我有一个由Rails后端提供的消息列表。我需要的是当按下“toggle_visibility”动作按钮时,它将切换“public_viewable”属性。这意味着,进行相应的REST调用(以实现数据库)并更改相应的缓存消息的状态。这是我到目前为止的地方。
这是我到目前为止所做的,它设法最终在调试控制台上:
# app.js
App.Store = DS.Store.extend({
revision: 12,
adapter: DS.RESTAdapter.extend({
url: 'http://localhost:3000'
})
});
App.Message = DS.Model.extend({
body: DS.attr('string'),
mobile_number: DS.attr('string'),
publicly_viewable: DS.attr('boolean'),
created_at: DS.attr('date')
});
App.Router.map(function() {
this.resource('messages');
});
App.MessagesRoute = Ember.Route.extend({
model: function() { return App.Message.find() }
});
App.MessagesController = Ember.ArrayController.extend({
toggle_visibility: function(){
debugger;
}
});
# index.html
{{#each model}}
<button class="close" {{action toggle_visibility this}}><i class="icon-eye-close"></i></button>
<p class="message_body lead">{{body}}</p>
<small class="source_number">from {{mobile_number}}, received {{date created_at}}</small>
{{/each}}
我过去几个小时一直在阅读Ember指南,虽然我已经了解 那些不同的课程,但我仍然无法清楚地想象如何去关于它。特别是,我不确定这应该是路由问题还是控制器,我知道如果它是控制器的责任,我知道它应该在ObjectController上,但我一直无法使它工作。
答案 0 :(得分:2)
您可以使用ArrayController#itemController
并为ModelArray
中的单个记录定义控制器。然后,您必须在Array Controller中指定负责单个对象的Object Controller,您必须在Handlebars中引用它。你可以这样做:
JS:
App.MessageController = Ember.ObjectController.extend({
visibilityClass: function() {
var visibility = this.get('model.publiclyViewable');
return 'toggle-visibility mdi-action-visibility%@'.fmt(
visibility ? '':'-off'
);
}.property('model.publiclyViewable'),
actions: {
toggleVisibility: function() {
var model = this.get('model');
model.toggleProperty('publiclyViewable');
model.save();
}
}
});
车把:
<script type="text/x-handlebars" data-template-name="messages">
<!--
At this point the {{each}} helper will know how to lookup for
the controller simply by it's name
-->
{{#each model itemController="message"}}
<div class="panel panel-primary">
<div class="panel-heading">
<div class="pull-left">
<h3 class="panel-title">{{title}}</h3>
</div>
<div class="pull-right">
<a {{action 'toggleVisibility'}}>
<i class={{visibilityClass}} style="color: #FFF"></i>
</a>
</div>
</div>
<div class="panel-body">
{{body}}
</div>
<div class="panel-footer">
<i class="mdi-communication-quick-contacts-dialer"></i> {{mobileNumber}}
<i class="mdi-notification-event-note"></i> {{createdAt}}
</div>
</div>
{{/each}}
</script>
(见fiddle)
注意:已更新为Ember 1.11.x-beta并稍微更改了代码