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From Christoph Nenning <Christoph.Nenn...@lex-com.net>
Subject Re: TextProvider, Validation and ModelDriven
Date Mon, 16 Sep 2013 10:54:21 GMT
> > when an application uses a custom TextProvider it seems not to be used 
for
> > validation errors. And if an Action is ModelDriven it behaves 
different
> > again.
> >
> > Here is a sample app for that:
> > https://github.com/wolpi/struts2-samples/tree/master/modeldriven-
> and-textprovider
> >
> >
> > This sample has these Objects on ValueStack:
> > - Model
> > - CustomTextProvider
> > - Action
> > - DefaultTextProvider
> >
> > In hello.jsp three texts are shown:
> > - Just a normal text via <s:text>. That text is resolved via
> > CustomTextProvider (as expected).
> > - A validation error of an action member. That text is resolved via 
the
> > action itself, what I would not expect.
> > - A validation error of a model member. That text is tried to be 
resolved
> > via DefaultTextProvider, what I would not expect either.
> >
> >
> > Am I doing something wrong here?
> 
> Have you tried to use the extension point: struts.xworkTextProvider ?
> 
> http://struts.apache.org/development/2.x/docs/plugins.html#Plugins-
> ExtensionPoints
> 
> 

that changed things, but it is still not used for ModelDriven validation 
errors.


Here is what I have done:
- Registered CustomTextProvider in struts.xml:
        <bean name="customTextProvider"
                scope="default"
                type="com.opensymphony.xwork2.TextProvider" 
                class=
"struts2.samples.modeldrivenandtextprovider.actions.CustomTextProvider" /> 

        <constant name="struts.xworkTextProvider"
                value="customTextProvider" />
- Removed it from ValueStack
- Removed TextProvider methods from action
(see git history)



This gave:
- CustomTextProvider is used for <s:text>
- CustomTextProvider is used for validaton errors of action members
- CustomTextProvider is not used for validaton errors of model members



Regards,
Christoph

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