Introduce dtos

Controllers/GerbilsController.cs

@@ -1,6 +1,9 @@
 using GerbilManager.Models;
 using GerbilManager.Repositories;
+using GerbilManager.Dtos;
+
 using Microsoft.AspNetCore.Mvc;
+using GerbilManager.Converter;
 
 namespace GerbilManager.Controllers
 {
@@ -17,17 +20,17 @@ namespace GerbilManager.Controllers
 
         //GET /gerbils
         [HttpGet]
-        public IEnumerable<Gerbil> GetGerbils()
+        public IEnumerable<GerbilDto> GetGerbils()
         {
-            var items = repository.GetGerbils();
+            var items = repository.GetGerbils().Select( gerbil => gerbil.AsDto());
             return items;
         }
 
         //GET /gerbils
         [HttpGet("{id}")]
-        public ActionResult<Gerbil> GetGerbil(Guid id)
+        public ActionResult<GerbilDto> GetGerbil(Guid id)
         {
-            var item = repository.GetGerbil(id);
+            var item = repository.GetGerbil(id).AsDto();
 
             if(item is null)
             {