diff options
Diffstat (limited to 'django')
| -rw-r--r-- | django/db/backends/schema.py | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/django/db/backends/schema.py b/django/db/backends/schema.py index c5e297197b..bae0b1d71d 100644 --- a/django/db/backends/schema.py +++ b/django/db/backends/schema.py @@ -1,9 +1,3 @@ -import sys -import time - -from django.conf import settings -from django.db import transaction -from django.db.utils import load_backend from django.db.backends.creation import BaseDatabaseCreation from django.db.backends.util import truncate_name from django.utils.log import getLogger @@ -25,12 +19,19 @@ class BaseDatabaseSchemaEditor(object): then the relevant actions, and then commit(). This is necessary to allow things like circular foreign key references - FKs will only be created once commit() is called. + + TODO: + - Repointing of FKs + - Repointing of M2Ms + - Check constraints (PosIntField) + - PK changing """ # Overrideable SQL templates sql_create_table = "CREATE TABLE %(table)s (%(definition)s)" sql_create_table_unique = "UNIQUE (%(columns)s)" sql_rename_table = "ALTER TABLE %(old_table)s RENAME TO %(new_table)s" + sql_retablespace_table = "ALTER TABLE %(table)s SET TABLESPACE %(new_tablespace)s" sql_delete_table = "DROP TABLE %(table)s CASCADE" sql_create_column = "ALTER TABLE %(table)s ADD COLUMN %(column)s %(definition)s" @@ -261,6 +262,25 @@ class BaseDatabaseSchemaEditor(object): "columns": ", ".join(self.quote_name(column) for column in columns), }) + def alter_db_table(self, model, old_db_table, new_db_table): + """ + Renames the table a model points to. + """ + self.execute(self.sql_rename_table % { + "old_table": self.quote_name(old_db_table), + "new_table": self.quote_name(new_db_table), + }) + + def alter_db_tablespace(self, model, old_db_tablespace, new_db_tablespace): + """ + Moves a model's table between tablespaces + """ + self.execute(self.sql_rename_table % { + "table": self.quote_name(model._meta.db_table), + "old_tablespace": self.quote_name(old_db_tablespace), + "new_tablespace": self.quote_name(new_db_tablespace), + }) + def create_field(self, model, field, keep_default=False): """ Creates a field on a model. |