How to set a checkbox to call javascript for calling package procedure?

Question

Hi folks,
I have a report where each row includes a dynamically created checkbox:
Step 1: define report in APEX based on this test query
select object_id,
       txt,
       htmldb_item.checkbox
          1,
          data.object_id,
          'onclick=alert('||data.object_id||');'
       ) cb
from
  select 1 object_id, 'AAAA' txt from dual union
  select 2 object_id, 'BBBB' txt from dual union
  select 3 object_id, 'CCCC' txt from dual
)  data Step 2: create a log table
create table tk_test_log
   log_val  varchar2(100)
);Step 3: Then I have a package stored in db called: tk_test
create or replace package tk_test is
  procedure add(p_num number);
  procedure remove(p_num number);
end tk_test;
create or replace package body tk_test is
  procedure add(p_num number) is
  begin
    insert into tk_test_log values ('TK_TEST.ADD: '||p_num||'   '||to_char(sysdate,'DD/MM/YYYY HH24:MI:SS'));
  end;
  procedure remove(p_num number) is
  begin
    insert into tk_test_log values ('TK_TEST.REMOVE: '||p_num||'   '||to_char(sysdate,'DD/MM/YYYY HH24:MI:SS'));
  end;
end tk_test;Is it possible to call "tk_test.add" procedure everytime when user checks any of checkboxes and to call "tk_test.remove" when user un-check any checkbox?
How should I modify a javascript in step 1 (currently = alert('||data.object_id||') ) to obtain similar solution?
Please help,
Tomas

Answer 1

Hi Earl,
Thanks for your reply.
Well this is exactly what I'm planning to use within my package :). Above example was just a really into into problem.
In reallity:
"add" prcedure will add a record into collection (plsql table - stored as a type)
and
"remove" procedure will remove it from it
But my problemis how to call it from javascript.
You're probably suggesting to use/maintain this collection within APEX and not within database?
Here is how I've defined my collection:
create or replace type ap_choice_temp_object_type is object
    ( person_id number,
      choice_id number,
      added     date
create or replace type ap_choice_temp_tab_type is table of ap_choice_temp_object_type;       And then in package I have procedures:
  procedure clear_ap_choice_temp_tab is
  begin
     l_choice_temp_tab := ap_choice_temp_tab_type();
  end;
  procedure add_ap_choice_temp_row (p_person_id number,
                                    p_choice_id   number
                                    ) is
  begin
    if l_choice_temp_tab.exists = false then
       clear_ap_choice_temp_tab;
    end if;
    l_choice_temp_tab.extend;
    l_choice_temp_tab(l_choice_temp_tab.last) := ap_choice_temp_object_type(person_id => p_person_id,
                                                                            choice_id => p_choice_id,
                                                                            added => sysdate
  end;
  procedure remove_ap_choice_temp_row (p_person_id number,
                                       p_choice_id   number
                                       ) is
  i integer;
  begin
    -- this should be more optimalised -- this version is just 1-st try !
    print_ap_choice_temp_tab;
    i := l_choice_temp_tab.first;
    loop
       if l_choice_temp_tab(i).person_id = p_person_id and l_choice_temp_tab(i).choice_id = p_choice_id then
         l_choice_temp_tab.delete(i);
       end if; 
       i:= l_choice_temp_tab.next(i);
       exit when i is null;
    end loop;
    print_ap_choice_temp_tab;                                                                              
  end;
  procedure print_ap_choice_temp_tab is
   i integer;
  begin
     dbms_output.put_line('Start');
     i := l_choice_temp_tab.first;
     loop
        dbms_output.put_line(l_choice_temp_tab(i).person_id||' | '||l_choice_temp_tab(i).choice_id||' | '||l_choice_temp_tab(i).added);
        i:= l_choice_temp_tab.next(i);
        exit when i is null;
      end loop;    
     dbms_output.put_line('End');
  end;Testing code
begin
  tk_test.clear_ap_choice_temp_tab;
  tk_test.add_ap_choice_temp_row(123,321);
  tk_test.add_ap_choice_temp_row(777,555);
  tk_test.add_ap_choice_temp_row(9999,4445);
  tk_test.remove_ap_choice_temp_row(777,555);
  --tk_test.print_ap_choice_temp_tab;
end;     Do you have any nice example how to use what you're suggesting in APEX? I mean "create some collection at page display time, let the user update the collection (through checkboxes) while they're scrolling through things."
I think this example would be usefull for many developers :)
Thanks,
Tomas