Question

以下是我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);

}

如您所见，此处有server和db个变量。但是，我不确定如何将这两个变量传递给deals.findAll以及其他REST方法。

以下是deals.findAll方法的外观：

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

exports.findAll = findAll

我需要db的原因是Sequelize ORM。

Answer 1

您可以使用Function.prototype.bind()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()方法预先这些参数，因此您需要将这些函数的参数修改为：

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

nodejs：访问路由中的变量

1 个答案: