Hi Guys,

 

Trying out the new Razor syntax in umbraco 4.6.1.

Really excited to start doing this - am quite fluent with XSLT but I don't like how it reads, especially when you start getting pretty complex with <xsl:attribute> and <xsl:choose>

 

Trying to render this HTML snippet with Razor

<ul>

<li><a href="url">name</a></li>

<li><a href="url">name</a></li>...

<li class="last"><a href="url">name</a></li>

</ul>

 

 

Because we want to know the position (to do class="last"), we've tried a few different techniques just playing around.

First we were wondering how to calculate the position when using @ForEach

The only way we could find to do this was 

 

var i = 0;

@ForEach(var page in Model.Children)

{

 

i++; //now i contains position() [from xslt]

}

 

However, we'd need to know the length to be able to check i against this.

 

Model.Children.length doesn't work, 

 

Here's our usings

 

@using System;

@using System.Collections.Generic;

@using System.Linq;

@using System.Web; 

 

And when we try this:

 

@Model.Children.ElementAt(2)

 

we get:

Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: 'object' does not contain a definition for 'ElementAt' at CallSite.Target(Closure , CallSite , Object , Int32 ) at System.Dynamic.UpdateDelegates.UpdateAndExecute2[T0,T1,TRet](CallSite site, T0 arg0, T1 arg1) at RazorEngine.Dynamic.fcddcebbcff.Execute() at RazorEngine.Templating.TemplateService.Parse[T](String template, T model, String name) at umbraco.MacroEngines.RazorEngine.GetResult(String cacheIdentifier, String template, INode currentPage, String& result)

 

This suggests that @Model.children is IEnumerable<object> or List<object> but cast into object (the list itself is object)

 

If we try this:

 

@Model.Children.Count()

 

we get a similar error:

Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: 'object' does not contain a definition for 'Count' at CallSite.Target(Closure , CallSite , Object ) at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0) at RazorEngine.Dynamic.bdabbedd.Execute() at RazorEngine.Templating.TemplateService.Parse[T](String template, T model, String name) at umbraco.MacroEngines.RazorEngine.GetResult(String cacheIdentifier, String template, INode currentPage, String& result)

 

Pretty sure the same would apply for .length & friends.

 

Have tried casting Children to a List<DynamicNode> 

 

@(((List<DynamicNode>Model.Children).Count())

 

that gives:

error CS0305: Using the generic type 'System.Collections.Generic.List' requires 1 type arguments

error CS0103: The name 'DynamicNode' does not exist in the current context

 

So we'll add a namespace:

 

@(((List<umbraco.MacroEngines.DynamicNode>Model.Children).Count())

 

this gives:

error CS0305: Using the generic type 'System.Collections.Generic.List' requires 1 type arguments

error CS0119: 'umbraco.MacroEngines.DynamicNode' is a 'type', which is not valid in the 

given context

 

Have also tried the above examples with

@Model.textPages.ElementAt(2) and friends; 

where textPages is the document type alias

 

The only thing we could get to work is this:

@{

var list = new List<umbraco.MacroEngines.DynamicNode>();

foreach(var item in Model.Children)

{

   list.Add(item);

}

 

@list.Count()

@list.ElementAt(2).Name

@list.ElementAt(2).Url

 

That is to say, copying the list using a foreach into a defined list with type, then all the methods we expect work.

Obviously, we could now combine this with another foreach loop, i++ etc and check the length.

 

Finally, the last thing we were wondering, though this is probably something for another post is can anyone think of a way we can use Partial Views, that is; a way to store a block of HTML somewhere and then reuse it either within that page or within multiple pages?

Sort of like we'd do with named templates and xslt include.

I suppose we could define a function that accepts a dynamic node and then call that function? Probably wouldn't work cross-template though.

 

Thanks in advance

 

Gareth