when a channel is update propagate the channel to everybody (#6677)

webapp/actions/websocket_actions.jsx

@@ -186,6 +186,10 @@ function handleEvent(msg) {
         handleChannelDeletedEvent(msg);
         break;
 
+    case SocketEvents.CHANNEL_UPDATED:
+        handleChannelUpdatedEvent(msg);
+        break;
+
     case SocketEvents.DIRECT_ADDED:
         handleDirectAddedEvent(msg);
         break;
@@ -358,6 +362,11 @@ function handleUserRemovedEvent(msg) {
     }
 }
 
+function handleChannelUpdatedEvent(msg) {
+    const channel = JSON.parse(msg.data.channel);
+    dispatch({type: ChannelTypes.RECEIVED_CHANNEL, data: channel});
+}
+
 function handleUserUpdatedEvent(msg) {
     const user = msg.data.user;
     if (UserStore.getCurrentId() !== user.id) {

webapp/utils/constants.jsx

@@ -222,6 +222,7 @@ export const SocketEvents = {
     POST_DELETED: 'post_deleted',
     CHANNEL_CREATED: 'channel_created',
     CHANNEL_DELETED: 'channel_deleted',
+    CHANNEL_UPDATED: 'channel_updated',
     CHANNEL_VIEWED: 'channel_viewed',
     DIRECT_ADDED: 'direct_added',
     NEW_USER: 'new_user',