nodejs：访问路由中的变量

Question

这是我的 routes.js 的样子：

module.exports = function (server, db) {

    // Deals
    const deals = require('./controllers/deals');
    server.get('/deals', deals.findAll);
    server.get('/deals/:id', deals.findById);
    server.post('/deals', deals.add);
    server.put('/deals/:id', deals.update);
    server.del('/deals/:id', deals.delete);

}

如你所见，这里有server和db两个变量。但是，我不确定如何将这两个变量传递给 deals.findAll 和其他 REST 方法。

下面是 deals.findAll 方法的样子：

const findAll = (req, res, next) => {
   // I need to access db here, so I can use Sequelize.
}

exports.findAll = findAll

我需要数据库的原因是 Sequelize ORM。

Answer 1

您可以使用 Function.prototype.bind() 来执行此操作：

module.exports = function (server, db) {

    // Deals
    const deals = require('./controllers/deals');
    server.get('/deals', deals.findAll.bind(null, server, db));
    server.get('/deals/:id', deals.findById.bind(null, server, db));
    server.post('/deals', deals.add.bind(null, server, db));
    server.put('/deals/:id', deals.update.bind(null, server, db));
    server.del('/deals/:id', deals.delete.bind(null, server, db));
}

Function.prototype.bind()方法prepends那些参数，所以你需要修改那些函数的参数为：

const findAll = (server, db, req, res, next) => {
   // server & db is set here
}

nodejs：访问路由中的变量

nodejs: Access variables in routes

node.js

express

sequelize.js

restify