Merge pull request #121 from Research-Institute/fix/#118

include inner exception messages in detail

Author: jaredcnance

src/JsonApiDotNetCore/Internal/JsonApiExceptionFactory.cs

@@ -15,8 +15,19 @@ public static JsonApiException GetException(Exception exception)
                 case "InvalidCastException":
                     return new JsonApiException("409", exception.Message);
                 default:
-                    return new JsonApiException("500", exception.Message);
+                    return new JsonApiException("500", exception.Message, GetExceptionDetail(exception.InnerException));
             }
         }
+
+        private static string GetExceptionDetail(Exception exception)
+        {
+            string detail = null;
+            while(exception != null)
+            {
+                detail = $"{detail}{exception.Message}; ";
+                exception = exception.InnerException;
+            }
+            return detail;
+        }
     }
 }