What I see if we need this nice view render we need to make HtmlHelper
& FormHelper aware of ModelState, ModelStateDictionary etc.
Just wonder if anyone find this feature interesting because I am
willing to implement it for MonoRail.

On Apr 1, 3:25 am, Alex Henderson <[email protected]> wrote:
> Also as Rafael said - it tends to be a lot easier to mutate the model state
> in filters or code before the view gets a hold of it when compared to
> monorail... i.e. I dont think in monorail you can easily manipulate the
> ErrorSummary instances to remove an error (but you can replace the error
> sumary entirely, so it's not impossible)... but with ModelState it's a
> little easier.
>
> Technically that's more of an issue with Castle.Components.Validator then
> monorail though - and there are generally ways to work around this in
> monorail because the validator component is being used...
>
> Thoughts?
>
> On Wed, Apr 1, 2009 at 9:15 AM, Alex Henderson <[email protected]>wrote:
>
> > ModelState really just allows you to ask questions like "is everything
> > valid" and to iterate across the state of "action" as a whole looking for
> > errors which may have occured - basically it's a big dictionary... so in
> > your controller you can check to see if everythings ok..
>
> > if (ModelState.IsValid) { .... }
>
> > Or you could add an error for a certain parameter...
>
> > ModelState.AddModelError("customer.Address.Street", "Street is a required
> > value");
>
> > ModelState is a property of the controller, of type "ModelStateDictionary"
> > ... and it really is just a dictionary of strings to instances of
> > "ModelState"...  ModelState stores a list of exceptions/errors
> > (ModelErrorCollection) and the Value (ValueProviderResult).
>
> > ValueProviderResult provides access to the raw value returned from the
> > binder, as well as what culture was used to create the raw value.
>
> > It's not really all that different to monorail - they just invert it so
> > that state is associated with the key, rather then having seperate
> > validation summaries per object - you could probably a tailor a wrapper over
> > the top of monorails current implementation to emulate the model state
> > behavior to a degree.
>
> > I've only done one ASP.Net MVC project so far as well, but I'm not sure
> > they had an equivalent to monorails simple errors collection available for
> > managing errors not associated with the current form that you would like to
> > display in a validation summary.. but I could be wrong, I never needed that
> > feature at the time.
>
> >http://msdn.microsoft.com/en-us/library/system.web.mvc.modelstatedict...
>
> >http://msdn.microsoft.com/en-us/library/system.web.mvc.modelstate_mem...
>
> >http://msdn.microsoft.com/en-us/library/system.web.mvc.modelerrorcoll...
>
> >http://msdn.microsoft.com/en-us/library/system.web.mvc.modelerror_mem...
>
> >http://msdn.microsoft.com/en-us/library/system.web.mvc.valueproviderr...
>
> > Cheers,
>
> >  - Alex
>
> > On Wed, Apr 1, 2009 at 1:23 AM, Rafael Teixeira <[email protected]> wrote:
>
> >> No, it is the pattern I've been using for decades of having the various
> >> validators collect together their complaints about the input, so that they
> >> can be rendered at once in the view.
> >> Monorail also can do that, but the good thing is that the ModelState can
> >> be further manipulated in a easy way before being handed out to the view
> >> engine, which I think is just a bit more difficult in Monorail, but maybe
> >> it's just my ignorance on the subject.
>
> >> Cheers,
>
> >> On Tue, Mar 31, 2009 at 8:18 AM, Markus Zywitza <[email protected]
> >> > wrote:
>
> >>> Is this ViewState for MVC?
>
> >>> 2009/3/30 c.sokun <[email protected]>
>
> >>>> Have anyone look into ASP.NET <http://asp.net/> MVC ModelState feature?
>
> >> --
> >> Rafael "Monoman" Teixeira
> >> ---------------------------------------
> >> "I myself am made entirely of flaws, stitched together with good
> >> intentions."
> >> Augusten Burroughs
>
>
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