pg-channel 0.0.4.dev1

Generates PL/pgSQL script creating LISTEN/NOTIFY channels

Postgres channels

Generates PL/pgSQL script creating LISTEN/NOTIFY channels from just table name and dict of update triggers with fields sets.

Function plsql takes one requiered :str arg - table_name, and generates PL/pgSQL script for creating 3 channels for 3 type events:

Examples

On table: Fire tables_new: on create entity in table, tables_del: on delete entity from table, and tables_upd: on update any table.field:

plsql('table')

And second optional :dict arg - dict of list/tuples of specified fields for triggering update event(s):

Set exactly field for triggering event: Fire tables_upd_event1: on update table.field1:

plsql('table', 7, {'event1': ['field1']})

AND/OR conditions: Fire tables_upd_event1: on update field1 AND field2, and tables_upd_event2: on update field2 OR field3:

{'event1': ('field1','field2'), 5, '_event2': ['field2', 'field3']}