How to create dynamic subdomains for each user using node express?

问题

On signup, I want to give user his profile and application at username.example.com I have already created wild-card dns at my domain provider website.

How can I do that?

回答1:

If using Node.js with Express.js, then:

router.get('/', function (req, res) { 
    var domain = req.get('host').match(/\w+/); // e.g., host: "subdomain.website.com"
    if (domain)
       var subdomain = domain[0]; // Use "subdomain"
    ...
});

回答2:

// you can use this implementation to get subdomain dynamically
// Use below code to get your subdomain name
// get your dynamic subdomain

app.use((req, res, next) => {
  if (!req.subdomains.length || req.subdomains.slice(-1)[0] === 'www') return next();
  // otherwise we have subdomain here
  var subdomain = req.subdomains.slice(-1)[0];
  // keep it
  req.subdomain = subdomain;
  next();
});


// conditional render a page
app.get('/', (req, res) => {
  // no subdomain
  if (!req.subdomain) {
    // render home page
    // mydomain.com
    res.render('home');
  } else {
    // render subdomain specific page
    // mypage.mydomain.com
    res.render('mypage');
  } // you can extend this else logic to render the different subdomain specific page
});


> Note: to test this locally. you can use Nginx reverse proxy to forward your test url req to your local server and do not forget to point your test url to your local host 127.0.0.1 in your hosts file of your machine

来源：https://stackoverflow.com/questions/22319354/how-to-create-dynamic-subdomains-for-each-user-using-node-express

标签

node.js

dynamic

subdomain