EmberJS 路由器暂停Promises
描述
promise有助于获得其中的转移，并开始解析下一个路由的模型。每个路由的setupController钩子都满足promises的值。
语句
Ember.Route.extend({ model: function() { return new Ember.RSVP.Promise(function(param) { Ember.run.later(function() { param({ msg: "values" }); } }); }, setupController: function(controller, model) { //display message model.param } });
例子
<!DOCTYPE html> <html> <head> <title>Emberjs The Router Pauses for Promises</title> <!-- CDN's --> <script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/3.0.1/handlebars.min.js"></script> <script src="https://code.jquery.com/jquery-2.1.3.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.10.0/ember.min.js"></script> <script src="https://builds.emberjs.com/tags/v1.10.0-beta.3/ember-template-compiler.js"></script> <script src="https://builds.emberjs.com/release/ember.debug.js"></script> <script src="https://builds.emberjs.com/beta/ember-data.js"></script> </head> <body> <b>Waiting for promises.......</b> <hr/> <script type="text/x-handlebars"> {{outlet}} </script> <script type="text/x-handlebars" data-template-name="index"> {{model.msg}} </script> <script type="text/javascript"> App = Ember.Application.create(); App.IndexRoute = Em.Route.extend({ //defining model with promises model: function() { //RSVP.js is an implementation of Promises return new Ember.RSVP.Promise(function(resolve) { Ember.run.later(function() { //promises message resolve({ msg: "Promise Message..." }); }, 3000);//time in mili sec to display promise }); } }); </script> </body> </html>
输出
让我们执行以下步骤，看看上面的代码如何工作：
将上面的代码保存在routing_prom.html文件中
在浏览器中打开此HTML文件。