Lets say I have a Person model and Phones that belong to that model. I add more phones using subforms (nested).

And now when I add a Phone, a phone object is saved in my database. If I close the Person model form without saving, the phone shouldn't be saved. How can I prevent this?

I don't think this can be prevented.

Last updated 4 years ago

The only way I see is if you attached an ajax handler to your Create Form's "Cancel" button and within that ajax handler, you would purge records for the relation that have a NULL key for the parent model.