Ember-Data:了解RecordArray何时完全填充 [英] Ember-Data: Knowing when a RecordArray is completely populated
问题描述
示例代码(coffeescript):
@set('followRequests',App.FollowRequests.find())
...
whenDataLoads:( - >
console.log @get('followRequests.isLoaded')
控制台。 log @get('followRequests.length')
@set('content',@get('followRequests')。toArray())
).observes('followRequests.isLoaded' )
第一个日志语句为真,第二个为0,使用该数据的模板为空。当我看到实际的AJAX请求时,我看到请求确实返回一个记录数组。并且RecordArray的长度和内容会稍后改变,如浏览器控制台所示:
App.Router.myController.get ('followRequests')get('length')
---> 12
然而,这段代码(下面)模板,但它运行12次...
whenDataLoads:( - >
console.log @get ('followRequests.isLoaded')
console.log @get('followRequests.length')
@set('content',@get('followRequests')toArray())
).observes('followRequests.length')
什么是正确的知道RecordArray何时完全填充的方式...?
自从Ember.js使用承诺之后,您可以这个
App.FollowRequests.find()。then(function(){
//这个回调将会触发数组被加载
});
I have a situation where isLoaded on a DS.RecordArray changes to true but the content, length property of the RecordArray is still empty, 0 at that time and only changes later.
Sample Code(coffeescript):
@set('followRequests', App.FollowRequests.find())
...
whenDataLoads: (->
console.log @get('followRequests.isLoaded')
console.log @get('followRequests.length')
@set('content', @get('followRequests').toArray() )
).observes('followRequests.isLoaded')
The first log statement is true while the second is 0 and the template which uses this data is empty. When I see the actual AJAX request I see that the request does return an array of records. And the length and content of the RecordArray do change some time later as seen in the Browser console by doing:
App.Router.myController.get('followRequests').get('length')
---> 12
However this code(below) does populate the content in the template, but it runs 12 times...
whenDataLoads: (->
console.log @get('followRequests.isLoaded')
console.log @get('followRequests.length')
@set('content', @get('followRequests').toArray() )
).observes('followRequests.length')
What's the right way to know when the RecordArray is completely populated...??
Since the time Ember.js uses promises you can do this
App.FollowRequests.find().then(function () {
// This callback will fire when array is loaded
});
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