Aurelia:在路由器的管道步骤中,如何将变量绑定到该路由器？

Question

我想传递用户,在发现AuthorizeStep要么对App class,然后到home module.

这就是我所拥有的:

export class App {
    configureRouter(config, router) {
        config.addPipelineStep('authorize', AuthorizeStep); 
        config.map([
            {route: ['', ':filter'], name: "", moduleId: 'welcome'}
            {route: 'home', name: "home", moduleId: 'home' auth:true}
        ]);
        this.router = router;
    }
}

class AuthorizeStep {
    run(routingContext, next) {
        if (routingContext.nextInstructions.some(i => i.config.auth)) {
            this.client.get('auth/login')
                .then(response => {
                    this.user = response.content;
                });
        }
        return next();
    }
}

Answer 1

在我的应用程序中,我创建了一个名为AuthContext的类,其中包含currentUser属性.您可以将其注入AuthorizeStep的构造函数中,然后将其注入需要它的任何其他模型中.就像是...

import {AuthContext} from './auth-context';

export class App {
    static inject() { return [AuthContext];}

    constructor(authcontext){
        this.authContext = authcontext;
    }

    configureRouter(config, router) {
         config.addPipelineStep('authorize', AuthorizeStep); 
         config.map([
            {route: ['', ':filter'], name: "", moduleId: 'welcome'}
            {route: 'home', name: "home", moduleId: 'home' auth:true}
        ]);
        this.router = router;
    }
}

class AuthorizeStep {
    static inject() { return [AuthContext];}

    constructor(authcontext){
        this.authContext = authcontext;
    }
    run(routingContext, next) {
        if (routingContext.nextInstructions.some(i => i.config.auth)) {
            this.client.get('auth/login')
                .then(response => {
                    this.authcontext.user = response.content;
                });
        }
        return next();
    }
}

Answer 2

我一直在做类似的事情，但我发现我不能依赖在authcontext附加视图模型时在其他视图模型中填充。返回由 the 返回的承诺get，然后next()在 the 的分辨率内返回get似乎解决了这个问题，这个想法是在解决这个问题之前不要进行下一个管道步骤。将其应用于@JamesCarters的答案，我会得到以下（未经测试的）代码：

class AuthorizeStep {
    static inject() { return [AuthContext];}

    constructor(authcontext){
        this.authContext = authcontext;
    }
    run(routingContext, next) {
        if (routingContext.nextInstructions.some(i => i.config.auth)) {
            return this.client.get('auth/login')
                .then(response => {
                    this.authcontext.user = response.content;
                    return next();
                });
        }
        else {
            return next();
        }
    }
}