我正在使用Ember和Ember-Data的最新代码。我有导轨作为我的后端提供JSON,这是正常的。我希望能够使用我视图中的复选框过滤Ember模型的“active”属性。我希望复选框只显示active = true的数据,如果我勾选复选框。我不想删除数组中的数据,只是隐藏数据。这就是我目前所拥有的,但它不起作用。
型号:
App.Org = DS.Model.extend({
code: DS.attr('string', { defaultValue: 'N/A' }),
name: DS.attr('string', { defaultValue: 'N/A' }),
source: DS.attr('string', { defaultValue: 'N/A' }),
status: DS.attr('string', { defaultValue: 'N/A' }),
type: DS.attr('string', { defaultValue: 'N/A' }),
note: DS.attr('string', { defaultValue: 'N/A' }),
financial_Flag: DS.attr('string', { defaultValue: 'N/A' }),
expense_Flag: DS.attr('string', { defaultValue: 'N/A' }),
revenue_Flag: DS.attr('string', { defaultValue: 'N/A' }),
created_At: DS.attr('string', { defaultValue: 'N/A' }),
updated_At: DS.attr('string', { defaultValue: 'N/A' }),
active: function() {
var status = this.get('status');
var active = (status === 0) ? false : true;
console.log("status: " + status + " | active: " + active);
return active;
}.property('status')
}).reopenClass({
collectionUrl: '/orgs',
resourceUrl: '/orgs/%@',
resourceName: 'org'
});
ArrayController:
App.OrgsController = Em.ArrayController.extend({
isEmpty: function() {
console.log("############ App.OrgsController.isEmpty called");
return this.get('length') === 0;
}.property('length'),
toggleActive: function(){
console.log("############ App.OrgsController.isActive called");
return this.filterProperty('active', value).forEach(this.removeObject, this);
}.property('@each.active'),
init: function() {
this.set('content', App.store.findAll(App.Org));
},
refreshOrgs: function() {
this.set('content', App.store.findAll(App.Org));
},
getInactiveOrgs: function(){
this.set('content', App.store.find(App.Org, {status: "0"}));
}
});
在我看来,我有:
<label>
isActive
{{view Ember.Checkbox checkedBinding="App.OrgsController.toggleActive" disabledBinding="App.OrgsController.isEmpty" }}
</label>
答案 0 :(得分:7)
这可以通过创建一个计算属性来实现,该属性根据绑定到复选框的布尔值返回整个集合或仅返回项目的子集。例如,
App.Post = DS.Model.extend({
text: DS.attr('string'),
active: DS.attr('boolean')
});
App.IndexRoute = Ember.Route.extend({
model: function() {
return App.Post.find();
}
});
App.IndexController = Ember.ArrayController.extend({
hideInactive: false,
filteredContent: function() {
var content = this.get('content');
if (!content || !this.get('hideInactive'))
return content;
return content.filter(function(item) {
return item.get('active');
});
}.property('content.isLoaded', 'hideInactive')
});
您的模板应如下所示:
<script type="text/x-handlebars" data-template-name="index">
<p>{{view Ember.Checkbox checkedBinding="hideInactive"}} Hide Inactive Posts</p>
<br/>
{{#each filteredContent}}
<p>{{text}}</p>
{{/each}}
</script>
如果active
被定义为计算属性,这也将起作用,如您的示例所示。