Submit page and pass value at the same time

Question

Hi All,
I have a tabular form on EMP table. The SQL query for the form is:
SELECT empno, ename, sal
FROM emp
WHERE deptno = :P0_DEPTNO
On the form, I have three buttons labelled as dept10, dept20 and dept30. I want to achieve the following when I press a button:
1. Submit the page.
2. Value of :P0_DEPTNO is set according to the button pressed.
I am able to achieve only one of the above at a time. How can I achieve both at the same time.
I am using Oracle 10g with Apex 4.0.
Thanks,
Zahid

Answer 1

Actually, it would be cleaner to create a single post submit PL/SQL process as follows:
BEGIN
:P0_DEPTNO := CASE :REQUEST
    WHEN 'dept10' THEN value_for_dept10 button
    WHEN 'dept20' THEN value_for_dept20 button
    WHEN 'dept30' THEN value_for_dept30 button
    END CASE;
END;Or if you want to set P0_DEPTNO to the name of the button, then just
:P0_DEPTNO  :=  :REQUEST;