[1.7.x] Fixed #23030 -- Properly handled geometry columns metadata during migrations (ddb56749) · Commits · Dom Sekotill / django

django/contrib/gis/db/backends/postgis/models.py

+2 −1

Original line number	Diff line number	Diff line
		@@ -10,7 +10,8 @@ from django.utils.encoding import python_2_unicode_compatible
		class PostGISGeometryColumns(models.Model):
		"""
		The 'geometry_columns' table from the PostGIS. See the PostGIS
		documentation at Ch. 4.2.2.
		documentation at Ch. 4.3.2.
		On PostGIS 2, this is a view.
		"""
		f_table_catalog = models.CharField(max_length=256)
		f_table_schema = models.CharField(max_length=256)

django/contrib/gis/db/backends/spatialite/schema.py

+9 −8

Original line number	Diff line number	Diff line
		@@ -62,13 +62,13 @@ class SpatialiteSchemaEditor(DatabaseSchemaEditor):
		self.execute(sql)
		self.geometry_sql = []

		def delete_model(self, model):
		def delete_model(self, model, **kwargs):
		from django.contrib.gis.db.models.fields import GeometryField
		# Drop spatial metadata (dropping the table does not automatically remove them)
		for field in model._meta.local_fields:
		if isinstance(field, GeometryField):
		self.remove_geometry_metadata(model, field)
		super(SpatialiteSchemaEditor, self).delete_model(model)
		super(SpatialiteSchemaEditor, self).delete_model(model, **kwargs)

		def add_field(self, model, field):
		from django.contrib.gis.db.models.fields import GeometryField
		@@ -81,12 +81,6 @@ class SpatialiteSchemaEditor(DatabaseSchemaEditor):
		else:
		super(SpatialiteSchemaEditor, self).add_field(model, field)

		def remove_field(self, model, field):
		from django.contrib.gis.db.models.fields import GeometryField
		if isinstance(field, GeometryField):
		self.remove_geometry_metadata(model, field)
		super(SpatialiteSchemaEditor, self).remove_field(model, field)

		def alter_db_table(self, model, old_db_table, new_db_table):
		super(SpatialiteSchemaEditor, self).alter_db_table(model, old_db_table, new_db_table)
		self.execute(
		@@ -95,3 +89,10 @@ class SpatialiteSchemaEditor(DatabaseSchemaEditor):
		"new_table": self.quote_name(new_db_table),
		}
		)
		# Also rename spatial index tables
		for field in model._meta.local_fields:
		if getattr(field, 'spatial_index', False):
		self.execute(self.sql_rename_table % {
		"old_table": self.quote_name("idx_%s_%s" % (old_db_table, field.column)),
		"new_table": self.quote_name("idx_%s_%s" % (new_db_table, field.column)),
		})

django/contrib/gis/tests/gis_migrations/migrations/0001_initial.py

+20 −3

Original line number	Diff line number	Diff line
		@@ -2,9 +2,10 @@ from django.db import models, migrations
		import django.contrib.gis.db.models.fields


		# Used for regression test of ticket #22001: https://code.djangoproject.com/ticket/22001
		class Migration(migrations.Migration):

		"""
		Used for gis.specific migration tests.
		"""
		operations = [
		migrations.CreateModel(
		name='Neighborhood',
		@@ -29,5 +30,21 @@ class Migration(migrations.Migration):
		options={
		},
		bases=(models.Model,),
		)
		),
		migrations.CreateModel(
		name='Family',
		fields=[
		('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
		('name', models.CharField(max_length=100, unique=True)),
		],
		options={
		},
		bases=(models.Model,),
		),
		migrations.AddField(
		model_name='household',
		name='family',
		field=models.ForeignKey(blank=True, to='gis.Family', null=True),
		preserve_default=True,
		),
		]

django/contrib/gis/tests/gis_migrations/test_commands.py

+20 −0

Original line number	Diff line number	Diff line
		@@ -34,17 +34,37 @@ class MigrateTests(TransactionTestCase):
		Tests basic usage of the migrate command when a model uses Geodjango
		fields. Regression test for ticket #22001:
		https://code.djangoproject.com/ticket/22001

		It's also used to showcase an error in migrations where spatialite is
		enabled and geo tables are renamed resulting in unique constraint
		failure on geometry_columns. Regression for ticket #23030:
		https://code.djangoproject.com/ticket/23030
		"""
		# Make sure no tables are created
		self.assertTableNotExists("migrations_neighborhood")
		self.assertTableNotExists("migrations_household")
		self.assertTableNotExists("migrations_family")
		# Run the migrations to 0001 only
		call_command("migrate", "gis", "0001", verbosity=0)
		# Make sure the right tables exist
		self.assertTableExists("gis_neighborhood")
		self.assertTableExists("gis_household")
		self.assertTableExists("gis_family")
		# Unmigrate everything
		call_command("migrate", "gis", "zero", verbosity=0)
		# Make sure it's all gone
		self.assertTableNotExists("gis_neighborhood")
		self.assertTableNotExists("gis_household")
		self.assertTableNotExists("gis_family")
		# Even geometry columns metadata
		try:
		GeoColumn = connection.ops.geometry_columns()
		except NotImplementedError:
		# Not all GIS backends have geometry columns model
		pass
		else:
		self.assertEqual(
		GeoColumn.objects.filter(
		**{'%s__in' % GeoColumn.table_name_col(): ["gis_neighborhood", "gis_household"]}
		).count(),
		0)

django/db/backends/sqlite3/schema.py

+12 −6

Original line number	Diff line number	Diff line
		@@ -127,13 +127,10 @@ class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
		', '.join(y for x, y in field_maps),
		self.quote_name(model._meta.db_table),
		))
		# Delete the old table (not using self.delete_model to avoid deleting
		# all implicit M2M tables)
		self.execute(self.sql_delete_table % {
		"table": self.quote_name(model._meta.db_table),
		})
		# Delete the old table
		self.delete_model(model, handle_autom2m=False)
		# Rename the new to the old
		self.alter_db_table(model, temp_model._meta.db_table, model._meta.db_table)
		self.alter_db_table(temp_model, temp_model._meta.db_table, model._meta.db_table)
		# Run deferred SQL on correct table
		for sql in self.deferred_sql:
		self.execute(sql.replace(temp_model._meta.db_table, model._meta.db_table))
		@@ -142,6 +139,15 @@ class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
		if restore_pk_field:
		restore_pk_field.primary_key = True

		def delete_model(self, model, handle_autom2m=True):
		if handle_autom2m:
		super(DatabaseSchemaEditor, self).delete_model(model)
		else:
		# Delete the table (and only that)
		self.execute(self.sql_delete_table % {
		"table": self.quote_name(model._meta.db_table),
		})

		def add_field(self, model, field):
		"""
		Creates a field on a model.