验证角色和Passport.js进行身份验证

问题描述

因此，我想在API中进行一些路由，这些路由将根据在MongoDB中定义的用户角色显示不同的数据.这是我现在拥有的示例，它可以正常工作...

So I'd like to make some routes in an API that will show different data based on the user role, defined in MongoDB. Here's a sampling of what I have right now, it works...

router.get('/test', passport.authenticate('bearer', {session: false}), function (req, res) {
    if (req.user.role == "premium") {
        return res.send('you can see this content');
    }
    else {
        return res.send('you can not see this content');
    }
})

但是，最终目标是向用户提供至少内容，即使用户未登录或没有使用正确的角色进行身份验证.

However, the end goal is to present at least something to the user, even if they're not logged in or authenticated with the right kind of role.

router.get('/test', passport.authenticate('bearer', {session: false}), function (req, res) {
    if (req.user.role == "premium") {
        return res.send('this is premium content');
    }
    else {
        // could be hit by another role, or no user at all
        return res.send([some truncated version of the premium content]);
    }
})

我想我会找出方法，但是我不知道如何指定在请求中没有任何Authorization标头的情况下可能会被击中的相同路由.

Which I would think I'd figure out how to work, but I don't know how to specify the same route which possibly could be hit without any Authorization header in the request.

在Passport.js/Express中可以吗?

Is this possible in Passport.js/Express?

推荐答案

我建议您使用HTTP状态代码和错误对象，这是一种常见的API约定，它使您的API用户可以了解正在发生的事情以及原因:

I would suggest that you use HTTP status codes and an error object, this is a common API convention and it allows your API users to know what's happening and why:

app.get('/premium-resource', function(req, res, next) {
  passport.authenticate('bearer', function(err, user) {
    if (user){
      if (user.role === 'premium'){
        return res.send(200,{userContent:'you are a premium user'});
      }else{
        return res.send(403,{
          'status': 403,
          'code': 1, // custom code that makes sense for your application
          'message': 'You are not a premium user',
          'moreInfo': 'https://myawesomeapi.io/upgrade'
        });
      }
    }else{
      return res.send(401,{
        'status': 401,
        'code': 2, // custom code that makes sense for your application
        'message': 'You are not authenticated.',
        'moreInfo': 'https://myawesomeapi.io/docs'
      });
    }
  })(req, res, next);
});

免责声明:我在 Stormpath 工作，我们在API身份验证和设计方面投入了很多思想，我们做了一个非常真实的演示关于主题:

Disclaimer: I work at Stormpath and we put a lot of thought into API authentication and design, we have a really presentation on the topic:

https://stormpath.com/blog/designing-rest-json-apis/

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