Dynamic poplist in a multi-record item.

Question

I have a multiprecord list item. I need to query and update the poplist everytime the user click on thge poplist, so I call a procedure pop_bcg_list() to upadet from the WHEN-NEW-ITEM-INSTANCE trigger,
PROCEDURE rgroup_to_ilist( ilist IN VARCHAR2,
rgroup IN VARCHAR2 )
IS
rows_rg NUMBER := 0;
list_index NUMBER := 0;
ivalue NUMBER;
BEGIN
rows_rg := get_group_row_count( rgroup );
clear_list( ilist );
FOR index_rg in 1..rows_rg LOOP
ivalue := get_group_char_cell( rgroup || '.C1', index_rg );
list_index := list_index + 1;
add_list_element(ilist, list_index, ivalue, ivalue );
END LOOP;
END rgroup_to_ilist;
PROCEDURE pop_bcg_list
IS
query_string varchar2(500) := null;
rg_id recordgroup;
current_ilist VARCHAR2(80) := :SYSTEM.Cursor_Item;
BEGIN
query_string := 'select to_char(bcg_group) C1, bcg_group C2 from loc_bcg_group ' ||
' where version = ''' || :control_block.set_version ||'''';
rg_id := create_group_from_query( 'RG_BCG_GROUP', query_string );
if populate_group( rg_id ) = 0
then
rgroup_to_ilist( current_ilist, 'RG_BCG_GROUP' );
end if;
delete_group(rg_id);
END pop_bcg_list;
It works fine on the cursor record, but when I click on the other records, the items in the poplist are duplicated. It keeps duplicating when I click on other records. Apparently clear_list() only clears the poplist in the current record? Is the true? Is there a way around this?
Thanks.
Clayton.

Answer 1

I remember coding a dynamic t list in one of my forms some time ago.
My code's something like this:
l_group_id := Create_Group_From_Query(l_rg_name, l_query);
l_status := Populate_Group(l_group_id);
IF l_status = 0
THEN -- No Error. Record Group has been Populated.
          clear_list('CONTROL.list1');
          POPULATE_LIST('CONTROL.list1', l_group_id);
          :CONTROL.list1 := Get_List_Element_Value('CONTROL.list1', 1);
END IF; -- IF l_status = 0
DELETE_GROUP(l_rg_name);
Why arent u using populate_list builtin.