Follow @Tirokk's suggestion

backend/src/middleware/notifications/notificationsMiddleware.js

@@ -4,13 +4,13 @@ const notifyUsers = async (label, id, idsOfUsers, reason, context) => {
   if (!idsOfUsers.length) return
 
   // Checked here, because it does not go through GraphQL checks at all in this file.
-  const reasonsAllowed = ['mentioned_in_post', 'mentioned_in_comment', 'comment_on_post']
+  const reasonsAllowed = ['mentioned_in_post', 'mentioned_in_comment', 'commented_on_post']
   if (!reasonsAllowed.includes(reason)) {
     throw new Error('Notification reason is not allowed!')
   }
   if (
     (label === 'Post' && reason !== 'mentioned_in_post') ||
-    (label === 'Comment' && !['mentioned_in_comment', 'comment_on_post'].includes(reason))
+    (label === 'Comment' && !['mentioned_in_comment', 'commented_on_post'].includes(reason))
   ) {
     throw new Error('Notification does not fit the reason!')
   }
@@ -44,7 +44,7 @@ const notifyUsers = async (label, id, idsOfUsers, reason, context) => {
       `
       break
     }
-    case 'comment_on_post': {
+    case 'commented_on_post': {
       cypher = `
         MATCH (postAuthor: User)-[:WROTE]->(post: Post)<-[:COMMENTS]-(comment: Comment { id: $id })<-[:WROTE]-(author: User)
         MATCH (user: User)
@@ -108,7 +108,7 @@ const handleCreateComment = async (resolve, root, args, context, resolveInfo) =>
       return record.get('user')
     })
     if (context.user.id !== postAuthor.id) {
-      await notifyUsers('Comment', comment.id, [postAuthor.id], 'comment_on_post', context)
+      await notifyUsers('Comment', comment.id, [postAuthor.id], 'commented_on_post', context)
     }
   }
 

backend/src/middleware/notifications/notificationsMiddleware.spec.js

@@ -162,7 +162,7 @@ describe('notifications', () => {
                   {
                     read: false,
                     createdAt: expect.any(String),
-                    reason: 'comment_on_post',
+                    reason: 'commented_on_post',
                     from: {
                       __typename: 'Comment',
                       id: 'c47',

backend/src/schema/resolvers/notifications.js

@@ -16,7 +16,7 @@ const transformReturnType = record => {
 export default {
   Query: {
     notifications: async (parent, args, context, resolveInfo) => {
-      const { user } = context
+      const { user: currentUser } = context
       const session = context.driver.session()
       let notifications
       let whereClause
@@ -49,7 +49,7 @@ export default {
         RETURN resource, notification, user
         ${orderByClause}
         `
-        const result = await session.run(cypher, { id: user.id })
+        const result = await session.run(cypher, { id: currentUser.id })
         notifications = await result.records.map(transformReturnType)
       } finally {
         session.close()
@@ -59,7 +59,7 @@ export default {
   },
   Mutation: {
     markAsRead: async (parent, args, context, resolveInfo) => {
-      const { user } = context
+      const { user: currentUser } = context
       const session = context.driver.session()
       let notification
       try {
@@ -68,7 +68,7 @@ export default {
         SET notification.read = TRUE
         RETURN resource, notification, user
         `
-        const result = await session.run(cypher, { resourceId: args.id, id: user.id })
+        const result = await session.run(cypher, { resourceId: args.id, id: currentUser.id })
         const notifications = await result.records.map(transformReturnType)
         notification = notifications[0]
       } finally {

backend/src/schema/types/enum/ReasonNotification.gql

@@ -1,5 +1,5 @@
 enum ReasonNotification {
   mentioned_in_post
   mentioned_in_comment
-  comment_on_post
+  commented_on_post
-}
+}

backend/src/schema/types/type/NOTIFIED.gql

@@ -16,7 +16,7 @@ enum NotificationOrdering {
 enum NotificationReason {
   mentioned_in_post
   mentioned_in_comment
-  comment_on_post
+  commented_on_post
 }
 
 type Query {

webapp/components/notifications/Notification/Notification.spec.js

@@ -37,7 +37,7 @@ describe('Notification', () => {
   describe('given a notification about a comment on a post', () => {
     beforeEach(() => {
       propsData.notification = {
-        reason: 'comment_on_post',
+        reason: 'commented_on_post',
         from: {
           __typename: 'Comment',
           id: 'comment-1',
@@ -56,7 +56,7 @@ describe('Notification', () => {
     it('renders reason', () => {
       wrapper = Wrapper()
       expect(wrapper.find('.reason-text-for-test').text()).toEqual(
-        'notifications.menu.comment_on_post',
+        'notifications.menu.commented_on_post',
       )
     })
     it('renders title', () => {

webapp/locales/de.json

@@ -134,7 +134,7 @@
     "menu": {
       "mentioned_in_post": "Hat dich in einem Beitrag erwähnt …",
       "mentioned_in_comment": "Hat dich in einem Kommentar erwähnt …",
-      "comment_on_post": "Hat deinen Beitrag kommentiert …"
+      "commented_on_post": "Hat deinen Beitrag kommentiert …"
     }
   },
   "search": {

webapp/locales/en.json

@@ -134,7 +134,7 @@
     "menu": {
       "mentioned_in_post": "Mentioned you in a post …",
       "mentioned_in_comment": "Mentioned you in a comment …",
-      "comment_on_post": "Commented on your post …"
+      "commented_on_post": "Commented on your post …"
     }
   },
   "search": {