req.app

This property holds a reference to the instance of the Express application that is using the middleware.

If you follow the pattern in which you create a module that just exports a middleware function and require() it in your main file, then the middleware can access the Express instance via req.app

For example:

//index.js
app.get('/viewdirectory', require('./mymiddleware.js'))

//mymiddleware.js
module.exports = function (req, res) {
  res.send('The views directory is ' + req.app.get('views'));
});

Links:

http://expressjs.com/en/4x/api.html#req.app

doc_Express

2025-01-10 15:47:30

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