BEFORE FORM COMMIT

Question

Hi All,
I have developed 2 forms, one Item master and Transaction form.
Item master form will have item details. like Item code, item id, description, delay days etc.. (all are database columns)
For Ex:
Item code - A
Item id -1
Description - PEN
Delay days default - 0
When coming to transaction screen, i had master detail relation.
i have provided header details and when coming to line level user will select the item code, it will populate the records like item id, description, delay days and save it. Data got commited and not posted. data is lying in DB.
here the delay days will be 0.
When user changes the item master delay days to 2. then before clicking the post button in the transaction screen it has to check again with the item master delay days, if it is not matching should pop-up message, like save, no cancel.
If user says SAVE, then in the transaction delay days = 2
else
NO proceed to POST
else
CANCEL nothing should happen for the form.
Note: user can use ctrl+s or by clicking commit button, the same should effect for both ways.
can any one tell me which trigger i need to use and where i need to use in header or detail level in transaction screen.
Thanks,
Siva.

Answer 1

Hi,
I have a form with master-detail realtion, user will complete header information and come to line level.
in the Line level i have two columns C1 and C2, if both the values are not equal i should promt error message to user, do you want update C2 in C1 or continue with C1.
the above changes should happen when user changing header check box to complete. That point of time i need to cross check the above in lines block and pop-up should be fired.
I have 2 blocks A and B
Block have check box (complete, incomplete)
i have written the code in block A, WHEN-LIST-CHANGED
BEGIN
GO_BLOCK('JNPP_GRV_LINES');
FIRST_RECORD;
LOOP
if :jnpp_grv_lines.calculate_value <> :jnpp_grv_lines.offsale_date then
     ok_alr('Not Matching');
     raise form_trigger_failure;
end if;
NEXT_RECORD;
EXIT WHEN :SYSTEM.LAST_RECORD = 'TRUE';
END LOOP;
END;
in the above code i need to pop-up aleat button, please check and try to help me.
Siva