Fixed node id fetching when cannot decode. Fixed #14

graphene/relay/fields.py

@@ -81,7 +81,10 @@ class NodeField(Field):
     def id_fetcher(self, global_id, info):
         from graphene.relay.utils import is_node
         schema = info.schema.graphene_schema
-        resolved_global_id = from_global_id(global_id)
+        try:
+            resolved_global_id = from_global_id(global_id)
+        except:
+            return None
         _type, _id = resolved_global_id.type, resolved_global_id.id
         object_type = schema.get_type(_type)
         if not is_node(object_type) or (self.field_object_type and

graphene/relay/tests/test_query.py

@@ -38,6 +38,10 @@ def test_nodefield_query():
         id
         name
       },
+      false: myNode(id:"WrongNodeId") {
+        id
+        name
+      },
       allMyNodes (customArg:"1") {
         edges {
           node {
@@ -56,6 +60,7 @@ def test_nodefield_query():
             'id': 'TXlOb2RlOjE=',
             'name': 'mo'
         },
+        'false': None,
         'allMyNodes': {
             'edges': [{
                 'node': {