Trigger already exists about django-concurrency

[boatcoder]

Not sure why there is a drop_clause unless it is for when your remove concurrency from the project.

class PostgreSQL(TriggerFactory):
    drop_clause = r"""DROP TRIGGER IF EXISTS {trigger_name} ON {opts.db_table};"""

    update_clause = r"""CREATE OR REPLACE FUNCTION func_{trigger_name}()
    RETURNS TRIGGER as
    '
    BEGIN
       NEW.{field.column} = OLD.{field.column} +1;
        RETURN NEW;
    END;
    ' language 'plpgsql';

DROP TRIGGER IF EXISTS {trigger_name} ON {opts.db_table};
CREATE TRIGGER {trigger_name} BEFORE UPDATE
    ON {opts.db_table} FOR EACH ROW
    EXECUTE PROCEDURE func_{trigger_name}();
    """

Fixes the problem for me in triggers.py

[saxix]

Seems you added triggers manually or using the management command. can you remove them with ./manage.py triggers... ?