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  • Dominic Kelly 114 posts 133 karma points
    Jan 12, 2012 @ 17:32
    Dominic Kelly
    0

    Increment CSS class?

    Hi all,

    I'm brand new to Umbraco, and from a PHP background.

    I'm trying to loop through some images, and increment a class on each li.

    <ul class="clearfix">
       @{int i = 0;}
       @foreach (var item in @Model.HomepageSlide)
       {
       <li id="content_@i">
           <div class="homepage-content-top clearfix">
           @item.homepageSliderCopy
           </div>
       </li>
       i++;
       }
     </ul>

    In short, I need content_@i to increment by 1 on each iteration. I can't get the syntax correct!

     

     

  • Barry Fogarty 493 posts 1129 karma points
    Jan 12, 2012 @ 17:45
    Barry Fogarty
    0

    Best thing is to join up your element ID variable like so:

    <ulclass="clearfix">
       @{
    int i = 0;

    string elementId;
    }
       @foreach (var item in @Model.HomepageSlide)
       {

    elementId = "content_" + i.ToString();
       <liid="@elementId">
           
    <divclass="homepage-content-top clearfix">
           @item.homepageSliderCopy
           
    </div>
       
    </li>
       i++;
       }
     
    </ul>

    @{
    int i = 0;
    string elementId = "content_" + i.ToString();
    }
    ...

       

    • Warren Buckley 2087 posts 4568 karma points MVP 6x admin hq c-trib
      Jan 12, 2012 @ 17:46
      Warren Buckley
      1

      Hi Dominic,
      You are very close and just a gotchya for the Razor syntax really.

      Where you use content_@i the Razor engine doesn't know if this supposed to be HTML/text/email address so parses it as a string rather than switching back to the code parser. The way to fix this is to change it to <div id="content_@(i)"> Using brackets () after the @ tells the parser anything inside this needs to be parsed as code.

      <ul class="clearfix">
          @{int i = 0;}
          
          @foreach (var item in @Model.Children)
           {
            <li id="content_@(i)">
              <div class="homepage-content-top clearfix">
                @item.Name
              </div>
            </li>
          
            i ++;
          }
      </ul>
      
    • Warren Buckley 2087 posts 4568 karma points MVP 6x admin hq c-trib
      Jan 12, 2012 @ 17:47
      Warren Buckley
      0

      Yep or you can do as Barry suggested and build your string up in a var first and then use that in your HTML

    • Barry Fogarty 493 posts 1129 karma points
      Jan 12, 2012 @ 17:49
      Barry Fogarty
      0

      Nice one Warren - your solution is more elegant didnt know about that razor bracket syntax!

    • Dominic Kelly 114 posts 133 karma points
      Jan 12, 2012 @ 17:51
      Dominic Kelly
      0
      content_@(i)

      Works, thanks!

    • Warren Buckley 2087 posts 4568 karma points MVP 6x admin hq c-trib
      Jan 12, 2012 @ 17:51
      Warren Buckley
      0

      This is a good little guide to Razor syntax
      http://haacked.com/archive/2011/01/06/razor-syntax-quick-reference.aspx  

    • Dominic Kelly 114 posts 133 karma points
      Jan 12, 2012 @ 17:56
      Dominic Kelly
      0

      Ah nice thanks. 

    • Gareth Evans 138 posts 329 karma points c-trib
      Jan 12, 2012 @ 23:17
      Gareth Evans
      1

      if Model.HomepageSlide returns a DynamicNodeList, you can do this:

      @foreach(var item in Model.HomePageSlide)
      {
      <li id="content_@item.Position">@item.Name</li>
      }

      If it doesn't, this is equiv to Warren's example but slightly shorter:

      @{
      var i = 0;
      foreach(var item in Model.HomePageSlide)
      {
      <li id="content_@(i++)">@item.Name</li>
      }

      The @(i++) returns i, and then increments it for the next loop pass.

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