Merge pull request #1400 from Human-Connection/1391-fix-bug-where-apollo-cache-not-updated-on-comment-deletion

Update the apollo cache

webapp/components/Comment.vue

@@ -62,12 +62,13 @@
 </template>
 
 <script>
-import gql from 'graphql-tag'
 import { mapGetters, mapMutations } from 'vuex'
 import HcUser from '~/components/User'
 import ContentMenu from '~/components/ContentMenu'
 import ContentViewer from '~/components/Editor/ContentViewer'
 import HcEditCommentForm from '~/components/EditCommentForm/EditCommentForm'
+import CommentMutations from '~/graphql/CommentMutations'
+import PostQuery from '~/graphql/PostQuery'
 
 export default {
   data: function() {
@@ -142,16 +143,23 @@ export default {
     },
     async deleteCommentCallback() {
       try {
-        var gqlMutation = gql`
-          mutation($id: ID!) {
-            DeleteComment(id: $id) {
-              id
-            }
-          }
-        `
         await this.$apollo.mutate({
-          mutation: gqlMutation,
+          mutation: CommentMutations(this.$i18n).DeleteComment,
           variables: { id: this.comment.id },
+          update: async store => {
+            const data = await store.readQuery({
+              query: PostQuery(this.$i18n),
+              variables: { id: this.post.id },
+            })
+
+            const index = data.Post[0].comments.findIndex(
+              deletedComment => deletedComment.id === this.comment.id,
+            )
+            if (index !== -1) {
+              data.Post[0].comments.splice(index, 1)
+            }
+            await store.writeQuery({ query: PostQuery(this.$i18n), data })
+          },
         })
         this.$toast.success(this.$t(`delete.comment.success`))
         this.$emit('deleteComment')

webapp/components/CommentForm/CommentForm.vue

@@ -80,13 +80,13 @@ export default {
             postId: this.post.id,
             content: this.form.content,
           },
-          update: (store, { data: { CreateComment } }) => {
-            const data = store.readQuery({
+          update: async (store, { data: { CreateComment } }) => {
+            const data = await store.readQuery({
               query: PostQuery(this.$i18n),
               variables: { id: this.post.id },
             })
             data.Post[0].comments.push(CreateComment)
-            store.writeQuery({ query: PostQuery(this.$i18n), data })
+            await store.writeQuery({ query: PostQuery(this.$i18n), data })
           },
         })
         .then(res => {

webapp/graphql/CommentMutations.js

@@ -51,5 +51,12 @@ export default i18n => {
         }
       }
     `,
+    DeleteComment: gql`
+      mutation($id: ID!) {
+        DeleteComment(id: $id) {
+          id
+        }
+      }
+    `,
   }
 }