用于res.send的Express.js中间件，在每个res.send（）上调用函数

Question

Currently I am making api's with express.js and

I want to send common response format like this :

res.send({status : 'suceess' , msg : '' , data : [] });

From all the controllers (functions handling my routes)

---

What I have tried :

in someController.js

someFuntion(req,res,next)
{
    // these two lines will be in each controller , that I don't want
    // want it to be automated , and minimal as much as possible
    res.body({status : 'suceess' , msg : '' , data : [] });
    next();
}

in middleware.js strong text

functions responseHandler(req,res)
{
    // perform some operation with req.body
    res.send(req.body);
}

in server.js

app.use('/',someFuntion);
app.use(responseHandler);

---

I just don't want to repeat same json format in all the controllers , is there any better way to do it ?

Answer 1

Why not you use a file which take res and the input data to send . Suppose you create a file

responseHandler.js

module.exports = function (res , data){

   res.send({status:data.status,msg:data.msg,data:data.data});
};

controller.js

var response = require("responseHandler");

someFuntion(req,res,next)
{
    // these two lines will be in each controller , that I don't want
    // want it to be automated , and minimal as much as possible
   // res.body({status : 'suceess' , msg : '' , data : [] });
    data.status = 'sucess';
    data.msg='';
    data.data=[];
    response(res,data)
    next();
}

You can use this approach and can better optimize it . I have used this approach. You can use two function in responsehandler file one for error and one for current data.