reset number of posts to fetch on channel switch and fresh page load

web/react/components/channel_loader.jsx

@@ -8,6 +8,7 @@
 var BrowserStore = require('../stores/browser_store.jsx');
 var AsyncClient = require('../utils/async_client.jsx');
 var SocketStore = require('../stores/socket_store.jsx');
+var ChannelStore = require('../stores/channel_store.jsx');
 var Constants = require('../utils/constants.jsx');
 
 module.exports = React.createClass({
@@ -15,7 +16,7 @@ module.exports = React.createClass({
 
         /* Start initial aysnc loads */
         AsyncClient.getMe();
-        AsyncClient.getPosts(true);
+        AsyncClient.getPosts(true, ChannelStore.getCurrentId(), Constants.POST_CHUNK_SIZE);
         AsyncClient.getChannels(true, true);
         AsyncClient.getChannelExtraInfo(true);
         AsyncClient.findTeams();

web/react/utils/async_client.jsx

@@ -272,17 +272,20 @@ module.exports.search = function(terms) {
     );
 }
 
-module.exports.getPosts = function(force, id) {
+module.exports.getPosts = function(force, id, maxPosts) {
     if (PostStore.getCurrentPosts() == null || force) {
         var channelId = id ? id : ChannelStore.getCurrentId();
 
         if (isCallInProgress("getPosts_"+channelId)) return;
 
         var post_list = PostStore.getCurrentPosts();
+
+        if (!maxPosts) { maxPosts = Constants.POST_CHUNK_SIZE * Constants.MAX_POST_CHUNKS };
+
         // if we already have more than POST_CHUNK_SIZE posts,
         //   let's get the amount we have but rounded up to next multiple of POST_CHUNK_SIZE,
-        //   with a max at 180
-        var numPosts = post_list && post_list.order.length > 0 ? Math.min(180, Constants.POST_CHUNK_SIZE * Math.ceil(post_list.order.length / Constants.POST_CHUNK_SIZE)) : Constants.POST_CHUNK_SIZE;
+        //   with a max at maxPosts
+        var numPosts = post_list && post_list.order.length > 0 ? Math.min(maxPosts, Constants.POST_CHUNK_SIZE * Math.ceil(post_list.order.length / Constants.POST_CHUNK_SIZE)) : Constants.POST_CHUNK_SIZE;
 
         if (channelId != null) {
             callTracker["getPosts_"+channelId] = utils.getTimestamp();

web/react/utils/constants.jsx

@@ -55,6 +55,7 @@ module.exports = {
   DEFAULT_CHANNEL: 'town-square',
   OFFTOPIC_CHANNEL: 'off-topic',
   POST_CHUNK_SIZE: 60,
+  MAX_POST_CHUNKS: 3,
   RESERVED_TEAM_NAMES: [
     "www",
     "web",

web/react/utils/utils.jsx

@@ -720,7 +720,7 @@ module.exports.switchChannel = function(channel, teammate_name) {
 
     AsyncClient.getChannels(true, true, true);
     AsyncClient.getChannelExtraInfo(true);
-    AsyncClient.getPosts(true, channel.id);
+    AsyncClient.getPosts(true, channel.id, Constants.POST_CHUNK_SIZE);
 
     $('.inner__wrap').removeClass('move--right');
     $('.sidebar--left').removeClass('move--right');