app/django/db/backends/postgresql_psycopg2/introspection.py
author Sverre Rabbelier <srabbelier@gmail.com>
Tue, 02 Dec 2008 17:59:44 +0000
changeset 647 355ac73823a1
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Swap order of merged params to fix sponsor select view The sponsor select view (in 'create new program') was showing the wrong information (and also using the wrong list template) because the order in which the params were merged was wrong way around. This fixes that and at the same time fixes the 'instruction_text' attribute, which should be named 'list_description' instead. At the same time we lookup and set Sponsor as the scope of the newly created program. Patch by: Sverre Rabbelier

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