How to add only checked rows in APEX tabular forms to another table? - sql

Question

I've created a tabular form from a view - so only the checked items be added to a table. So far I can only insert all the records not individually selected rows.
This is the code I used:
DECLARE
v_insertcount NUMBER := 0;
BEGIN
FOR i IN 1 .. apex_application.g_f02.COUNT
LOOP
IF apex_application.g_f01 (i) IS NOT NULL THEN -- this is the checkbox
insert into my_table (pme_id, MYREF, STAC, START_DATE)
values ( SEQ_PME.NEXTVAL,
:P5_MYREF
apex_application.g_f02(i),
apex_application.g_f03(i)
)
v_insertcount := v_insertcount + 1;
END IF;
END LOOP;
END;

Answer 1

First you have to remember that only checked checkboxes are submitted. So you cannot test for NULL in order to identify unchecked boxes. That are simply not in the array.
So, as the checkbox array size is lower or equal to the other fields array size, you cannot use index to find corresponding values of the same row.
There are some clever tricks to overcome that limitations. However, for simple cases, a solution is simply to use a look-up function to map id to index.
FUNCTION array_search(value IN VARCHAR2, arr IN apex_application_global.vc_arr2)
RETURN PLS_INTEGER
IS
BEGIN
FOR i IN 1 .. arr.COUNT
LOOP
IF arr(i) = value THEN
RETURN i;
END IF;
END LOOP;
return 0;
END;
This is a linear search. So the performances are not very good. Anyway for form processing it is probably sufficient. Given that function, you can now write:
Region source
SELECT APEX_ITEM.CHECKBOX(1,pme_id) " ",
...
on-submit process
FOR i IN 1 .. apex_application.g_f01.COUNT -- your checkboxes
LOOP
-- identify the "row index"
idx := array_search(apex_application.g_f01(i), apex_application.g_f02);
-- ^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^
-- checkboxes array id array
-- assuming now idx > 0
-- (in production code, should check and log in case of `0`)
-- do whatever you want, using `idx` as index
insert into my_table
(pme_id,
MYREF,
STAC,
START_DATE
)
values (
SEQ_PME.NEXTVAL,
:P5_MYREF
apex_application.g_f02 (idx),
apex_application.g_f03 (idx)
);
END LOOP;