promise有助于獲得其中的轉(zhuǎn)移,并開始解析下一個路由的模型。每個路由的setupController鉤子都滿足promises的值。
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 } });
<!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>
讓我們執(zhí)行以下步驟,看看上面的代碼如何工作:
將上面的代碼保存在routing_prom.html文件中
在瀏覽器中打開此HTML文件。
更多建議: