How to value non-table items in Forms

Question

Portal 3.0.7.6.2 on NT
I am trying to display non-table items on a Form. I want to do things like: Display the Credit Card Type (non-table item) based on the Credit Card Number (table column). Use a foreigh key (table column) to retrieve related data for display/information only on the Form. The doesn't appear to be p_session variables for these 'added' Form items so I can't use the p_session functions. Any ideas??? I'd prefer a PL/SQL solution.

Answer 1

Hi Michael,
As Dmitry said that values for non table form field cannot be displayed completely using pl/sql, u can use some pl/sql and some javascript to achieve this .
Say, take the example of the Emp table where I would like to display the department name for the deptno. Here I'll use pl/sql to retrieve the value of department name using the deptno and use javascript to display the results in the new field added to the form.
Steps :
1> Create a form say, on the emp table
2> In the field formatting section, add a new item of the type text box and add a javascript event onFocus and give the foll javascript function call for the same :-
javascript:getval(this)
3> In the additional pl/sql section, for the "after displaying page ..." part we'll add the following pl/sql code :-
declare
l_dno number(4) default null;
l_desc varchar2(100);
begin
l_dno := p_session.get_value_as_NUMBER
(p_block_name => 'DEFAULT',
p_attribute_name => 'A_DEPTNO',
p_index => 1);
if l_dno is not null then
begin
select dname into l_desc
from scott.dept
where deptno = l_dno;
exception
when others then
null;
end ;
end if;
htp.p('<script>');
htp.p('function getval(ele){'&#0124; &#0124;chr(10)&#0124; &#0124;
'ele.value = "'&#0124; &#0124;nvl(l_desc,' ')&#0124; &#0124;'";}');
htp.p('</script>');
end;
4> Run the form and perform a query. Place the cursor on the desc field after the page reloads with results. The department name would come up.
Hope this helps.