feat(Helpers): Add an extension that allows to get the contents of an…

…y IContainer.

Helpers/Content/ContentManagerExtensions.cs

@@ -0,0 +1,24 @@
+namespace Orchard.Tools.Helpers.Content {
+    using System.Collections.Generic;
+    using Orchard.ContentManagement;
+    using Orchard.ContentManagement.Records;
+    using Orchard.Core.Common.Models;
+    using Orchard.Core.Containers.Models;
+
+    public static class ContentManagerExtensions {
+        /// <summary>
+        /// Queries the database for the given container and returns a list of the container contents with the specified Part.
+        /// </summary>
+        public static IEnumerable<TPart> GetContainerContentsOfType<TPart, TRecord>(this IContentManager contentManager, int containerId, VersionOptions versionOptions = null)
+            where TPart : ContentPart<TRecord>
+            where TRecord : ContentPartRecord {
+            return contentManager
+                .Query<TPart, TRecord>(versionOptions ?? VersionOptions.Published)
+                .Join<CommonPartRecord>()
+                .Where(x => x.Container != null && x.Container.Id == containerId)
+                .Join<ContainablePartRecord>()
+                .OrderByDescending(x => x.Position)
+                .List();
+        }
+    }
+}

Orchard.Tools.csproj

@@ -111,6 +111,7 @@
   <ItemGroup>
     <Compile Include="Commands\CodeGenerationCommands.cs" />
     <Compile Include="Commands\TemplateInfo.cs" />
+    <Compile Include="Helpers\Content\ContentManagerExtensions.cs" />
     <Compile Include="Helpers\Html\HtmlHelperExtensions.cs" />
     <Compile Include="Helpers\Long\LongExtensions.cs" />
     <Compile Include="Helpers\Reflection\ObjectExtensions.cs" />