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- from django.apps import apps
- from django.db import models
-
-
- def sql_flush(style, connection, only_django=False, reset_sequences=True, allow_cascade=False):
- """
- Return a list of the SQL statements used to flush the database.
-
- If only_django is True, only include the table names that have associated
- Django models and are in INSTALLED_APPS .
- """
- if only_django:
- tables = connection.introspection.django_table_names(only_existing=True, include_views=False)
- else:
- tables = connection.introspection.table_names(include_views=False)
- seqs = connection.introspection.sequence_list() if reset_sequences else ()
- statements = connection.ops.sql_flush(style, tables, seqs, allow_cascade)
- return statements
-
-
- def emit_pre_migrate_signal(verbosity, interactive, db, **kwargs):
- # Emit the pre_migrate signal for every application.
- for app_config in apps.get_app_configs():
- if app_config.models_module is None:
- continue
- if verbosity >= 2:
- print("Running pre-migrate handlers for application %s" % app_config.label)
- models.signals.pre_migrate.send(
- sender=app_config,
- app_config=app_config,
- verbosity=verbosity,
- interactive=interactive,
- using=db,
- **kwargs
- )
-
-
- def emit_post_migrate_signal(verbosity, interactive, db, **kwargs):
- # Emit the post_migrate signal for every application.
- for app_config in apps.get_app_configs():
- if app_config.models_module is None:
- continue
- if verbosity >= 2:
- print("Running post-migrate handlers for application %s" % app_config.label)
- models.signals.post_migrate.send(
- sender=app_config,
- app_config=app_config,
- verbosity=verbosity,
- interactive=interactive,
- using=db,
- **kwargs
- )
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