First things first:
- Please log the bugs in our bug tracking website and provide breaking
sample or unittest

Cheers
John


On Feb 16, 7:48 am, Tomek Pluskiewicz <[email protected]> wrote:
> Thank you for replying
>
> By extension I certainly mean extension, not filter ;)
>
> I would like to help with those issues. I could try in some spare, but
> that will come later.
>
> For the ActionHelper+UrlInfo I would need some guidelines. Where would
> I grab necessary parameters for UrlInfo constructor?
>
> Tomasz
>
> On 15 Lut, 01:16, John Simons <[email protected]> wrote:
>
> > Tomek,
>
> > So that I'm sure we are talking about the same thing, when you refer
> > to Extension do you mean this 
> > -http://www.castleproject.org/monorail/documentation/v20/advanced/exte...
> > Or do you mean a filter? 
> > -http://www.castleproject.org/monorail/documentation/v20/usersguide/fi...
>
> > Cheers
> > John
>
> > On Feb 14, 2:09 am, Tomek Pluskiewicz <[email protected]> wrote:
>
> > > Hi
>
> > > Today I've experienced a weird behaviuor from MonoRail while using
> > > elements mention in the topic.
>
> > > Imagine the following:
> > > 1. I have a custom extension, which loads menu items from
> > > configuration and then uses UrlHelper to build links for those items.
> > > 2. On one of the pages I use ActionHelper's Render method
> > > 3. The whole thing explodes inside Controller#DisposeFilters() with
> > > NullReferenceExpception
>
> > > I spent some time looking into that issue and it seems the problem
> > > lies inside ActionHelper.
> > > 1. ActionHelper creates UrlInfo without supplying AppVirtualDir, which
> > > causes UrlBuilder to fail inside extension
> > > 2. Because extensions fire before other MonoRail steps, the disposing
> > > of Controller happens before it has been contextualized
> > > 3. The above is the reason of NullRefereneException (the null is in
> > > fact Controller#context)
>
> > > There are a few weak spots I thnk should be fixed:
> > > 1. Dispose should be invulnerable to NullReferenceException. Extension
> > > failing is a good reason not to assume, that all Controller's
> > > properties will be set. Other solution would be actually
> > > contextualizing *before* anything could go wrong
> > > 2. Another UrlInfo constructor should be used for ActionHelper. That
> > > is the direct reason for my problem. I'm not sure how to supply all
> > > the required parameters correctly though.
> > > 3. Last issue is exception handling inside MonoRail, which hasn't just
> > > once failed me. This is not the first time I've encountered MonoRail
> > > display not the actual exception, which tends to be quite misleading.
> > > It took me quite a lot of digging to figure out what's going on.
>
> > > On the other hand thank god MR is open source. I doubt I would be able
> > > to find my solution for a simmilari issue with ASP.NET... ;)

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