asp.net – 具有MVC的Sitecore’动态占位符’

我正在寻找一个在MVC中工作的动态占位符解决方案。
对于WebForms使用这个“模式”至少有两个很好的描述：

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

而且我也发现这个博客解释了如何使用MVC：

> http://blogs.perficient.com/portals/2012/10/17/sitecore-mvc-dynamic-placeholders/

首先，我尝试使用MVC blogpost(SitecoreHelper的扩展)中的技术来实现Techphoria的方法(使用GUID)，我也尝试实现最后描述的方法(使用增加Column_1，Column_2等的数字后缀)。

随着我尝试的所有变化，我没有成功创建一个工作的解决方案。我的占位符没有得到正确的命名(我最终以奇怪的占位符结构，或占位符重复)。

没有进入我的尝试的细节，我想知道其他人是否有一个可以使用的工作解决方案。

如果我找不到一个已经在工作的解决方案，我会更详细的描述我的问题，看看能不能让它工作。

解决方法

我创建了这个扩展，创建动态的placholder

public static class SitecoreHelper
{
    public static HtmlString DynamicPlaceholder(this Sitecore.Mvc.Helpers.SitecoreHelper helper,string dynamicKey)
    {
        var currentRenderingId = RenderingContext.Current.Rendering.UniqueId;
        return helper.Placeholder(string.Format("{0}_{1}",dynamicKey,currentRenderingId));
    }
}

它以名称创建了一个占位符。
我还创建了一个提取guid的流程，并检查占位符设置。

获取动态占位符的占位符设置的代码
如果您使用@ Html.Sitecore()创建动态占位符。DynamicPlaceholder(“test”) – 以下代码从名为test的占位符设置中获取设置

/// <summary>
/// Handles changing context to the references dynamic "master" renderings settings for inserting the allowed controls for the placeholder and making it editable
/// </summary>
public class GetDynamicKeyAllowedRenderings : GetAllowedRenderings
{
    //text that ends in a GUID
    private const string DYNAMIC_KEY_REGEX = @"(.+)_[\d\w]{8}\-([\d\w]{4}\-){3}[\d\w]{12}";

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

        string placeholderKey = args.PlaceholderKey;
        Regex regex = new Regex(DYNAMIC_KEY_REGEX);
        Match match = regex.Match(placeholderKey);
        if (match.Success && match.Groups.Count > 0)
        {
            placeholderKey = match.Groups[1].Value;
        }
        else
        {
            return;
        }
        // Same as Sitecore.Pipelines.GetPlaceholderRenderings.GetAllowedRenderings but with fake placeholderKey
        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.LayoutDeFinition);
            }
        }
        List<Item> collection = null;
        if (placeholderItem != null)
        {
            bool flag;
            args.HasPlaceholderSettings = true;
            collection = this.GetRenderings(placeholderItem,out flag);
            if (flag)
            {
                args.CustomData["allowedControlsspecified"] = true;
                args.Options.ShowTree = false;
            }
        }
        if (collection != null)
        {
            if (args.PlaceholderRenderings == null)
            {
                args.PlaceholderRenderings = new List<Item>();
            }
            args.PlaceholderRenderings.AddRange(collection);
        }
    }
}

以下代码会从裁剪器中的chrome数据中删除guid

/// <summary>
/// Replaces the displayname of the Placeholder rendering with the dynamic "parent"
/// </summary>
public class GetDynamicPlaceholderChromeData : GetChromeDataProcessor
{
    //text that ends in a GUID
    private const string DYNAMIC_KEY_REGEX = @"(.+)_[\d\w]{8}\-([\d\w]{4}\-){3}[\d\w]{12}";

    public override void Process(GetChromeDataArgs args)
    {
        Assert.ArgumentNotNull(args,"args");
        Assert.IsNotNull(args.ChromeData,"Chrome Data");
        if ("placeholder".Equals(args.ChromeType,StringComparison.OrdinalIgnoreCase))
        {
            string argument = args.CustomData["placeHolderKey"] as string;

            string placeholderKey = argument;
            Regex regex = new Regex(DYNAMIC_KEY_REGEX);
            Match match = regex.Match(placeholderKey);
            if (match.Success && match.Groups.Count > 0)
            {
                // Is a Dynamic Placeholder
                placeholderKey = match.Groups[1].Value;
            }
            else
            {
                return;
            }

            // Handles replacing the displayname of the placeholder area to the master reference
            Item item = null;
            if (args.Item != null)
            {
                string layout = ChromeContext.GetLayout(args.Item);
                item = Sitecore.Client.Page.GetPlaceholderItem(placeholderKey,args.Item.Database,layout);
                if (item != null)
                {
                    args.ChromeData.displayName = item.displayName;
                }
                if ((item != null) && !string.IsNullOrEmpty(item.Appearance.ShortDescription))
                {
                    args.ChromeData.ExpandeddisplayName = item.Appearance.ShortDescription;
                }
            }
        }
    }
}

编辑

web.config包含的设置包括如下：

<sitecore>
  <pipelines>

    <getPlaceholderRenderings>
      <processor 
        type="YourNamespace.Pipelines.GetPlaceholderRenderings.GetDynamicKeyAllowedRenderings,YourAssembly"
        patch:before="processor[@type='Sitecore.Pipelines.GetPlaceholderRenderings.GetAllowedRenderings,Sitecore.Kernel']"/>
    </getPlaceholderRenderings>

    <getChromeData>
      <processor
        type="YourNamespace.Pipelines.GetChromeData.GetDynamicPlaceholderChromeData,YourAssembly"
        patch:after="processor[@type='Sitecore.Pipelines.GetChromeData.GetPlaceholderChromeData,Sitecore.Kernel']"/>
    </getChromeData>

  </pipelines>
</sitecore>