Best Python code snippet using autotest_python
037_db_constraints.py
Source:037_db_constraints.py
...29 print ('Deleted %s invalid foreign key references from %s (%s)' %30 (deleted_count, pivot_table, foreign_key_field))31def unique_index_name(table):32 return table + '_both_ids'33def basic_index_name(table, field):34 if field == 'aclgroup_id':35 field = 'acl_group_id'36 return table + '_' + field37def create_unique_index(manager, pivot_table, first_field, second_field):38 index_name = unique_index_name(pivot_table)39 manager.execute('CREATE UNIQUE INDEX %s ON %s (%s, %s)' %40 (index_name, pivot_table, first_field, second_field))41 # these indices are in the migrations but may not exist for historical42 # reasons43 old_index_name = basic_index_name(pivot_table, first_field)44 execute_safely(manager, 'DROP INDEX %s ON %s' %45 (old_index_name, pivot_table))46def drop_unique_index(manager, pivot_table, first_field):47 index_name = unique_index_name(pivot_table)48 manager.execute('DROP INDEX %s ON %s' % (index_name, pivot_table))49 old_index_name = basic_index_name(pivot_table, first_field)50 manager.execute('CREATE INDEX %s ON %s (%s)' %51 (old_index_name, pivot_table, first_field))52def foreign_key_name(table, field):53 return '_'.join([table, field, 'fk'])54def create_foreign_key_constraint(manager, table, field, destination_table):55 key_name = foreign_key_name(table, field)56 manager.execute('ALTER TABLE %s ADD CONSTRAINT %s FOREIGN KEY (%s) '57 'REFERENCES %s (id) ON DELETE NO ACTION' %58 (table, key_name, field, destination_table))59def drop_foreign_key_constraint(manager, table, field):60 key_name = foreign_key_name(table, field)61 manager.execute('ALTER TABLE %s DROP FOREIGN KEY %s' % (table, key_name))62def cleanup_m2m_pivot(manager, pivot_table, first_field, first_table,63 second_field, second_table, create_unique):...
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