在Backbone视图中呈现reCAPTCHA v2.0小部件 [英] Rendering reCAPTCHA v2.0 widget within Backbone view

问题描述

这是我的问题，我有一个index.html页面，它显式加载reCAPTCHA脚本：

This is my issue, I have an index.html page which loads the reCAPTCHA script explicitly:

<script src="https://www.google.com/recaptcha/api.js?onload=loadCaptcha&render=explicit" async defer></script> 

我有一个包含reCAPTCHA容器元素（div）的模板：

I have a template which contains the reCAPTCHA container element (div):

<form id="payment-<%= model.Id %>" class="form" action="" method="POST">
    ...
    <div class="captcha-container"></div> //not being used yet
</form>

我有一个骨干视图，它将模板注入index.thml：

And I have a backbone view which injects the template into index.thml:

'use strict';
var Backbone = require('Backbone');

var Validation = require('backbone-validation');
Backbone.Validation = Validation;
Backbone.$ = $;

module.exports = BaseView.extend({
    events: {},
    formView: null,
    initialize: function (options) {
       var loadCaptcha = function() {
            window.alert('captcha is ready');
        };
    },
    render: function () {
       // renders view using my form template
    }
});

此时我甚至无法触发回调函数（loadCaptcha），我怀疑是问题在于加载顺序，索引页面被加载，并且onload = loadCaptcha事件发生在骨干视图初始化之前。我试过从脚本标签中删除async属性，但没有运气。有关如何使其工作的任何想法？

At this point I'm unable to even trigger the callback function (loadCaptcha), my suspicion is that the issue lies in the load order, the index page is loaded and the "onload=loadCaptcha" event occurs before the backbone view is initialized. I've tried removing the "async" property from the script tag, but no luck. Any ideas of how I can get this to work?

推荐答案

我通过直接从呈现它的视图中拉回recaptcha脚本来找出解决方案。希望这有助于将来。

I figured out the solution, by pulling in the recaptcha script directly from the view which renders it. Hope this helps someone in the future.

loadCaptcha: function() {
    var self = this;
    var getRecaptchaResponse = function(response) {
      self.captchaResponse = response;
    };

    var renderCaptcha = function() {
      self.captchaWidgetId = grecaptcha.render('recaptcha-container-' + self.model.get('Id'), {
          sitekey : service.settings.recaptchaSiteKey,
          callback: getRecaptchaResponse
      });
    };

    window.renderCaptcha = renderCaptcha;

    $.getScript('https://www.google.com/recaptcha/api.js?onload=renderCaptcha&render=explicit', function() {});
},

这篇关于在Backbone视图中呈现reCAPTCHA v2.0小部件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！