c2FcHuVN

1module.exports.loginUser = (req,res,next) => {
2    User.find({email: req.body.email})
3        .then( user => {
4            if(user.length < 1) {
5                res.status(401).json({
6                    message: "Auth failed"
7                })
8            }
9            bcrypt.compare(req.body.password,user[0].password, (err,result) => {
10                if(err) {
11                    res.status(401).json({
12                        message: "Auth failed"
13                    })
14                }
15                if(result) {
16                    const token = jwt.sign({
17                        email: req.params.email
18                    }, "secret_key", { expiresIn: "
19					/*
20						return res.status(200).json({
21                        	message: "Auth Successful",
22                        	token: token
23                    	})
24						or
25				
26						res.status(200).json({
27                        	message: "Auth Successful",
28                        	token: token
29                    	})
30						อันนี้มี error 	
31_http_outgoing.js:491
32    throw new Error('Can\'t set headers after they are sent.');
33     ^
34
35Error: Can't set headers after they are sent.
36    at validateHeader (_http_outgoing.js:491:11)
37    at ServerResponse.setHeader (_http_outgoing.js:498:3)
38    at ServerResponse.header (C:\Users\ad\Desktop\React\food\node_modules\express\lib\response.js:767:10)
39    at ServerResponse.send (C:\Users\ad\Desktop\React\food\node_modules\express\lib\response.js:170:12)
40    at ServerResponse.json (C:\Users\ad\Desktop\React\food\node_modules\express\lib\response.js:267:15)
41    at bcrypt.compare (C:\Users\ad\Desktop\React\food\routes\api\Users.js:32:33)
42[nodemon] app crashed - waiting for file changes before starting...
43
44*/
45				}
46				res.status(401).json({
47                    message: "Auth failed"
48                })
49            })
50        })
51        .catch( err => {
52            res.status(401).json({
53                message: "Auth failed"
54            })
55        })
56		}