[Flow] The given object is unknown to the Persistence Manager > forward a request with empty object as parameter

[Axel Wüstemann]

Hi there,

I have this scenario:

I have an form in new or editAtion with an object that has a OneToMany 
relation: the parent object extended by fields, ordered into rows for 
the child objects.

Initially, in newAction I give 5 empty children, so the user can fill 
them. In both, at new and editAction, there is a button by wich the user 
can add more rows for children.

If this button is pressed, I switch the form action of the new/editForm 
from 'create/update' to 'addField' using jQuery.

In the addField action I add the appropriate count of empty child 
objects the user requested. Then I forward to where I came from.

With edit this works fine, with new I get the error: "The given object 
is unknown to the Persistence Manager".

Yes, the object has never been persisted before. How can I treat with that?

1. Is there a solution within Flow to allow forwarding empty objects?

or alternatively

2.Do  I need to store this object first an then forward to the update 
action, instead back to newAction?

But the 2. seems also to bring me up some trouble.

If I do

$this->fooRepository->add($bar);

before forwarding back to the newAction (or even editAction), I will get

"The identity property "74872" is neither a string nor an array."

Thank you for any hint


Axel