app.infrastructure.migrations.0003_alter_blockchange_from_block_and_more 

 1# Generated by Django 5.2.2 on 2025-06-18 07:12
 2
 3import django.db.models.deletion
 4from django.db import migrations, models
 5
 6
 7class Migration(migrations.Migration):
 8
 9    dependencies = [
10        ('infrastructure', '0002_blockchange_wardchange'),
11        ('management', '0004_ward_created_by'),
12    ]
13
14    operations = [
15        migrations.AlterField(
16            model_name='blockchange',
17            name='from_block',
18            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='management.blocks'),
19        ),
20        migrations.AlterField(
21            model_name='wardchange',
22            name='from_ward',
23            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='management.ward'),
24        ),
25    ]
class Migration(django.db.migrations.migration.Migration): 
 8class Migration(migrations.Migration):
 9
10    dependencies = [
11        ('infrastructure', '0002_blockchange_wardchange'),
12        ('management', '0004_ward_created_by'),
13    ]
14
15    operations = [
16        migrations.AlterField(
17            model_name='blockchange',
18            name='from_block',
19            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='management.blocks'),
20        ),
21        migrations.AlterField(
22            model_name='wardchange',
23            name='from_ward',
24            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='management.ward'),
25        ),
26    ]

The base class for all migrations.

Migration files will import this from django.db.migrations.Migration and subclass it as a class called Migration. It will have one or more of the following attributes:

  • operations: A list of Operation instances, probably from django.db.migrations.operations
  • dependencies: A list of tuples of (app_path, migration_name)
  • run_before: A list of tuples of (app_path, migration_name)
  • replaces: A list of migration_names

Note that all migrations come out of migrations and into the Loader or Graph as instances, having been initialized with their app label and name.

dependencies = [('infrastructure', '0002_blockchange_wardchange'), ('management', '0004_ward_created_by')]
operations = [<AlterField model_name='blockchange', name='from_block', field=<django.db.models.fields.related.ForeignKey>>, <AlterField model_name='wardchange', name='from_ward', field=<django.db.models.fields.related.ForeignKey>>]