app/django/db/backends/postgresql_psycopg2/introspection.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Tue, 14 Oct 2008 16:10:07 +0000
changeset 324 05e21c089be6
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Add missing import in soc/views/site/sponsor/list.py which caused exception when app was deployed and first site you visited was "List Site Sponsors". Update files according to recent django update and django backwards incompatibility (for example newforms is changed to forms). Patch by: Pawel Solyga Review by: to-be-reviewed

from django.db.backends.postgresql.introspection import DatabaseIntrospection as PostgresDatabaseIntrospection

class DatabaseIntrospection(PostgresDatabaseIntrospection):

    def get_relations(self, cursor, table_name):
        """
        Returns a dictionary of {field_index: (field_index_other_table, other_table)}
        representing all relationships to the given table. Indexes are 0-based.
        """
        cursor.execute("""
            SELECT con.conkey, con.confkey, c2.relname
            FROM pg_constraint con, pg_class c1, pg_class c2
            WHERE c1.oid = con.conrelid
                AND c2.oid = con.confrelid
                AND c1.relname = %s
                AND con.contype = 'f'""", [table_name])
        relations = {}
        for row in cursor.fetchall():
            # row[0] and row[1] are single-item lists, so grab the single item.
            relations[row[0][0] - 1] = (row[1][0] - 1, row[2])
        return relations