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Anders Hattestad
Anders Hattestad
Aug 6, 2013
  5689
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Using Page Properties as dynamic properties in EPiServer 7

Dynamic properties was great for having properties that is inherit. But the new interface of EPiServer 7 makes this a bit difficult. One solution is to modify the EPiServer: Property code so it allows for finding the property that have value up in the page structure. And if the Property exist on the page allow the editor to add values to the current property and break the inherit chain.

The code is simple. Find the first property (can be a page block) that have value and display that

Code Snippet
  1. public class PropertyInherit : EPiServer.Web.WebControls.Property
  2. {
  3.     protected override void CreateChildControls()
  4.     {
  5.         try
  6.         {
  7.             InnerProperty = FindInheritBlock(PageSource.CurrentPage, PropertyName);
  8.             if (!InnerProperty.IsNull && PageSource.CurrentPage.Property[PropertyName] != null && PageSource.CurrentPage.Property[PropertyName].IsNull)
  9.             {
  10.                 //Is using inherit isUsingInherit = true;
  11.             }
  12.             if (PageSource.CurrentPage.Property[PropertyName] != null)
  13.             {
  14.                 this.Editable = true; //Property exist on current page, make it editable
  15.             }
  16.             base.CreateChildControls();
  17.  
  18.         }
  19.         catch
  20.         {
  21.             AddLiteral("Error in PropertyInherit");
  22.         }
  23.  
  24.     }
  25.     protected PropertyData FindInheritBlock(PageData page, string key)
  26.     {
  27.         var prop = page.Property[key];
  28.         if (prop != null && !prop.IsNull)
  29.         {
  30.             return prop;
  31.         }
  32.         if (PageReference.RootPage.CompareToIgnoreWorkID(page.PageLink))
  33.             return null;
  34.         return FindInheritBlock(EPiServer.DataFactory.Instance.GetPage(page.ParentLink), key);
  35.     }
  36.       
  37.     Literal AddLiteral(string key)
  38.     {
  39.         var lit = new Literal() { ID = key };
  40.         this.Controls.Add(lit);
  41.         return lit;
  42.     }
  43. }

If you have page block SideBarImage with no data, but the parent page have data it will display

image 

but when you try to edit it it will be empty

image

if you go to the parent page and try to edit it it will have data of course Smilefjes

 

image

You will need to register you new web control

Code Snippet
  1. <httpRuntime requestValidationMode="2.0" />
  2. <pages validateRequest="false" enableEventValidation="true" pageParserFilterType="System.Web.Mvc.ViewTypeParserFilter, System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
  3.   <controls>
  4.     <add tagPrefix="Itera" namespace="Itera.WebControls" assembly="Itera" />

And you can use it like this

Code Snippet
  1. <Itera:PropertyInherit runat="server" PropertyName="SidebarImage" id="SidebarImage1" />
Aug 06, 2013

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