This is what I feared : I have to copy manually the object from the
editing context to the main one.
What will happen with relationships ? Let's say we have a one-to-one
relationship between the Product entity and the Family entity and that
the user did affect a family (from the editing context) to the newly
created product (also in the editing context). How am I supposed to
establish the relationship back when I copy my product object to the
main context ? And what will happen if there is a one-to-many
relationship between the two entities ? Even worse : what f I want to
allow the user to create new families on the editing sheet and he
establish relationships between the object, the newly created families
and some families that were already in the main context ?
Is this really the only solution ? It virtually destroy the whole
"scratchpad" concept since it makes using contexts as scratchpad very
difficult and error-prone with anything else than the simplest cases,
like the one in the Apple tutorial.
Eric.
Le 6 nov. 2009 à 17:16, mmalc Crawford a écrit :
On Nov 6, 2009, at 8:09 am, Eric Morand wrote:
For example, let say that I want to be able to use a new context to
deal with the creation of a new "product". I create a new editing
context, insert a new product, open a new window and let the user
fill the fields and click on Submit or Cancel. If the user clicks
on Cancel, I release the editing context, if the user clicks on
submit, I want to merge it with the 'main' context. That's where
I'm stuck : how am I supposed to merge both contexts ?
