Sitecore的动态占位符允许效果图

Question

我实现动态占位符在Sitecore的7中的文章

• http://trueclarity.wordpress.com/2012/06/19/dynamic-placeholder-keys-in-sitecore/
• http://www.techphoria414.com/Blog/2011/August/Dynamic_Placeholder_Keys_Prototype

它是否正常工作，这样我可以添加相同的描述渲染到布局和渲染将出现在相应的动态占位符中。但是，当我单击以将动画添加到动态占位符时，占位符设置未被使用。

我期待的是提示可能放置在动态占位符上的允许渲染。而是呈现渲染/布局树来手动选择渲染 - 使内容编辑能够将不允许的渲染添加到占位符。

我已经调试了代码，并且正在为动态占位符找到正确的占位符设置项目，并且正在检索允许的渲染列表，尽管在args中设置了该列表未提供给用户。见下面的代码。

public class GetDynamicKeyAllowedRenderings : GetAllowedRenderings 
{ 
    //string that ends in a GUID 
    public const string DynamicKeyRegex = @"(.+){[\d\w]{8}\-([\d\w]{4}\-){3}[\d\w]{12}}"; 

    public new void Process(GetPlaceholderRenderingsArgs args) 
    { 
     Assert.IsNotNull(args, "args"); 

     // get the placeholder key 
     string placeholderKey = args.PlaceholderKey; 
     var regex = new Regex(DynamicKeyRegex); 
     Match match = regex.Match(placeholderKey); 

     // if the placeholder key text followed by a Guid 
     if (match.Success && match.Groups.Count > 0) 
     { 
      // Is a dynamic placeholder 
      placeholderKey = match.Groups[1].Value; 
     } 
     else 
     { 
      return; 
     } 

     Item placeholderItem = null; 
     if (ID.IsNullOrEmpty(args.DeviceId)) 
     { 
      placeholderItem = Client.Page.GetPlaceholderItem(placeholderKey, args.ContentDatabase, 
                  args.LayoutDefinition); 
     } 
     else 
     { 
      using (new DeviceSwitcher(args.DeviceId, args.ContentDatabase)) 
      { 
       placeholderItem = Client.Page.GetPlaceholderItem(placeholderKey, args.ContentDatabase, 
                   args.LayoutDefinition); 
      } 
     } 

     // Retrieve the allowed renderings for the Placeholder 
     List<Item> collection = null; 
     if (placeholderItem != null) 
     { 
      bool allowedControlsSpecified; 
      args.HasPlaceholderSettings = true; 
      collection = this.GetRenderings(placeholderItem, out allowedControlsSpecified); 
      if (allowedControlsSpecified) 
      { 
       args.CustomData["allowedControlsSpecified"] = true; 
      } 
     } 
     if (collection != null) 
     { 
      if (args.PlaceholderRenderings == null) 
      { 
       args.PlaceholderRenderings = new List<Item>(); 
      } 
      args.PlaceholderRenderings.AddRange(collection); 
     } 
    } 
} 

因为这些代码是为Sitecore的6.5/6.6开发的我不知道如果在跳转到Sitecore的7.0带来了影响代码的后半段的变化

Answer 1

我已经找到了问题的源头反编译Sitecore 7内核并查看默认的GetAllowedRenderings类。如果找到允许的渲染，ShowTree选项需要设置为false。看下面

public class GetDynamicKeyAllowedRenderings : GetAllowedRenderings 
    { 
     //string that ends in a GUID 
     public const string DynamicKeyRegex = @"(.+){[\d\w]{8}\-([\d\w]{4}\-){3}[\d\w]{12}}"; 

     public new void Process(GetPlaceholderRenderingsArgs args) 
     { 
      Assert.IsNotNull(args, "args"); 

      // get the placeholder key 
      string placeholderKey = args.PlaceholderKey; 
      var regex = new Regex(DynamicKeyRegex); 
      Match match = regex.Match(placeholderKey); 

      // if the placeholder key text followed by a Guid 
      if (match.Success && match.Groups.Count > 0) 
      { 
       // Is a dynamic placeholder 
       placeholderKey = match.Groups[1].Value; 
      } 
      else 
      { 
       return; 
      } 

      // Same as Sitecore.Pipelines.GetPlaceholderRenderings.GetAllowedRenderings from here but with fake placeholderKey 
      // i.e. the placeholder without the Guid 
      Item placeholderItem = null; 
      if (ID.IsNullOrEmpty(args.DeviceId)) 
      { 
       placeholderItem = Client.Page.GetPlaceholderItem(placeholderKey, args.ContentDatabase, 
                   args.LayoutDefinition); 
      } 
      else 
      { 
       using (new DeviceSwitcher(args.DeviceId, args.ContentDatabase)) 
       { 
        placeholderItem = Client.Page.GetPlaceholderItem(placeholderKey, args.ContentDatabase, 
                    args.LayoutDefinition); 
       } 
      } 

      List<Item> collection = null; 
      if (placeholderItem != null) 
      { 
       bool allowedControlsSpecified; 
       args.HasPlaceholderSettings = true; 
       collection = this.GetRenderings(placeholderItem, out allowedControlsSpecified); 
       if (allowedControlsSpecified) 
       { 
        // Hide the Layout/Rendering tree to show the Allowed Renderings 
        args.Options.ShowTree = false; 
       } 
      } 
      if (collection != null) 
      { 
       if (args.PlaceholderRenderings == null) 
       { 
        args.PlaceholderRenderings = new List<Item>(); 
       } 
       args.PlaceholderRenderings.AddRange(collection); 
      } 
     } 
    } 

这是一个由Sitecore 7带来的变化似乎。