Enable customizing validate max_errors through settings

Author: kiendang

docs/settings.rst

@@ -269,3 +269,14 @@ Default: ``False``
 
 
 .. _GraphiQLDocs: https://graphiql-test.netlify.app/typedoc/modules/graphiql_react#graphiqlprovider-2
+
+
+``MAX_VALIDATION_ERRORS``
+------------------------------------
+
+In case ``validation_rules`` are provided to ``GraphQLView``, if this is set to a non-negative ``int`` value,
+``graphql.validation.validate`` will stop validation after this number of errors has been reached.
+If not set or set to ``None``, the maximum number of errors will follow ``graphql.validation.validate`` default
+*i.e.* 100.
+
+Default: ``None``

graphene_django/settings.py

@@ -43,6 +43,7 @@
     "GRAPHIQL_INPUT_VALUE_DEPRECATION": False,
     "ATOMIC_MUTATIONS": False,
     "TESTING_ENDPOINT": "/graphql",
+    "MAX_VALIDATION_ERRORS": None,
 }
 
 if settings.DEBUG:

graphene_django/views.py

@@ -336,7 +336,12 @@ def execute_graphql_request(
                 )
             )
 
-        validation_errors = validate(schema, document, self.validation_rules)
+        validation_errors = validate(
+            schema,
+            document,
+            self.validation_rules,
+            graphene_settings.MAX_VALIDATION_ERRORS,
+        )
 
         if validation_errors:
             return ExecutionResult(data=None, errors=validation_errors)