Tracking Meganav item references as relations

README.md

@@ -9,7 +9,7 @@ Click and drag an item to change it's position within the navigation; drop it wh
 
 ## Getting started
 
-This package is supported on Umbraco 8+.
+This package is supported on Umbraco 8.7+.
 
 ### Installation
 

src/Our.Umbraco.Meganav/Our.Umbraco.Meganav.csproj

@@ -16,6 +16,6 @@
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="UmbracoCms.Web" Version="8.1.0" />
+    <PackageReference Include="UmbracoCms.Web" Version="8.7.0" />
   </ItemGroup>
 </Project>

src/Our.Umbraco.Meganav/Startup/MeganavComposer.cs

@@ -1,4 +1,5 @@
 using Our.Umbraco.Meganav.PublishedContent;
+using Our.Umbraco.Meganav.ValueReferences;
 using Umbraco.Core;
 using Umbraco.Core.Composing;
 
@@ -10,6 +11,8 @@ public class MeganavComposer : IUserComposer
         public void Compose(Composition composition)
         {
             composition.Register<PublishedElementFactory>();
+
+            composition.DataValueReferenceFactories().Append<MeganavValueReferenceFactory>();
         }
     }
 }

src/Our.Umbraco.Meganav/ValueReferences/MeganavValueReferenceFactory.cs

@@ -0,0 +1,43 @@
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using Our.Umbraco.Meganav.Models;
+using Umbraco.Core.Models.Editors;
+using Umbraco.Core.PropertyEditors;
+
+namespace Our.Umbraco.Meganav.ValueReferences
+{
+    internal class MeganavValueReferenceFactory : IDataValueReferenceFactory, IDataValueReference
+    {
+        public bool IsForEditor(IDataEditor dataEditor) => dataEditor.Alias.Equals(Constants.PropertyEditorAlias);
+
+        public IDataValueReference GetDataValueReference() => this;
+
+        public IEnumerable<UmbracoEntityReference> GetReferences(object value)
+        {
+            var entities = JsonConvert.DeserializeObject<IEnumerable<MeganavEntity>>(value?.ToString());
+
+            return GetReferences(entities);
+        }
+
+        private IEnumerable<UmbracoEntityReference> GetReferences(IEnumerable<MeganavEntity> entities)
+        {
+            foreach (var entity in entities)
+            {
+                if (entity.Children != null)
+                {
+                    var references = GetReferences(entity.Children);
+
+                    foreach (var reference in references)
+                    {
+                        yield return reference;
+                    }
+                }
+
+                if (entity.Udi != null)
+                {
+                    yield return new UmbracoEntityReference(entity.Udi);
+                }
+            }
+        }
+    }
+}