",
name="school_term",
field=models.ForeignKey(
blank=True,
null=True,
on_delete=django.db.models.deletion.CASCADE,
related_name="+",
to="core.SchoolTerm",
verbose_name="Linked school term",
),
),
migrations.AddField(
model_name="exam",
name="school_term",
field=models.ForeignKey(
blank=True,
null=True,
on_delete=django.db.models.deletion.CASCADE,
related_name="+",
to="core.SchoolTerm",
verbose_name="Linked school term",
),
),
migrations.AddField(
model_name="extralesson",
name="school_term",
field=models.ForeignKey(
blank=True,
null=True,
on_delete=django.db.models.deletion.CASCADE,
related_name="+",
to="core.SchoolTerm",
verbose_name="Linked school term",
),
),
migrations.AddField(
model_name="validityrange",
name="school_term",
field=models.ForeignKey(
on_delete=django.db.models.deletion.CASCADE,
related_name="validity_ranges",
to="core.SchoolTerm",
verbose_name="School term",
),
),
migrations.AddField(
model_name="validityrange",
name="site",
field=models.ForeignKey(
default=1,
editable=False,
on_delete=django.db.models.deletion.CASCADE,
to="sites.Site",
),
),
migrations.AddField(
model_name="lesson",
name="validity",
field=models.ForeignKey(
on_delete=django.db.models.deletion.CASCADE,
related_name="+",
to="chronos.ValidityRange",
verbose_name="Linked validity range",
null=True,
blank=True,
),
preserve_default=False,
),
migrations.AddField(
model_name="supervision",
name="validity",
field=models.ForeignKey(
on_delete=django.db.models.deletion.CASCADE,
related_name="+",
to="chronos.ValidityRange",
verbose_name="Linked validity range",
null=True,
blank=True,
),
preserve_default=False,
),
migrations.AddField(
model_name="timeperiod",
name="validity",
field=models.ForeignKey(
on_delete=django.db.models.deletion.CASCADE,
related_name="+",
to="chronos.ValidityRange",
verbose_name="Linked validity range",
null=True,
blank=True,
),
preserve_default=False,
),
migrations.AlterUniqueTogether(
name="validityrange", unique_together={("date_start", "date_end")},
),
migrations.RunPython(migrate_lesson),
migrations.RemoveIndex(
model_name="lesson", name="chronos_les_date_st_5ecc62_idx",
),
migrations.RemoveField(model_name="lesson", name="date_end",),
migrations.RemoveField(model_name="lesson", name="date_start",),
]