Set default radio group value

Question

Hi,
I want to clarify the following:
Is it true that if I assign a radio group to a base table field then I can assign a default value to it?
If it is not a non-base table field, I can still assign a radio group to it, but I cannot set a default value for the radio group?
The portal version that I am using is 3.0.9
on Solaris.
Thanks;
Kelly.

Answer 1

Hi,
In order to ensure that the "ALL" option is selected, you have to do a few things:
1 - On your radiogroup's definition, set the following:
Display Null: No
Null display value: (leave blank)
Null return value: (leave blank)
2 - then, update the List of values definition setting to include a NULL value. Something like:
SELECT ' ALL ' d, -1 r FROM DUAL
UNION ALL
SELECT DNAME d, DEPTNO r FROM DEPT ORDER BY 1(this way, ALL becomes part of the data). Note that, in this example, I have used -1 as the "null return value" - this is because I am using a number field here (DEPTNO). Change this to a string if you are using a VARCHAR2 field.
3 - Create a new Page Computation. This should run Before Header on the radiogroup item. The computation would be a Static Assignment of the "null return value" you set above - in my example, this is -1 The computation should be conditional on the value of the radiogroup item being null. This, I have found, is the best way to ensure that you get a default value before the page is loaded.
I have done all this on: [http://apex.oracle.com/pls/otn/f?p=33642:216]. My report's SQL query is then:
SELECT EMPNO, ENAME, DEPTNO
FROM EMP
WHERE :P216_DEPTNO = -1 OR DEPTNO = :P216_DEPTNOAndy