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Add revisions table to Events #12

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Add revisions table to Events #12

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14 changes: 14 additions & 0 deletions Application/Schema.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -44,3 +44,17 @@ CREATE TABLE reservation_jobs (
ALTER TABLE events ADD CONSTRAINT events_ref_venue_id FOREIGN KEY (venue_id) REFERENCES venues (id) ON DELETE NO ACTION;
ALTER TABLE reservation_jobs ADD CONSTRAINT reservation_jobs_ref_reservation_id FOREIGN KEY (reservation_id) REFERENCES reservations (id) ON DELETE CASCADE;
ALTER TABLE reservations ADD CONSTRAINT reservations_ref_event_id FOREIGN KEY (event_id) REFERENCES events (id) ON DELETE NO ACTION;


CREATE TABLE events_revisions ( revision SERIAL NOT NULL) INHERITS (events);

CREATE OR REPLACE FUNCTION table_update() RETURNS TRIGGER AS $table_update$
BEGIN
INSERT INTO events_revisions SELECT NEW.*;
RETURN NEW;
END;
$table_update$ LANGUAGE plpgsql;

CREATE TRIGGER table_update
AFTER INSERT OR UPDATE ON events
FOR EACH ROW EXECUTE PROCEDURE table_update();