Set default value in master block of MD form

Question

I am finding it impossible to put a default value in a field in
the master block of an MD form. It is essential to limit my
users' queries to their own account. I get an error when I try
to put a default value in, and I can't get it to respond to
p_session.set_value in the query PLSQL section. The form appears
on a subpage, so I can't call it with parameters. Anyone have
any ideas? Has anyone else experienced this limitation with
MDforms?
Karli

Answer 1

Mike,
Thanks for your reply.
First I just tried setting the default value for the field
client_id (as a function returning a number) in the options box
of the form builder. This works for my other forms, but here it
gives me the following messages:
Exception from wwv_generate_component.build_procedure (WWV-01821)
Error creating module: ORA-06502: PL/SQL: numeric or value
error: character string buffer too small (WWV-16042)
Error creating module: ORA-06502: PL/SQL: numeric or value
error: character string buffer too small (WWV-16042)
Error adding module attributes: ORA-06502: PL/SQL: numeric or
value error: character string buffer too small (WWV-16043)
I tried setting the default as a number, 2, and got the same
message. Therefore I decided to work around it, and just set the
value before Querying, as follows:
declare v_survey number;
begin
v_client := 2;
p_session.set_value(
p_block_name => 'MASTER_BLOCK',
p_attribute_name => 'A_CLIENT_ID',
p_value => v_client
end;
doQuery;--- This is the default handler
(NOTE: I actually have a function that I want to call to set the
default. I just used the number 2 to eliminate any unnecessary
complexity while troubleshooting.)
This code had no effect. I get no errors, but when the query is
run, it ignores my attempt to set the value of the attribute. I
suspected that perhaps this was because the doQuery procedure
resets or ignores the master value appearing in an MDform, so I
tried commenting out 'doQuery;' - It did not even put the value
into the form. What am I missing?
Karli