populating data using cursor in oracle forms - oracleforms

Question

I have created a block with 4 text items which i have to populate using a cursor.
I have written a code in the same blocks post-query trigger which is as follows:
DECLARE
CURSOR D_COMM_DET IS
SELECT COMM_SRNO, COMM_SUB_SRNO, COMM_REASON
FROM CUST_COMM
WHERE LEAD_ID = :INQUIRY.INQ_ID; -- master block "INQUIRY"
BEGIN
GO_BLOCK('DISPLAY_DET');
CLEAR_BLOCK('NO_VALIDATE');
FIRST_RECORD;
FOR CUR IN D_COMM_DET
LOOP
:DISPLAY_COMM_DET.A_COMM_SRNO := CUR.COMM_SRNO;
:DISPLAY_COMM_DET.A_COMM_SUB_SRNO := CUR.COMM_SUB_SRNO;
:DISPLAY_COMM_DET.A_COMM_REASON := CUR.COMM_REASON;
NEXT_RECORD;
END LOOP;
FIRST_RECORD;
END;
But this is not populating the data in the text items neither it is showing any errors.
Can anyone help regarding the same.
Thankyou.

Answer 1

You cannot use restricted builtin procedures like GO_BLOCK, CLEAR_BLOCK, NEXT_RECORD in POST-QUERY trigger.
In your case make DISPLAY_COMM_DET block a detail block to INQUIRY block.
Add LEAD_ID item to DISPLAY_COMM_DET block. It can be hidden (Visible=No)
Set DISPLAY_COMM_DET as a database block based on CUST_COMM table
Create a relation on INQUIRY block with relation INQUIRY.INQ_ID=DISPLAY_COMM_DET.LEAD_ID.
Delete POST-QUERY trigger, you don't need it.

Answer 2

I'm not sure if I understand you right. If you need to display reason name from other table, then POST-QUERY trigger is right, but on DISPLAY_COMM_DET block.
Let this block as a detail block based on CUST_COMM table. Create non database item NDB_COMM_REASON_VALUE. Create POST-QUERY trigger on DISPLAY_COMM_DET block like this:
declare
cursor c_reason is
select comm_value
from common_master
where comm_reason = :display_comm_det.comm_reason;
begin
open c_reason;
fetch c_reason into :display_comm_det.ndb_comm_reason_value;
close c_reason;
end;

Answer 3

You cannot use restricted builtin procedures like GO_BLOCK, CLEAR_BLOCK, NEXT_RECORD in POST-QUERY trigger.
Write Execute_Query and the mentioned code in When-Button-Pressed Trigger.