plpgsql trapping full detail error message

Hello,

I would like to catch and then log full detailed error message from
plpgsql function. I am using currently this method:

WHEN OTHERS THEN
v_actionstatus_id := 2;

IF (v_log_flag = 1) --if 1 then log actions
THEN
INSERT INTO logdata.logaction(logaction_id, oper_id, action_by,
actionstatus_id)
VALUES(v_logaction_id, v_oper_id, p_action_by, v_actionstatus_id);

INSERT INTO logdata.logactionparamint(logaction_id, operparam_id,
operparam_value)
VALUES(v_logaction_id, v_operparam_id1, p_session_id);
INSERT INTO logdata.logactionparamint(logaction_id, operparam_id,
operparam_value)
VALUES(v_logaction_id, v_operparam_id2, p_action_by);
INSERT INTO logdata.logactionparamint(logaction_id, operparam_id,
operparam_value)
VALUES(v_logaction_id, v_operparam_id3, p_action_call_by);

INSERT INTO logdata.logerror(logaction_id, errno, error, descript)
VALUES(v_logaction_id, SQLSTATE, SQLERRM, v_descript);
END IF;

RETURN 'ERROR: '||SQLSTATE||' in
stat.transegment('||p_session_id||','||p_action_by||','||p_action_call_b
y||'). Details in logdata.logaction WHERE logaction_id =
'||v_logaction_id;

It works fine but it log only SQLERRM and not ,for example, error line
and others details.

Sincerely,
Radovan Jablonovsky
Database Architect/DBA
Streamline Technology
Tel: (250) 571-7773
Email: rjablonov@arrow.ca