Use built-in graphql errors

client/cypress/integration/coupon.spec.js

@@ -1,3 +1,5 @@
+import { GraphQLError } from "graphql";
+
 const schema = require('../fixtures/schema.json');
 
 describe('Email Verifcation', () => {
@@ -10,12 +12,9 @@ describe('Email Verifcation', () => {
     cy.mockGraphql({
       schema: schema,
       operations: {
-        Coupon: variables => {
-          return {
-            coupon: {
-              errors: [],
-              success: true
-            }
+        Coupon: {
+          coupon: {
+            success: true
           }
         },
       }
@@ -45,16 +44,7 @@ describe('Email Verifcation', () => {
     cy.mockGraphql({
       schema: schema,
       operations: {
-        Coupon: variables => {
-          return {
-            coupon: {
-              errors: [{
-                field: 'invalid_coupon'
-              }],
-              success: false
-            }
-          }
-        },
+        Coupon: new GraphQLError("invalid_coupon")
       }
     });
     cy.login('rahel.cueni', 'test', true)
@@ -71,16 +61,7 @@ describe('Email Verifcation', () => {
     cy.mockGraphql({
       schema: schema,
       operations: {
-        Coupon: variables => {
-          return {
-            coupon: {
-              errors: [{
-                field: 'unknown_error'
-              }],
-              success: false
-            }
-          }
-        },
+        Coupon: new GraphQLError("unknown_error")
       }
     });
     cy.login('rahel.cueni', 'test', true)

client/src/graphql/gql/mutations/redeemCoupon.gql

@@ -1,8 +1,5 @@
 mutation Coupon($input: CouponInput!){
   coupon(input: $input) {
     success
-    errors {
-      field
-    }
   }
 }

client/src/pages/email-verification.vue

@@ -64,7 +64,8 @@ export default {
             this.errorMessage = 'Ein Fehler ist aufgetreten. Bitte kontaktieren Sie den Administrator.';
         }
       }
-    });
+    })
+    .catch(() => this.errorMessage = 'Ein Fehler ist aufgetreten. Bitte kontaktieren Sie den Administrator.');
   },
 
 };

client/src/pages/license-activation.vue

@@ -80,14 +80,14 @@ export default {
                     query: ME_QUERY,
                     fetchPolicy: 'network-only',
                   }).then(() => that.$router.push('/'));
-              } else {
-                if (coupon.errors[0].field === 'invalid_coupon') {
-                  that.couponErrors = ['Der angegebene Coupon-Code ist falsch.'];
-                } else {
-                  that.couponErrors = ['Es ist ein Fehler aufgetreten. Bitte versuchen Sie es nochmals oder kontaktieren Sie den Administrator.'];
-                }
               }
             }
+          }).catch(({message}) => {
+            if (message.indexOf('invalid_coupon') > -1) {
+              that.couponErrors = ['Der angegebene Coupon-Code ist falsch.'];
+            } else {
+              that.couponErrors = ['Es ist ein Fehler aufgetreten. Bitte versuchen Sie es nochmals oder kontaktieren Sie den Administrator.'];
+            }
           });
         }
       });

server/core/schema/mutations/coupon.py

@@ -14,16 +14,11 @@ from core.hep_client import HepClient, HepClientException
 from users.user_signup_login_handler import check_and_create_licenses, create_role_for_user
 
 
-class CouponError(graphene.ObjectType):
-    field = graphene.String()
-
-
 class Coupon(relay.ClientIDMutation):
     class Input:
         coupon_code_input = graphene.String()
 
     success = graphene.Boolean()
-    errors = graphene.List(CouponError)  # todo: change for consistency
 
     @classmethod
     def mutate_and_get_payload(cls, root, info, **kwargs):
@@ -33,25 +28,25 @@ class Coupon(relay.ClientIDMutation):
         try:
             hep_id = info.context.user.hep_id
         except AttributeError:
-            return cls(success=False, errors=[{'field': 'not_authenticated'}])
+            raise Exception('not_authenticated')
 
         try:
             response = hep_client.coupon_redeem(coupon_code, hep_id)
         except HepClientException:
-            return cls(success=False, errors=[{'field': 'unknown_error'}])
+            raise Exception('unknown_error')
 
         if not response:
-            return cls(success=False, errors=[{'field': 'invalid_coupon'}])
+            raise Exception('invalid_coupon')
 
         license, error_msg = check_and_create_licenses(hep_client, info.context.user)
 
         # todo fail if no license
         if error_msg:
-            return cls(success=False, errors=[error_msg])
+            raise Exception(error_msg)
 
         create_role_for_user(info.context.user, license.for_role.key)
 
-        return cls(success=True, errors=[])
+        return cls(success=True)
 
 
 class CouponMutations:

server/core/tests/test_coupon.py

@@ -42,9 +42,6 @@ class CouponTests(TestCase):
             mutation Coupon($input: CouponInput!){
               coupon(input: $input) {
                 success
-                errors {
-                  field
-                }
               }
             }
         '''
@@ -76,8 +73,7 @@ class CouponTests(TestCase):
     def test_user_has_invalid_coupon(self, response_mock):
         result = self.make_coupon_mutation('COUPON--1234', self.client)
 
-        self.assertFalse(result.get('data').get('coupon').get('success'))
-        self.assertEqual(result.get('data').get('coupon').get('errors')[0].get('field'), 'invalid_coupon')
+        self.assertEqual(result.get('errors')[0].get('message'), 'invalid_coupon')
 
     @patch.object(requests, 'put', return_value=MockResponse(200, data=['201', 'Invalid Coupon']))
     def test_unauthenticated_user_cannot_redeem(self, response_mock):
@@ -90,5 +86,4 @@ class CouponTests(TestCase):
 
         result = self.make_coupon_mutation('COUPON--1234', client)
 
-        self.assertFalse(result.get('data').get('coupon').get('success'))
-        self.assertEqual(result.get('data').get('coupon').get('errors')[0].get('field'), 'not_authenticated')
+        self.assertEqual(result.get('errors')[0].get('message'), 'not_authenticated')