meteor__coursera-meteor-2/client/routes.js

Meteor.subscribe("users");
let chatManager = new ChatManager(Chats);

// set up the main template the the router will use to build pages
Router.configure({
  layoutTemplate: "ApplicationLayout"
});

// specify the top level route, the page users see when they arrive at the site
Router.route("/", function () {
  console.log("Routing root /");
  this.render("navbar", { to: "header" });
  this.render("lobby_page", { to: "main" });
});

// specify a route that allows the current user to chat to another users
Router.route("/chat/:_id", {
  subscriptions: function () {
    // Meteor._debug("Subscriptions");
    return Meteor.subscribe("chats");
  },

  action: function (req) {
    // Meteor._debug("Action", req.url);
    if (this.ready()) {
      console.log("- Now ready");

      // The user they want to chat to has id equal to the id sent in after /chat/...
      const otherUserId = this.params._id;
      const myId = Meteor.userId();
      chatManager.assignChatId(myId ? myId : "anon", otherUserId ? otherUserId : "anon", Session);
      if (Session.get("chatId")) {
        this.render("navbar", { to: "header" });
        this.render("chat_page", {
          to: "main",
          data: function () {
            const other = Meteor.users.findOne({ _id: otherUserId });
            // console.log("-- Routing data, other: " + (other ? other.profile.username : "not available"));
            return {
              other: other
            };
          }
        });
      }
      else {
        this.render("navbar", { to: "header" });
        this.render("Error", {
          to: "main",
          data: new Meteor.Error("no-chat", `Could not find a chat between ${myId} and ${otherUserId}.`)
        });
      }
    }
    else {
      console.log("- Not yet ready");
      this.render("Loading");
    }
  }
});