Try our conversational search powered by Generative AI!

Anders Hattestad
Aug 6, 2013
  8394
(0 votes)

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

Comments

Henrik Fransas
Henrik Fransas Dec 11, 2013 02:44 PM

Any thoughts on how to do this in a MVC enviroment?

Jan 23, 2014 10:10 AM

I am also curious about the MVC way although it is possible to use "classic" usercontrols in MVC. I see that the Datafactory is used, shouldn't the Servicelocator be used instead? I have the idea the datafactory will be fased-out at some point.

Unknown
Unknown Nov 21, 2014 03:59 AM

If you have a model such as SitePageData in the Alloy example site from which all other page models inherit then you can do something like this
(Works for me)

[Display(
GroupName = SystemTabNames.Settings,
Order = 305)]
[CultureSpecific]
public virtual string SiteSection
{
get
{
return GetInheritedSection(this);
}
set { this.SetPropertyValue(p => p.SiteSection, value); }

}
public string GetInheritedSection(SitePageData page)
{
string result = page.GetPropertyValue(p => p.SiteSection);
if (string.IsNullOrWhiteSpace(result))
{
if (page.ParentLink != null)
{
SitePageData parent = EPiServer.DataFactory.Instance.GetPage(page.ParentLink) as SitePageData;
if (parent != null)
{
result = GetInheritedSection(parent);
}
}
}
return result;
}

Please login to comment.
Latest blogs
Visitor Groups Usage Report For Optimizely CMS 12

This add-on offers detailed information on how visitor groups are used and how effective they are within Optimizely CMS. Editors can monitor and...

Adnan Zameer | Apr 18, 2024 | Syndicated blog

Azure AI Language – Abstractive Summarisation in Optimizely CMS

In this article, I show how the abstraction summarisation feature provided by the Azure AI Language platform, can be used within Optimizely CMS to...

Anil Patel | Apr 18, 2024 | Syndicated blog

Fix your Search & Navigation (Find) indexing job, please

Once upon a time, a colleague asked me to look into a customer database with weird spikes in database log usage. (You might start to wonder why I a...

Quan Mai | Apr 17, 2024 | Syndicated blog

The A/A Test: What You Need to Know

Sure, we all know what an A/B test can do. But what is an A/A test? How is it different? With an A/B test, we know that we can take a webpage (our...

Lindsey Rogers | Apr 15, 2024