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Code Issues 25 Releases Wiki Activity

Fixed #23043: alter_field drops defaults too

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This commit is contained in:
Andrew Godwin 2014-07-21 10:03:51 +01:00
parent 70c54a3694
commit 5875b8d133
1 changed files with 10 additions and 0 deletions
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10
django/db/backends/schema.py
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@ -766,6 +766,16 @@ class BaseDatabaseSchemaEditor(object):
"check": new_db_params['check'],
}
)
# Drop the default if we need to
# (Django usually does not use in-database defaults)
if not self.skip_default(new_field) and new_field.default is not None:
sql = self.sql_alter_column % {
"table": self.quote_name(model._meta.db_table),
"changes": self.sql_alter_column_no_default % {
"column": self.quote_name(new_field.column),
}
}
self.execute(sql)
# Reset connection if required
if self.connection.features.connection_persists_old_columns:
self.connection.close()