feat(controller): unprocessable entity method

Author: jaredcnance

README.md

@@ -11,8 +11,8 @@
 - [x] Fetching relationships
 - [x] Creating relationships
 - [x] Refactor relationships links to use an POCO that contains data and links objects
-- [ ] Include Entities
-- [ ] BadRequest should be 422 in POST
+- [x] Include Entities
+- [x] BadRequest should be 422 in POST
 - [ ] Add integration tests to example project
 - [ ] Add logging
 - [ ] Configure Different Repositories

src/JsonApiDotNetCore/Controllers/JsonApiController.cs

@@ -105,7 +105,7 @@ public virtual async Task<IActionResult> GetRelationshipAsync(TId id, string rel
                 .GetRelationshipName<T>(relationshipName);
 
             if (relationshipName == null)
-                return NotFound();
+                return UnprocessableEntity();
 
             var entity = await _entities.GetAndIncludeAsync(id, relationshipName);
 
@@ -125,7 +125,7 @@ public virtual async Task<IActionResult> GetRelationshipAsync(TId id, string rel
         public virtual async Task<IActionResult> PostAsync([FromBody] T entity)
         {
             if (entity == null)
-                return BadRequest();
+                return UnprocessableEntity();
 
             await _entities.CreateAsync(entity);
 
@@ -136,7 +136,7 @@ public virtual async Task<IActionResult> PostAsync([FromBody] T entity)
         public virtual async Task<IActionResult> PatchAsync(TId id, [FromBody] T entity)
         {
             if (entity == null)
-                return BadRequest();
+                return UnprocessableEntity();
 
             var updatedEntity = await _entities.UpdateAsync(id, entity);
 
@@ -189,5 +189,10 @@ private IQueryable<T> IncludeRelationships(IQueryable<T> entities, List<string>
 
             return entities;
         }
+
+        protected IActionResult UnprocessableEntity()
+        {
+            return new StatusCodeResult(422);
+        }
     }
 }