code guidelines

src/Yavsc/ApiControllers/Relationship/ChatRoomApiController.cs

@@ -14,7 +14,7 @@ namespace Yavsc.Controllers
     [Route("api/ChatRoomApi")]
     public class ChatRoomApiController : Controller
     {
-        private ApplicationDbContext _context;
+        private readonly ApplicationDbContext _context;
 
         public ChatRoomApiController(ApplicationDbContext context)
         {
@@ -164,4 +164,4 @@ namespace Yavsc.Controllers
             return _context.ChatRoom.Count(e => e.Name == id) > 0;
         }
     }
-}
+}