Model availability inside ActionFilter

Posted by Sayed Ibrahim Hashimi on Stack Overflow See other posts from Stack Overflow or by Sayed Ibrahim Hashimi
Published on 2010-03-15T03:39:23Z Indexed on 2010/03/15 3:49 UTC
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Filed under:

asp.net-mvc

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actionfilter

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custom-model-binder

I have created a new ActionFilter for an ASP.NET MVC application that I'm creating. I have an action which accepts an Http Post and the argument of the action method accepts an object, for which I have created and registered a custom model binder.

I noticed that inside the IActionFilter.OnActionExecuting the value for filterContext.Controller.ViewData.Model is always null despite the fact that it looks like the model binder is always invoked before the action filter OnActionExecuting method. In contrast to this inside the IActionFilter.OnActionExecuted method of the same action filter the value for filterContext.Controller.ViewData.Model is not null.

Do you guys know if this is by design or a bug? If by design are their any links which describe why this is? Thanks.

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