Answers for "Express use middleware for specific routes"

1

Express use middleware for specific routes

router.get('/route', middleware1, middleware2, ..., middlewareX)
Posted by: Guest on July-19-2021
3

what is app.use() used for

//app.get will see only exact match ex.> "/book" here app.get will not allow /book/1, etc 
//but app.use is different see below

//what is difference between app.use and app.all
//app.use takes only 1 callback while app.all takes multiple callbacks
//app.use will only see whether url starts with specified path But, app.all() will match the complete path

app.use( "/book" , middleware);
// will match /book
// will match /book/author
// will match /book/subject

app.all( "/book" , handler);
// will match /book
// won't match /book/author   
// won't match /book/subject    

app.all( "/book/*" , handler);
// won't match /book        
// will match /book/author
// will match /book/subject
Posted by: Guest on June-16-2020
0

express router add middleware

var app = require("express")();

//This is the middleware function which will be called before any routes get hit which are defined after this point, i.e. in your index.js
app.use(function (req, res, next) {

  var authorised = false;
  //Here you would check for the user being authenticated

  //Unsure how you're actually checking this, so some psuedo code below
  if (authorised) {
    //Stop the user progressing any further
    return res.status(403).send("Unauthorised!");
  }
  else {
    //Carry on with the request chain
    next();
  }
});

//Define/include your controllers
Posted by: Guest on October-09-2021

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