我正在使用iron：router v1.0.7，但是this.render（）是“ undefined”。 我看不到我在做什么

Question

I'm displaying an access denied template when the visitor tries to visit the Submit page. This works fine. Here is the code:

Router.route('/', {name: 'etoeventsList'});
Router.route('/submit', {name: 'etoeventSubmit'});

var requireLogin = function () {
  if (!Meteor.user()) {
    this.render('accessDenied');
  } else {
    this.next();
  }
};

Router.onBeforeAction(requireLogin, {only: 'etoeventSubmit'});

I want to utilize "requireLogin" under a different context (anonymous user visiting '/') so I thought I would add an argument to allow me to pass in the template to be rendered. Like this:

var requireLogin = function (template) { // now with argument 'template'
  if (!Meteor.user()) {
    this.render(template); // using 'template'
  } else {
    this.next();
  }
};

Router.onBeforeAction(requireLogin('accessDenied'), {only: 'etoeventSubmit'}); // passing 'accessDenied'
Router.onBeforeAction(requireLogin('index'), {only: 'etoeventsList'}); // passing 'index'

The error I receive is Uncaught TypeError: undefined is not a function and the template I want to show does not display.

Answer 1

You can't do it that way. The way you are doing it, this will refer to Window . You will have to use an anonymous function as a param to onBeforeAction .

Router.configure({
    layoutTemplate: 'layout',
    loadingTemplate: 'loading',
    notFoundTemplate: 'notFound',
    waitOn: function() {

    }
});

if(Meteor.isClient) {
  Router.onBeforeAction(function() {
    // is user logged in
    if (! Meteor.user()) {
      if (Meteor.loggingIn()) {
        this.render('loading');
      } else {
        this.render('accessDenied');
      }
    } else {
      this.next();
    }
  });
}