Add UpdateGameMutation

api/schema.py

@@ -15,6 +15,27 @@ class Game(DjangoObjectType):
         fields = "__all__"
 
 
+class UpdateGameMutation(graphene.Mutation):
+    class Arguments:
+        id = graphene.ID(required=True)
+        name = graphene.String()
+        year_released = graphene.Int()
+        wikidata = graphene.String()
+
+    game = graphene.Field(Game)
+
+    def mutate(self, info, id, name=None, year_released=None, wikidata=None):
+        game_instance = GameModel.objects.get(pk=id)
+        if name is not None:
+            game_instance.name = name
+        if year_released is not None:
+            game_instance.year_released = year_released
+        if wikidata is not None:
+            game_instance.wikidata = wikidata
+        game_instance.save()
+        return UpdateGameMutation(game=game_instance)
+
+
 class Edition(DjangoObjectType):
     class Meta:
         model = EditionModel
@@ -79,4 +100,8 @@ class Query(graphene.ObjectType):
         return DeviceModel.objects.all()
 
 
-schema = graphene.Schema(query=Query)
+class Mutation(graphene.ObjectType):
+    update_game = UpdateGameMutation.Field()
+
+
+schema = graphene.Schema(query=Query, mutation=Mutation)