从余烬组件生命周期挂钩中，如何确定该组件是否以块形式被调用？

Question

Per the Ember guides , you can determine if a component is being rendered in block format from within the template using the hasBlock keyword:

// foo-component.hbs
{{#if hasBlock}}
block mode
{{else}}
something else
{{/if}}

How do I do this from within foo-component.js ?

import Ember from 'ember';

 export default Ember.Component.extend({
         didInitAttrs: function() {
                 // hasBlock is not defined here
                 if ( this.get('hasBlock') ) {

                 }
         }
 });

Answer 1

You could check for template property of Component, but such behavior is deprecated:

if (this.get('template')) {
   console.log('Component has block!');
}

Working demo.

Answer 2

根据sbatson的评论，不支持在模板中使用hasBlock 。