create common exceptions handler for validation error

Author: mahenzon

fastapi_jsonapi/utils/exceptions.py

@@ -0,0 +1,18 @@
+from functools import wraps
+
+from fastapi import HTTPException, status
+from pydantic import ValidationError
+
+
+def handle_validation_error(func):
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        try:
+            return func(*args, **kwargs)
+        except ValidationError as ex:
+            raise HTTPException(
+                status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
+                detail=ex.errors(),
+            )
+
+    return wrapper