Merge pull request #2148 from mattermost/missing-posts-2.0

RC2 PLT-1774 Fixing the elusive missing post bug

web/react/stores/post_store.jsx

@@ -83,8 +83,6 @@ class PostStoreClass extends EventEmitter {
         this.getCommentDraft = this.getCommentDraft.bind(this);
         this.clearDraftUploads = this.clearDraftUploads.bind(this);
         this.clearCommentDraftUploads = this.clearCommentDraftUploads.bind(this);
-        this.storeLatestUpdate = this.storeLatestUpdate.bind(this);
-        this.getLatestUpdate = this.getLatestUpdate.bind(this);
         this.getCurrentUsersLatestPost = this.getCurrentUsersLatestPost.bind(this);
         this.getCommentCount = this.getCommentCount.bind(this);
 
@@ -258,7 +256,7 @@ class PostStoreClass extends EventEmitter {
                 const np = newPosts.posts[pid];
                 if (np.delete_at === 0) {
                     combinedPosts.posts[pid] = np;
-                    if (combinedPosts.order.indexOf(pid) === -1) {
+                    if (combinedPosts.order.indexOf(pid) === -1 && newPosts.order.indexOf(pid) !== -1) {
                         combinedPosts.order.push(pid);
                     }
                 }
@@ -507,19 +505,6 @@ class PostStoreClass extends EventEmitter {
             }
         });
     }
-    storeLatestUpdate(channelId, time) {
-        if (!this.postsInfo.hasOwnProperty(channelId)) {
-            this.postsInfo[channelId] = {};
-        }
-        this.postsInfo[channelId].latestPost = time;
-    }
-    getLatestUpdate(channelId) {
-        if (this.postsInfo.hasOwnProperty(channelId) && this.postsInfo[channelId].hasOwnProperty('latestPost')) {
-            return this.postsInfo[channelId].latestPost;
-        }
-
-        return 0;
-    }
     getCommentCount(post) {
         const posts = this.getAllPosts(post.channel_id).posts;
 

web/react/utils/async_client.jsx

@@ -521,18 +521,25 @@ export function getPosts(id) {
         return;
     }
 
-    if (PostStore.getAllPosts(channelId) == null) {
+    const postList = PostStore.getAllPosts(channelId);
+
+    if ($.isEmptyObject(postList) || postList.order.length < Constants.POST_CHUNK_SIZE) {
         getPostsPage(channelId, Constants.POST_CHUNK_SIZE);
         return;
     }
 
-    const latestUpdate = PostStore.getLatestUpdate(channelId);
+    const latestPost = PostStore.getLatestPost(channelId);
+    let latestPostTime = 0;
+
+    if (latestPost != null && latestPost.update_at != null) {
+        latestPostTime = latestPost.create_at;
+    }
 
     callTracker['getPosts_' + channelId] = utils.getTimestamp();
 
     client.getPosts(
         channelId,
-        latestUpdate,
+        latestPostTime,
         (data, textStatus, xhr) => {
             if (xhr.status === 304 || !data) {
                 return;