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Re: ^ binding syntax usage
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Re: ^ binding syntax usage


  • Subject: Re: ^ binding syntax usage
  • From: Chuck Hill <email@hidden>
  • Date: Thu, 21 Jul 2011 12:30:09 -0700

On 2011-07-21, at 12:26 PM, Lachlan Deck wrote:

> Hi there,
>
> anyone remember when the '^' was introduced for component bindings and where the official docs are for it?

A very long time ago, it was in the printed WO docs from Apple if you remember that far back.  :-)

I have never used it with inline bindings, maybe ^$title?

>
> I'm obviously a little rusty on its usage as I can't make it work.
>
> e.g.,
> MainWrapper.wo:
> <...>
> <head>
> 	<wo:string value="$^title"/>
> </head>
>
> Main.wo:
> <wo:MainWrapper title="Foo bar">
> 	<...>
> </wo:MainWrapper>
>
> UnknownKeyException: [<com.webobjects.appserver.WOComponent name: MainWrapper subcomponents: null > takeValueForKey()]: attempt to assign value to unknown key: 'title'. This WOComponent does not have an instance variable of the name title or _title, nor a method of the name setTitle or _setTitle
>
> public class MainWrapper.java extends ERXStatelessComponent {...}
> public class Main.java extends ERXNonSynchronizingComponent {...}
>
> What am I missing?
>
> with regards,
> -
>
> Lachlan Deck
>
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--
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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