https://dev.azure.com/umbraco/D-Team%20Tracker/_workitems/edit/6587 - Moved RelationController

src/Umbraco.Web.BackOffice/Controllers/RelationController.cs

@@ -0,0 +1,75 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Http;
+using Microsoft.AspNetCore.Mvc;
+using Umbraco.Core;
+using Umbraco.Core.Mapping;
+using Umbraco.Core.Models;
+using Umbraco.Core.Services;
+using Umbraco.Web.BackOffice.Filters;
+using Umbraco.Web.Common.ActionsResults;
+using Umbraco.Web.Common.Attributes;
+using Umbraco.Web.Editors;
+using Umbraco.Web.Models.ContentEditing;
+using Constants = Umbraco.Core.Constants;
+
+namespace Umbraco.Web.BackOffice.Controllers
+{
+    [PluginController("UmbracoApi")]
+    [TypeFilter(typeof(UmbracoApplicationAuthorizeAttribute), Arguments = new object[]{new string[]{Constants.Applications.Content} })]
+    public class RelationController : UmbracoAuthorizedJsonController
+    {
+        private readonly UmbracoMapper _umbracoMapper;
+        private readonly IRelationService _relationService;
+
+        public RelationController(UmbracoMapper umbracoMapper,
+            IRelationService relationService)
+        {
+            _umbracoMapper = umbracoMapper ?? throw new ArgumentNullException(nameof(umbracoMapper));
+            _relationService = relationService ?? throw new ArgumentNullException(nameof(relationService));
+        }
+
+        public RelationDisplay GetById(int id)
+        {
+            return _umbracoMapper.Map<IRelation, RelationDisplay>(_relationService.GetById(id));
+        }
+
+        //[EnsureUserPermissionForContent("childId")]
+        public IEnumerable<RelationDisplay> GetByChildId(int childId, string relationTypeAlias = "")
+        {
+            var relations = _relationService.GetByChildId(childId).ToArray();
+
+            if (relations.Any() == false)
+            {
+                return Enumerable.Empty<RelationDisplay>();
+            }
+
+            if (string.IsNullOrWhiteSpace(relationTypeAlias) == false)
+            {
+                return
+                    _umbracoMapper.MapEnumerable<IRelation, RelationDisplay>(
+                        relations.Where(x => x.RelationType.Alias.InvariantEquals(relationTypeAlias)));
+            }
+
+            return _umbracoMapper.MapEnumerable<IRelation, RelationDisplay>(relations);
+        }
+
+        [HttpDelete]
+        [HttpPost]
+        public IActionResult DeleteById(int id)
+        {
+            var foundRelation = _relationService.GetById(id);
+
+            if (foundRelation == null)
+            {
+                return new UmbracoProblemResult("No relation found with the specified id", HttpStatusCode.NotFound);
+            }
+
+            _relationService.Delete(foundRelation);
+
+            return Ok();
+        }
+    }
+}