From b4cd5a476351cfe46d98bc6fe90994230ed0a73a Mon Sep 17 00:00:00 2001
From: Andras Toth <andras.toth93@gmail.com>
Date: Fri, 16 Oct 2015 09:02:11 +0200
Subject: [PATCH] feat(schema): mutation fields can be disabled

---
 src/schema/schema.js      | 17 +++++++++++------
 src/schema/schema.spec.js |  9 +++++++++
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/src/schema/schema.js b/src/schema/schema.js
index dd05eb8..d01f34d 100644
--- a/src/schema/schema.js
+++ b/src/schema/schema.js
@@ -125,7 +125,7 @@ function getMutationField(graffitiModel, type) {
   };
 }
 
-function getFields(graffitiModels) {
+function getFields(graffitiModels, {mutation} = {mutation: true}) {
   const types = getTypes(graffitiModels);
 
   const {queries, mutations} = reduce(types, ({queries, mutations}, type, key) => {
@@ -177,15 +177,20 @@ function getFields(graffitiModels) {
     fields: mutations
   });
 
-  return {
-    query: RootQuery,
-    mutation: RootMutation
+  const fields = {
+    query: RootQuery
   };
+
+  if (mutation) {
+    fields.mutation = RootMutation;
+  }
+
+  return fields;
 }
 
-function getSchema(mongooseModels) {
+function getSchema(mongooseModels, options) {
   const graffitiModels = getModels(mongooseModels);
-  const fields = getFields(graffitiModels);
+  const fields = getFields(graffitiModels, options);
   return new GraphQLSchema(fields);
 }
 
diff --git a/src/schema/schema.spec.js b/src/schema/schema.spec.js
index 429d5a3..2406e7a 100644
--- a/src/schema/schema.spec.js
+++ b/src/schema/schema.spec.js
@@ -147,5 +147,14 @@ describe('field', () => {
       expect(schema._schemaConfig.query.name).to.be.equal('RootQuery');
       expect(schema._schemaConfig.mutation.name).to.be.equal('RootMutation');
     });
+
+    it('should return a GraphQL schema without mutations', function getSchemaTest() {
+      this.sandbox.stub(model, 'getModels').returns({});
+      this.sandbox.stub(type, 'getTypes').returns(types);
+      const schema = getSchema([], {mutation: false});
+      expect(schema).instanceOf(GraphQLSchema);
+      expect(schema._schemaConfig.query.name).to.be.equal('RootQuery');
+      expect(schema._schemaConfig.mutation).to.be.equal(undefined);
+    });
   });
 });