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POException in Glass mapper for Sitecore in PageEditor mode
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  1. POException in Glass mapper for Sitecore in PageEditor mode
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    copied!<p>For the code:</p> <pre class="lang-cs prettyprint-override"><code>strMenuText.Append(RenderLink(mainlinkitem, x =&gt; x.NavigationItem.Url.StringToLink(), isEditable: true, contents: mainlinkitem.NavigationTitle)); </code></pre> <p>Here <code>mainlinkitem</code> is Navigation object for interface created for data template. I am using interfaces in this case and castle windsor creates dynamic proxy objects for this.</p> <p>Things work ok until I try to use Page editor mode and below error shows up from glass mapper api.</p> <blockquote> <p>Expression doesn't evaluate to a member x.NavigationItem.Url.StringToLink() at Glass.Mapper.Sc.GlassHtml.MakeEditable[T](Expression<code>1 field, Expression</code>1 standardOutput, T model, String parameters, Context context, Database database, TextWriter writer)</p> </blockquote> <p>Note: StringToLink is extension method for converting external url in <code>string</code> form to Glass mapper <code>Glass.Mapper.Sc.Fields.Link</code> type.</p> <pre class="lang-cs prettyprint-override"><code>public static Link StringToLink(this string urlvalue) { Link itemLink = new Link(); itemLink.Url = urlvalue; return itemLink; } </code></pre> <h2>UPDATE</h2> <p>Code for menu user control:</p> <pre class="lang-cs prettyprint-override"><code>public partial class MenuControl : GlassUserControl&lt;INavigationFolder&gt; { protected override void GetModel() { base.GetModel(); SiteLevelSettings siteSettings = SitecoreContext.GetItem&lt;SiteLevelSettings&gt;(Guid.Parse("Some GUID")); Model = siteSettings.HeaderMenuFolder; } protected void Page_Load() { if (!Page.IsPostBack) { LoadMenu(); } } private void LoadMenu() { StringBuilder strMenuText = new StringBuilder(); foreach (INavigationLink mainlinkitem in Model.ChildLinks) { if (CanRead(mainlinkitem)) { strMenuText.Append("&lt;td class='menu-item'&gt;"); if (mainlinkitem.ChildLinks != null &amp;&amp; mainlinkitem.ChildLinks.Count() &gt; 0) { strMenuText.Append("&lt;ul&gt;"); foreach (INavigationLink linkitem in mainlinkitem.ChildLinks) { if (CanRead(linkitem)) { strMenuText.Append("&lt;li&gt;"); if (linkitem.NavigationItem != null) { strMenuText.Append(RenderLink(linkitem, x =&gt; x.NavigationItem.Url.StringToLink(), isEditable: false, contents: linkitem.NavigationTitle)); } else if (linkitem.NavigationGeneralLink != null) { strMenuText.Append(RenderLink(linkitem, x =&gt; x.NavigationGeneralLink, isEditable: false, contents: linkitem.NavigationTitle)); } strMenuText.Append("&lt;/li&gt;"); } } strMenuText.Append("&lt;/ul&gt;"); } strMenuText.Append("&lt;div class='nav-divider'&gt;"); if (mainlinkitem.NavigationItem != null) { strMenuText.Append(RenderLink(mainlinkitem, x =&gt; x.NavigationItem.Url.StringToLink(), isEditable: false, contents: mainlinkitem.NavigationTitle)); } else if (mainlinkitem.NavigationGeneralLink != null) { strMenuText.Append(RenderLink(mainlinkitem, x =&gt; x.NavigationGeneralLink, isEditable: true, contents: mainlinkitem.NavigationTitle)); } strMenuText.Append("&lt;/div&gt;&lt;/td&gt;"); } } ltrMenu.Text = strMenuText.ToString(); } private bool CanRead(IItem mainlinkitem) { var ItemId = mainlinkitem.TemplateId; var ItemIDObj = new Sitecore.Data.ID(ItemId); var contentdatabase = Sitecore.Context.Database; var item = contentdatabase.GetItem(ItemIDObj); return item.Access.CanRead(); } } </code></pre> <p>Navigation Folder interface for glass mapper:</p> <pre class="lang-cs prettyprint-override"><code>[SitecoreType(TemplateId = "{Some GUID}")] public interface INavigationFolder : IItem { [SitecoreChildren(IsLazy = false)] IEnumerable&lt;INavigationLink&gt; ChildLinks { get; set; } } </code></pre> <p>Navigation Link interface for glass mapper:</p> <pre class="lang-cs prettyprint-override"><code>[SitecoreType(TemplateId = "{Some GUID}")] public interface INavigationLink : IItem { [SitecoreField(FieldId = "{Some GUID}")] string NavigationTitle { get; set; } [SitecoreField(FieldId = "{Some GUID}")] IItem NavigationItem { get; set; } [SitecoreField(FieldId = "{Some GUID}")] Link NavigationGeneralLink { get; set; } [SitecoreField(FieldId = "{Some GUID}")] string ShortDescription { get; set; } [SitecoreChildren(IsLazy = false)] IEnumerable&lt;INavigationLink&gt; ChildLinks { get; set; } } </code></pre> <p>Note: This will code will generate menu similar to sitecore site</p> <h2>UPDATE</h2> <p>Url property in interface <code>IItem</code> is defined as follows:</p> <pre><code>[SitecoreType(TemplateId = "{Some GUID}")] public interface IItem { [SitecoreId()] Guid ID { get; } [SitecoreInfo(Type = SitecoreInfoType.Language)] Language Language { get; } [SitecoreInfo(Type = SitecoreInfoType.Version)] int Version { get; } [SitecoreInfo(Type = SitecoreInfoType.Url)] string Url { get; } [SitecoreInfo(Type = SitecoreInfoType.TemplateId)] Guid TemplateId { get; } [SitecoreInfo(Type = SitecoreInfoType.Key)] string Key { get; } } </code></pre>
 

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