NSArrayController contentArray and add bindings
NSArrayController contentArray and add bindings
- Subject: NSArrayController contentArray and add bindings
- From: email@hidden
- Date: Fri, 22 Jul 2005 11:44:51 +0200
Let's suppose I have two entitites: department and
employee.
I have a master interface for listing all departments in a
table with add/remove buttons. No more that a department
may be selected at a time. The employee entity as a
one-relationship to department and the department entity
has a to-many inverse relationships to employees.
Now I add a master interface for employee entities (a
table and two buttons add/remove), BUT I want to display
only the employees assigned to the selected department. No
problem: I create a NSArrayController with a contentSet as
selection.employees [Department Array Controller]. The
problem is "How can I implement the Add button so that any
new employee is automatically assigned to the selected
department ?" In fact, if I press Add, the department
relationship is set to nil by default and automatically
the new added item is not displayed since it doesn't
belong to the selected department.
The problem arises since I don't know how to correctly
set the value of the department relationship of the
employee entity. Is it possible to do this non
programmatically ?
Matteo Rossi
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