本文介绍了如何模拟慢速 Meteor 发布?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试模拟一个出版物,它做了大量工作并需要很长时间才能返回游标.
I'm trying to simulate a publication doing a bunch of work and taking a long time to return a cursor.
我的发布方法强制休眠(使用未来),但应用始终只显示
My publish method has a forced sleep (using a future), but the app always displays only
这是出版物:
Meteor.publish('people', function() {
Future = Npm.require('fibers/future');
var future = new Future();
//simulate long pause
setTimeout(function() {
// UPDATE: coding error here. This line needs to be
// future.return(People.find());
// See the accepted answer for an alternative, too:
// Meteor._sleepForMs(2000);
return People.find();
}, 2000);
//wait for future.return
return future.wait();
});
和路由器:
Router.configure({
layoutTemplate: 'layout',
loadingTemplate: 'loading'
});
Router.map(function() {
return this.route('home', {
path: '/',
waitOn: function() {
return [Meteor.subscribe('people')];
},
data: function() {
return {
'people': People.find()
};
}
});
});
Router.onBeforeAction('loading');
完整源代码:https://gitlab.com/meonkeys/meteor-simulate-slow-publication
推荐答案
最简单的方法是使用未记录的 Meteor._sleepForMs
函数,如下所示:
The easiest way to do this is to use the undocumented Meteor._sleepForMs
function like so:
Meteor.publish('people', function() {
Meteor._sleepForMs(2000);
return People.find();
});
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