On Dec 8, 2008, at 1:35 PM, David Holt wrote:
Hi all,
Is there a way for me to add an object to a to many relationship
(list of objects) without leaving the page or representing the
newObject both in the list and in the edit interface?
For example:
Meeting edit page
Attendees:
John
Mary
Edward
add new attendee(button)
When you hit the "add new attendee" button you get the new person
object displayed in both the list and associated with the edit
interface.
John
Mary
Edward
(new person)
name: (new person)
(save) (cancel)
The attendee has a mandatory meeting relationship, so it is added to
the meeting upon creation. The new object is displayed as the final
object in the to many relationship even before saveChanges is called
on the editingContext. Is it possible to show only the objects in
the relationship that have already been saved to the database and
the newly created (but not yet saved) object separately?
Normally I would add the attendee on a separate page and on save
come back to the original meeting page but I would like to eliminate
some jumping around if possible.
1. Create and insert the EO to be added, but don't add it to the
relationship. Only add once the user clicks save and you validate it.
2. Use a child (nested) ec. The new EO won't appear in the parent
until the user saves. You will need to save again on the parent to
make it persistent.
3. Same as 2 but use a peer EC, only one save is needed.
Chuck
--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
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