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Code Issues 32 Releases Wiki Activity

[1.7.x] Fixed #23880 -- Added missing index_together handling for SQLite

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Backport of d2202ec2d4 from master
This commit is contained in:
Markus Holtermann
2014-11-30 18:11:52 +01:00
committed by Tim Graham
parent d62e16fe46
commit ba3e976186
3 changed files with 23 additions and 5 deletions
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20
django/db/backends/sqlite3/schema.py
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@@ -43,7 +43,8 @@ class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
else:
raise ValueError("Cannot quote parameter value %r of type %s" % (value, type(value)))
def _remake_table(self, model, create_fields=[], delete_fields=[], alter_fields=[], override_uniques=None):
def _remake_table(self, model, create_fields=[], delete_fields=[], alter_fields=[], override_uniques=None,
override_indexes=None):
"""
Shortcut to transform a model from old_model into new_model
"""
@@ -110,11 +111,20 @@ class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
for unique in model._meta.unique_together
]
# Work out the new value for index_together, taking renames into
# account
if override_indexes is None:
override_indexes = [
[rename_mapping.get(n, n) for n in index]
for index in model._meta.index_together
]
# Construct a new model for the new state
meta_contents = {
'app_label': model._meta.app_label,
'db_table': model._meta.db_table + "__new",
'unique_together': override_uniques,
'index_together': override_indexes,
'apps': apps,
}
meta = type("Meta", tuple(), meta_contents)
@@ -189,6 +199,14 @@ class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
# Alter by remaking table
self._remake_table(model, alter_fields=[(old_field, new_field)])
def alter_index_together(self, model, old_index_together, new_index_together):
"""
Deals with a model changing its index_together.
Note: The input index_togethers must be doubly-nested, not the single-
nested ["foo", "bar"] format.
"""
self._remake_table(model, override_indexes=new_index_together)
def alter_unique_together(self, model, old_unique_together, new_unique_together):
"""
Deals with a model changing its unique_together.