Node与Express开发（第2版）

持久化

｜

139

</div>

</form>

</div>

接下来，创建路由处理函数：

exports.notifyWhenInSeasonForm = (req, res) =>

res.render('notify-me-when-in-season', { sku: req.query.sku })

exports.notifyWhenInSeasonProcess = (req, res) => {

const { email, sku } = req.body

await db.addVacationInSeasonListener(email, sku)

return res.redirect(303, '/vacations')

}

最后，在

db.js

里加上实际的实现：

const VacationInSeasonListener = require('./models/vacationInSeasonListener')

module.exports = {

getVacations: async (options = {}) => Vacation.find(options),

addVacationInSeasonListener: async (email, sku) => {

await VacationInSeasonListener.updateOne(

{ email },

{ $push: { skus: sku } }, ...