Return channel type in new post websocket events

api/post.go

@@ -698,6 +698,7 @@ func sendNotificationsAndForget(c *Context, post *model.Post, team *model.Team,
 
 		message := model.NewMessage(c.Session.TeamId, post.ChannelId, post.UserId, model.ACTION_POSTED)
 		message.Add("post", post.ToJson())
+		message.Add("channel_type", channel.Type)
 
 		if len(post.Filenames) != 0 {
 			message.Add("otherFile", "true")

web/react/stores/socket_store.jsx

@@ -176,6 +176,7 @@ function handleNewPostEvent(msg) {
             mentions = JSON.parse(msg.props.mentions);
         }
 
+        const channelType = msgProps.channel_type;
         const channel = ChannelStore.get(msg.channel_id);
         const user = UserStore.getCurrentUser();
         const member = ChannelStore.getMember(msg.channel_id);
@@ -187,7 +188,7 @@ function handleNewPostEvent(msg) {
 
         if (notifyLevel === 'none') {
             return;
-        } else if (notifyLevel === 'mention' && mentions.indexOf(user.id) === -1 && channel.type !== 'D') {
+        } else if (notifyLevel === 'mention' && mentions.indexOf(user.id) === -1 && channelType !== Constants.DM_CHANNEL) {
             return;
         }