Re: WOPopUpButton - list & selection not working
Re: WOPopUpButton - list & selection not working
- Subject: Re: WOPopUpButton - list & selection not working
- From: Jonathan Rochkind <email@hidden>
- Date: Thu, 20 Feb 2003 10:49:51 -0600
If 'list' is bound to an NSArray of objects with class Category, then
'selection' should be bound to a variable of class Category as well.
After the form is submitted, the selection-bound variable will contain the
Category object that the user selected in the popup.
Under normal conditions, you probably shouldn't use the selectedValue
binding at all. But you will probably be interested in the displayString
binding, to have a reasonable string in the popup menu, instead of simply
the toString() representation of each Category.
Hope this helps,
--jonathan
At 11:31 PM 2/19/2003 -0500, Thomas Peters wrote:
WOPopUpButton
list
Array of objects from which the WOPopUpButton derives its values.
selection
Object that the user chose from the selection list. For the college example,
selection would be a college object.
selectedValue
Value that is used with direct actions to specify which option in the listis
selected.
The only documentation I can find is in the PDF under the DynamicELements
directory. I have also review the example in 'PetStoreWOJava' where the
'UpdateAccount.wo' contains 2 WOPopUpButton for states and countries.
I have products and categories, where categories is a parent object to
products. Category is defiled as a category_id and a category_name. The stored
value is category_id and the displayed value is category_name.
I can't seem to get the bindings right for this, or I just do not understand
how it works. I have set the list binding to an NSArray containing the
categories. I have set the selection to the product.category_id. This follows
the pattern exemplified in the example, but throws an exception because
'selection' binding returns the DisplayedValue of the WOPopUpButton. What am I
doing wrong?
Tom
_______________________________________________
webobjects-dev mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/webobjects-dev
Do not post admin requests to the list. They will be ignored.
_______________________________________________
webobjects-dev mailing list | email@hidden
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/webobjects-dev
Do not post admin requests to the list. They will be ignored.