loading + error states for forms

zero.Web/Controllers/BackofficeController.cs

@@ -1,6 +1,8 @@
 using Microsoft.AspNetCore.Mvc;
+using System.Threading.Tasks;
 using zero.Core;
 using zero.Core.Identity;
+using zero.Web.Mapper;
 
 namespace zero.Web.Controllers
 {
@@ -9,10 +11,30 @@ namespace zero.Web.Controllers
   {
     protected IZeroConfiguration Configuration { get; set; }
 
+    protected IMapper Mapper { get; set; }
+
+
+    public BackofficeController(IZeroConfiguration config, IMapper mapper)
+    {
+      Configuration = config;
+      Mapper = mapper;
+    }
+
 
     public BackofficeController(IZeroConfiguration config)
     {
       Configuration = config;
     }
+
+
+    protected IActionResult Json<T, TTarget>(T model) where TTarget : class, new()
+    {
+      if (model == null)
+      {
+        return new StatusCodeResult(404);
+      }
+
+      return Json(Mapper.Map<T, TTarget>(model));
+    }
   }
 }