Merge pull request #1 from Cellane/patch-1

Fixed ModelNotFound specialization

Author: proggeramlug

Sources/APIErrorMiddleware/Specialization/Specialization.swift

@@ -43,15 +43,15 @@ public protocol ErrorCatchingSpecialization {
 /// Catches Fluent's `modelNotFound` error and returns a 404 status code.
 public struct ModelNotFound: ErrorCatchingSpecialization {
     public init() {}
-    
+
     public func convert(error: Error, on request: Request) -> ErrorResult? {
-        if let error = error as? Debuggable, error.identifier == "modelNotFound" {
-            
-            // We have the infamous `modelNotFound` error from Fluent that returns
-            // a 500 status code instead of a 404.
-            // Set the message to the error's `reason` and the status to 404 (Not Found)
+        if
+            let wrappingError = error as? NotFound,
+            let error = wrappingError.rootCause as? FluentError
+        {
             return ErrorResult(message: error.reason, status: .notFound)
         }
+
         return nil
     }
 }