How create a named empty migration in a specific django app?
./manage.py makemigrations --empty my_django_app_name -n name_of_my_migration
How run some python code in my migration?
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from django.db import migrations
def my_function_with_my_python_code(apps, schema_editor):
print('write your python code here')
class Migration(migrations.Migration):
dependencies = [
('django_app_name', 'name_of_migration_dependencies'),
]
operations = [
migrations.RunPython(my_function_with_my_python_code),
]
How to call some Django model in my migration?
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from django.db import migrations
def my_function_with_my_python_code(apps, schema_editor):
MyModel = apps.get_model('django_app_name', 'MyModel')
res = MyModel.objects.all()
print('write your python code here')
class Migration(migrations.Migration):
dependencies = [
('django_app_name', 'name_of_migration_dependencies'),
]
operations = [
migrations.RunPython(my_function_with_my_python_code),
]