Merge pull request #817 from rybaktomasz/ticket_5568 (e4e12875) · Commits · Dom Sekotill / django

django/core/management/commands/sqldropindexes.py

0 → 100644

+23 −0

Original line number	Diff line number	Diff line
		from __future__ import unicode_literals

		from optparse import make_option

		from django.core.management.base import AppCommand
		from django.core.management.sql import sql_destroy_indexes
		from django.db import connections, DEFAULT_DB_ALIAS

		class Command(AppCommand):
		help = "Prints the DROP INDEX SQL statements for the given model module name(s)."

		option_list = AppCommand.option_list + (
		make_option('--database', action='store', dest='database',
		default=DEFAULT_DB_ALIAS, help='Nominates a database to print the '
		'SQL for. Defaults to the "default" database.'),

		)

		output_transaction = True

		def handle_app(self, app, **options):
		return '\n'.join(sql_destroy_indexes(app, self.style, connections[options.get('database')]))

django/core/management/sql.py

+7 −0

Original line number	Diff line number	Diff line
		@@ -137,6 +137,13 @@ def sql_indexes(app, style, connection):
		output.extend(connection.creation.sql_indexes_for_model(model, style))
		return output

		def sql_destroy_indexes(app, style, connection):
		"Returns a list of the DROP INDEX SQL statements for all models in the given app."
		output = []
		for model in models.get_models(app):
		output.extend(connection.creation.sql_destroy_indexes_for_model(model, style))
		return output


		def sql_all(app, style, connection):
		"Returns a list of CREATE TABLE SQL, initial-data inserts, and CREATE INDEX SQL for the given module."

django/db/backends/creation.py

+46 −0

Original line number	Diff line number	Diff line
		@@ -259,6 +259,52 @@ class BaseDatabaseCreation(object):
		del references_to_delete[model]
		return output

		def sql_destroy_indexes_for_model(self, model, style):
		"""
		Returns the DROP INDEX SQL statements for a single model.
		"""
		if not model._meta.managed or model._meta.proxy or model._meta.swapped:
		return []
		output = []
		for f in model._meta.local_fields:
		output.extend(self.sql_destroy_indexes_for_field(model, f, style))
		for fs in model._meta.index_together:
		fields = [model._meta.get_field_by_name(f)[0] for f in fs]
		output.extend(self.sql_destroy_indexes_for_fields(model, fields, style))
		return output

		def sql_destroy_indexes_for_field(self, model, f, style):
		"""
		Return the DROP INDEX SQL statements for a single model field.
		"""
		if f.db_index and not f.unique:
		return self.sql_destroy_indexes_for_fields(model, [f], style)
		else:
		return []

		def sql_destroy_indexes_for_fields(self, model, fields, style):
		if len(fields) == 1 and fields[0].db_tablespace:
		tablespace_sql = self.connection.ops.tablespace_sql(fields[0].db_tablespace)
		elif model._meta.db_tablespace:
		tablespace_sql = self.connection.ops.tablespace_sql(model._meta.db_tablespace)
		else:
		tablespace_sql = ""
		if tablespace_sql:
		tablespace_sql = " " + tablespace_sql

		field_names = []
		qn = self.connection.ops.quote_name
		for f in fields:
		field_names.append(style.SQL_FIELD(qn(f.column)))

		index_name = "%s_%s" % (model._meta.db_table, self._digest([f.name for f in fields]))

		return [
		style.SQL_KEYWORD("DROP INDEX") + " " +
		style.SQL_TABLE(qn(truncate_name(index_name, self.connection.ops.max_name_length()))) + " " +
		";",
		]

		def create_test_db(self, verbosity=1, autoclobber=False):
		"""
		Creates a test database, prompting the user for confirmation if the

django/db/backends/mysql/creation.py

+26 −0

Original line number	Diff line number	Diff line
		@@ -41,3 +41,29 @@ class DatabaseCreation(BaseDatabaseCreation):
		def sql_for_inline_foreign_key_references(self, model, field, known_models, style):
		"All inline references are pending under MySQL"
		return [], True

		def sql_destroy_indexes_for_fields(self, model, fields, style):
		if len(fields) == 1 and fields[0].db_tablespace:
		tablespace_sql = self.connection.ops.tablespace_sql(fields[0].db_tablespace)
		elif model._meta.db_tablespace:
		tablespace_sql = self.connection.ops.tablespace_sql(model._meta.db_tablespace)
		else:
		tablespace_sql = ""
		if tablespace_sql:
		tablespace_sql = " " + tablespace_sql

		field_names = []
		qn = self.connection.ops.quote_name
		for f in fields:
		field_names.append(style.SQL_FIELD(qn(f.column)))

		index_name = "%s_%s" % (model._meta.db_table, self._digest([f.name for f in fields]))

		from ..util import truncate_name

		return [
		style.SQL_KEYWORD("DROP INDEX") + " " +
		style.SQL_TABLE(qn(truncate_name(index_name, self.connection.ops.max_name_length()))) + " " +
		style.SQL_KEYWORD("ON") + " " +
		style.SQL_TABLE(qn(model._meta.db_table)) + ";",
		]

docs/ref/django-admin.txt

+10 −0

Original line number	Diff line number	Diff line
		@@ -863,6 +863,16 @@ Note that the order in which the SQL files are processed is undefined.
		The :djadminopt:`--database` option can be used to specify the database for
		which to print the SQL.

		sqldropindexes <appname appname ...>
		--------------------------------

		.. django-admin:: sqldropindexes

		Prints the DROP INDEX SQL statements for the given app name(s).

		The :djadminopt:`--database` option can be used to specify the database for
		which to print the SQL.

		sqlflush
		--------