1
鑑於yon架構,如何將userId
保存到createdBy
和updatedBy
?如何保存userId貓鼬鉤?
這看起來應該是一個簡單的用例。我該怎麼做?
我不確定如何在寫入之前將userId
從req.user.id
轉換爲模型。
// graph.model.js
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var schema = new Schema({
title: String,
createdAt: Date,
createdBy: String,
updatedAt: Date,
updatedBy: String,
});
// This could be anything
schema.pre('save', function (next) {
- if (!this.createdAt) {
this.createdAt = this.updatedAt = new Date;
this.createdBy = this.updatedBy = userId;
} else if (this.isModified()) {
this.updatedAt = new Date;
this.updatedBy = userId;
}
next();
});
這裏的控制器代碼,如果你有興趣:
var Graph = require('./graph.model');
// Creates a new Graph in the DB.
exports.create = function(req, res) {
Graph.create(req.body, function(err, thing) {
if(err) { return handleError(res, err); }
return res.status(201).json(thing);
});
};
// Updates an existing thing in the DB.
exports.update = function(req, res) {
if(req.body._id) { delete req.body._id; }
Graph.findById(req.params.id, function (err, thing) {
if (err) { return handleError(res, err); }
if(!thing) { return res.send(404); }
var updated = _.merge(thing, req.body);
updated.save(function (err) {
if (err) { return handleError(res, err); }
return res.json(thing);
});
});
};