Master-Detail and Auto Insert Detail rows

Question

Apex 3.0
I'm trying to do a Master-Detail form. I have it set to stay on the same page when I Create a new Master Record.
Now, what I would like to do is auto insert data into the Detail Rows some predefined information and have it ready for the user to enter the rest of the information. I did this by creating a Page Process to trigger on the Add Row button for the Details region. The code I used is:
begin
insert into purch_insurance_type (Contract_ID, INSURANCE_TYPE) values(:P7_Contract_ID, 'General');
insert into purch_insurance_type (Contract_ID, INSURANCE_TYPE) values(:P7_Contract_ID, 'Automobile');
insert into purch_insurance_type (Contract_ID, INSURANCE_TYPE) values(:P7_Contract_ID, 'Excess');
insert into purch_insurance_type (Contract_ID, INSURANCE_TYPE) values(:P7_Contract_ID, 'Workers Comp');
insert into purch_insurance_type (Contract_ID, INSURANCE_TYPE) values(:P7_Contract_ID, 'Others (Builders Risk)');
end;
P7_Contract_ID is the PK on the Master table and I predefine the Insurance Type. The rest of the table the user is able to enter as needed.
When I run it, the new rows show up but the Insurance Type is NULL and browsing from one record and back the new rows are gone. It seems like the PK for the Detail rows are not being filled. I have a Sequence Trigger set to fire on Update:
CREATE OR REPLACE TRIGGER "BI_PURCH_INSURANCE_TYPE"
before insert on "PURCH_INSURANCE_TYPE"
for each row
begin
if :NEW."INSURANCE_TYPE_ID" is null then
select "PURCH_INSURANCE_TYPE_SEQ".nextval into :NEW."INSURANCE_TYPE_ID" from dual;
end if;
end;
ALTER TRIGGER "BI_PURCH_INSURANCE_TYPE" ENABLE
What am I missing? Any ideas or suggestions?

Answer 1

Hi All!
I think there is no solution to this problem, only single selection is the solution.
If any one has anyother solution plz let me know.
Thanks and regards.
Abbasi