在 Node.js 中使用 require 传递对象和变量

Question

I am working on moving routing methods from app.js to separate files.

I managed to do it using (in app.js ):

var userRoutes = require('./serverRoutes/userRoutes');
app.use('/userRoutes', userRoutes);
app.post('/user/login', userRoutes);

I can see that routing is being done.

I have some variables in my app.js like:
- tokens array
- jwtSecretKey string
- jwt encryption module
- User which is mongoose schema

I would like to pass them and make them usable by routing methods inside userRoutes.js file.

I do not know how to do it.

Another question.

I also have some 'helper' type methods I would like to use in different 'routing' files.

I do not know how to pass them either.

This is how I deal with 'routing' files:

var express = require('express');
var router = express.Router();

router.post('/user/login', function (request, response) {
    var email = request.body.email;
    var password = request.body.password;

    User.findOne({ email: email, password: password },
        function (err, user) {
            if (err)
                response.send(err);

            if (user) {
                var expires = new Date();

                expires.setDate((new Date()).getDate() + 5);

                var token = jwt.encode({
                    email: email,
                    expires: expires
                }, jwtTokenSecret);

                tokens.push(token);
                response.send(200, { access_token: token });
            } else {
                response.send(401, { message: "User not found" });

            }
        });
});

module.exports = router;  

Thank you :-)

Answer 1

I am unsure what the "resolve" part of your title has to do with your question, but I can answer the rest of what you discuss in your question.

I have some variables in my app.js... I would like to pass them and make them usable by routing methods inside userRoutes.js file.

The usual way to share some settings with another module is to pass them to that module in a module constructor or a module method:

var userRoutes = require('./serverRoutes/userRoutes')({
    tokens: tokens, 
    jwtSecretKey: jwtSecretKey, 
    jwt: jwt, 
    User: User
});

Then, inside that userRoutes module:

var express = require('express');
var router = express.Router();
var jwtSecretKey, jwt, User, tokens;

router.post('/user/login', function (request, response) {
    var email = request.body.email;
    var password = request.body.password;

    User.findOne({ email: email, password: password },
        function (err, user) {
            if (err)
                response.send(err);

            if (user) {
                var expires = new Date();

                expires.setDate((new Date()).getDate() + 5);

                var token = jwt.encode({
                    email: email,
                    expires: expires
                }, jwtSecretKey);

                tokens.push(token);
                response.send(200, { access_token: token });
            } else {
                response.send(401, { message: "User not found" });

            }
        });
});

// define module constructor
module.exports = function(options) {
    // save data shared from parent module
    jwtSecretKey = options.jwtSecretKey;
    jwt = options.jwt;
    User = options.User;
    tokens = options.tokens;
    return router;
};  

I also have some 'helper' type methods I would like to use in different 'routing' files. I do not know how to pass them either.

The usual way to share some common help functions is to put them in their own module and then you just require() in that module in any other module that you need to use them.