Using Call_Form - want to retain data in existing calling Form

Question

Hi All,
I would be grateful for assistance with the following scenario:
Form A calls Form B and when user presses 'SAVE' (not to commit to the database) button in Form B then customer
wants the program to return to Form A, commit current pending changes on Form A and then
return to Form B and commit changes there.
At the moment when the program goes back to Form A then understandably When New Form instance
fires and the program will retrieve records from the database however that is not what I want. I want the
records on the Form to be that which they were prior to calling Form B and as such for a commit to be applied
to these added/changed records.
Then, likewise I can call Form B but again I want the current records on Form B to then be applied to the
database.
I don't want to use EXIT_FORM in Form B to go back to Form A because the changes in Form B will be lost and
I don't want to commit changes in Form B prior to committing changes in Form A due to business reasons that the
customer has given.
So really I was just wondering if either with Call_Form or another method there was a way of retaining the data on
the calling form when calling another form?
Your help would be much appreciated.
Kind Regards

Answer 1

At the moment when the program goes back to Form A then understandably When New Form instance firesNo, it does not. Control goes exactly to the codeline after the CALL_FORM
But anyway, your scenario will not work the way you have it now. If you want to return from B to A you will have to do an EXIT_FORM and therefore loose all outstanding changes in Form B.
Two possible solution i can think of:
1. Merge the two forms into one and make the items of Form B appear in a different window. For the user it will look the same, but you can issue one COMMIT_FORM and both changes will be applied. I would go with this approach
2. Issue a POST in Form A before calling Form B. Then, if users saves in Form B, issue another POST and set some flag. When returning to Form A, check that flag and issue a COMMIT_FORM to make changes permanently. If Form B is left without saving you may have to do a ROLLBACK or leave the form with EXIT_FORM(ROLLBACK);