努力等待订阅和多个订阅 [英] struggling to wait on subscriptions and multiple subscriptions

问题描述

我真的在为铁路由器waitOn苦苦挣扎.

i am really struggling with the iron-router waitOn.

我有很多要等待的订阅，在我看来铁路由器正在等待任何事情.

I have a number of subscriptions that i would like to waitOn, it doenst seem to me that iron router is waiting on anything.

我已经设置了许多订阅(main.js)，我希望在应用程序启动之前加载这些订阅:

I have setup a number of subscriptions (main.js), which i would like to load before the application starts:

Meteor.subscribe("appointments");
Meteor.subscribe("business");
Meteor.subscribe("clients");
Meteor.subscribe("staff"); 

我已经尝试了几乎所有可能的配置，但似乎无法让"loader"显示出来并等待所有订阅准备就绪.我在layoutTemplate('layout')中有一个辅助函数，用于从数据库中获取值，但是findOne()返回undefined/null，我认为这是因为路由器尚未等待订阅...

I have tried almost every configuration i possibly can but i cannot seem to get the "loader" to show itself and wait till all the subscriptions are ready. I have a helper function in the layoutTemplate ('layout') to get a value from the database however findOne() returns undefined/null i assume this is because the router has not waited on the subscriptions...

我的路由器配置.我想了解如何链接依赖项或创建依赖项以等待.

My router configuration. I would like to understand how i can chain the dependencies or create the dependencies to wait.

Router.configure({
    layoutTemplate: 'layout',

    loadingTemplate: 'loading',
    waitOn: function () {
        console.log('Iron router start');
        this.subscribe('clients').wait();
        this.subscribe('staff').wait();
        this.subscribe('appointments').wait();
        this.subscribe('business').wait();
        this.subscribe('calendar').wait();


    },
    action: function() {
        if (this.ready()) {
            this.render('dashboard');
        } else {
            this.render('loading');
        }
    }
});

推荐答案

尝试像这样更改waitOn部分.另外，我认为您可以从main.js文件中删除订阅，并在该特定路由的路由器waitOn函数中写入所需/相关的订阅.

Try changing the waitOn section like this. Also, I think you can remove the subscriptions from the main.js file and write the required/dependent subscriptions in the router's waitOn function for that particular route.

Router.configure({
    layoutTemplate: 'layout',
    loadingTemplate: 'loading',
    waitOn: function () {
        console.log('Iron router start');
        return [        
            Meteor.subscribe('clients'),
            Meteor.subscribe('staff'),
            Meteor.subscribe('appointments'),
            Meteor.subscribe('business'),
            Meteor.subscribe('calendar')
        ]

    },
    action: function() {
        if (this.ready()) {
            this.render('dashboard');
        } else {
            this.render('loading');
        }
    }
});

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