Angular 2可以激活异步 [英] Angular 2 canActivate async

问题描述

我有一项服务可以检查用户是否具有打开路线的权限.

I have a service which checks does user has permissions to open route.

@Injectable()
export class GuardService implements CanActivate{
     user: User;
     constructor(private _userService: UserService) {
}

canActivate(): any{
    return this._userService.getUser().subscribe(user => {
        if(user.user_type == 'admin'){
            return true;
        }
        return false;
    });
}

但是问题是它永远不会过去.问题在于这是可观察到的，但我不知道该如何处理.我怎样才能做到这一点?预先感谢

But the problem is that it never passes. The problem is in this observable but I don't know how to handle it. How can I achieve this? Thanks in advance

推荐答案

通过将 subscribe 更改为 map

canActivate(): any{
    return this._userService.getUser().map(user => {
        if(user.user_type == 'admin'){
            return true;
        }
        return false;
    }); // <<== added
}

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