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Migrate cavers field to ManyToManyField
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# Generated by Django 4.2.6 on 2023-10-31 17:00 | ||
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import uuid | ||
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import django.db.models.deletion | ||
from django.conf import settings | ||
from django.db import migrations, models | ||
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class Migration(migrations.Migration): | ||
dependencies = [ | ||
migrations.swappable_dependency(settings.AUTH_USER_MODEL), | ||
("logger", "0033_make_trip_owner_follow_their_trips"), | ||
] | ||
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operations = [ | ||
migrations.CreateModel( | ||
name="Caver", | ||
fields=[ | ||
( | ||
"id", | ||
models.BigAutoField( | ||
auto_created=True, | ||
primary_key=True, | ||
serialize=False, | ||
verbose_name="ID", | ||
), | ||
), | ||
("name", models.CharField(max_length=40)), | ||
( | ||
"added", | ||
models.DateTimeField( | ||
auto_now_add=True, verbose_name="caver added on" | ||
), | ||
), | ||
( | ||
"updated", | ||
models.DateTimeField( | ||
auto_now=True, verbose_name="caver last updated" | ||
), | ||
), | ||
( | ||
"uuid", | ||
models.UUIDField( | ||
default=uuid.uuid4, | ||
editable=False, | ||
help_text="A unique identifier for this caver.", | ||
unique=True, | ||
verbose_name="UUID", | ||
), | ||
), | ||
( | ||
"user", | ||
models.ForeignKey( | ||
on_delete=django.db.models.deletion.CASCADE, | ||
to=settings.AUTH_USER_MODEL, | ||
), | ||
), | ||
], | ||
), | ||
] |
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# Generated by Django 4.2.6 on 2023-10-31 17:01 | ||
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from django.db import migrations, models | ||
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class Migration(migrations.Migration): | ||
dependencies = [ | ||
("logger", "0034_caver"), | ||
] | ||
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operations = [ | ||
migrations.AddField( | ||
model_name="trip", | ||
name="cavers_new", | ||
field=models.ManyToManyField( | ||
blank=True, | ||
help_text="A list of cavers that were on this trip.", | ||
to="logger.caver", | ||
), | ||
), | ||
] |
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# Generated by Django 4.2.6 on 2023-10-31 17:03 | ||
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from django.db import migrations | ||
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def migrate_old_cavers_to_new_cavers(apps, schema_editor): | ||
"""Migrate old, comma separated text field to new ManyToMany field""" | ||
Trip = apps.get_model("logger", "Trip") | ||
Caver = apps.get_model("logger", "Caver") | ||
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for trip in Trip.objects.all(): | ||
if not trip.cavers: | ||
continue | ||
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caver_names = trip.cavers.split(",") | ||
for caver_name in caver_names: | ||
caver_name = caver_name.strip() | ||
if not caver_name: | ||
continue | ||
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try: | ||
caver = Caver.objects.get(name__iexact=caver_name, user=trip.user) | ||
except Caver.DoesNotExist: | ||
caver = Caver.objects.create(name=caver_name, user=trip.user) | ||
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trip.cavers_new.add(caver) | ||
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class Migration(migrations.Migration): | ||
dependencies = [ | ||
("logger", "0035_trip_cavers_new"), | ||
] | ||
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operations = [ | ||
migrations.RunPython(migrate_old_cavers_to_new_cavers), | ||
] |
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# Generated by Django 4.2.6 on 2023-10-31 17:19 | ||
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from django.db import migrations | ||
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class Migration(migrations.Migration): | ||
dependencies = [ | ||
("logger", "0036_old_cavers_to_new_cavers"), | ||
] | ||
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operations = [ | ||
migrations.RenameField( | ||
model_name="trip", | ||
old_name="cavers", | ||
new_name="cavers_old", | ||
), | ||
migrations.RenameField( | ||
model_name="trip", | ||
old_name="cavers_new", | ||
new_name="cavers", | ||
), | ||
] |
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