[英]Build new instance of component from parent component and inject it into DOM? - Ember
我正在构建一个简单的Web应用程序,当用户按下按钮时,该应用程序将生成组件的新实例并将其添加到页面中。
但是,我不确定如何从父组件的.js文件中生成组件的新实例。
模板:
{{yield}}
<div class="feed-tracks-container">
{{#each model.tracks as |track|}}
{{#feed-card track=track}}{{/feed-card}}
{{/each}}
</div>
<div class="feed-controls-container">
<div class="feed-control-container" style="width:25%" {{action (route-action "undoLastAction" track)}}>
<img src="images/undo-btn.png"/>
</div>
<div id="skip-btn" class="feed-control-container" style="width:25%" {{action (route-action "skipTrack" track)}}>
<img src="images/skip-btn.png"/>
</div>
<div id="share-btn" class="feed-control-container" style="width:25%" {{action (route-action "shareTrack" track)}}>
<img src="images/share-btn.png"/>
</div>
<div class="feed-control-container" style="width:25%" {{action (route-action "togglePreview" track)}}>
<img src="images/preview-inactive-btn.png"/>
</div>
</div>
路线:
import Ember from 'ember';
export default Ember.Route.extend({
model: function() {
return {
tracks: [
{
id: 1,
track_name: "Karate",
artist_name: "R3hab",
track_length: 230,
share_count: 10864,
background_img: "https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcR3oh8ADMDG3hVZ1I_9IJumqLXJNS2-TBPrxpUdRL8J_71H5I0kyw",
waveform_img: "http://i.imgur.com/kP6KCJl.png"
},
{
id: 2,
track_name: "Care",
artist_name: "R3hab",
track_length: 230,
share_count: 1322,
background_img: "https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcS5OsXpnek1SMJzol7hYnRt9QjNEHwPf1InRAKwoWocZWvMzPqo0w",
waveform_img: "http://i.imgur.com/8o0AdWk.png"
},
{
id: 3,
track_name: "Soundwave",
artist_name: "R3hab",
track_length: 230,
share_count: 14554,
background_img: "http://www.music-bazaar.com/album-images/vol17/800/800095/2652999-big/Soundwave-Extended-Mix-Single-cover.jpg",
waveform_img: "http://i.imgur.com/8o0AdWk.png"
}
]
}
},
actions: {
skipTrack: function() {
var new_track = {
id: 6,
track_name: "I'm new!",
artist_name: "R3hab",
track_length: 230,
share_count: 14554,
background_img: "http://www.music-bazaar.com/album-images/vol17/800/800095/2652999-big/Soundwave-Extended-Mix-Single-cover.jpg",
waveform_img: "http://i.imgur.com/8o0AdWk.png"
}
var tracks = this.modelFor('feed').tracks;
tracks.shift();
tracks.pushObject(new_track);
},
shareTrack: function() {
console.log("sharing");
}
},
});
解答将新对象插入数组时,我没有使用pushObject
。
//template
{{#each componentNames in componentName}}
{{component componentName data=data}}
{{/each}}
在您的控制器中更改componentNames属性。 当您添加到componentNames数组时,应该呈现一个新组件。
编辑控制器的交换组件,它回答了您的问题。
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