节点restful api，文件上传并在发布前将文件名保存在数据库中答案

【问题标题】：Node restful api, File upload and save file names in database before post节点restful api，文件上传并在发布前将文件名保存在数据库中
【发布时间】：2017-04-30 22:58:39
【问题描述】：

我已经开发了一个 node restful api。我需要上传一些图像文件并将文件名保存到数据库中。怎么做。这是我的代码

var express = require('express');
var multer  = require('multer')
var upload = multer({ dest: 'uploads/' })
var router = express.Router();
var path = require('path');

var storage =   multer.diskStorage({
  destination: function (req, file, callback) {
    callback(null, './uploads');
  },
  filename: function (req, file, callback) 
  {
    callback(null, Date.now('nano') +         path.extname(file.originalname));
  }
});
var upload = multer({ storage : storage }).array('userPhoto',2);

// Models
var Car = require('../models/car');

// Routes
Car.methods(['get','put','post','delete']);

// before file uplod part
Car.before('post',function(req,res,next)
{
    var car_photos = [];
    upload(req,res,function(err) 
    {
        if(err) 
        {
            return res.end("Error uploading file.");
        }
        else
        {
            for(var i = 0; i < req.files.length; i++) 
            {
                car_photos.push(req.files[i]['filename']);
            }
        }
    });
     req.body.car_photos = car_photos;
     next();
});
Car.register(router,'/car');
module.exports = router;

此 car_photos 数组为空。我如何将这个数组保存到我的数据库中。请帮忙。

Car.before('post',function(req,res,next)
{
    var car_photos = [];
    upload(req,res,function(err) 
    {
        if(err) 
        {
            return res.end("Error uploading file.");
        }
        else
        {
            for(var i = 0; i < req.files.length; i++) 
            {
                car_photos.push(req.files[i]['filename']);
            }
        }
    });
     req.body.car_photos = car_photos;
     next();
});

【问题讨论】：

标签： node.js rest express node-rest-client

【解决方案1】：

req.body.car_photos = car_photos; 下一个（）；

这些行应该在上传函数回调中。在 for 循环之后的 else 块中。

【讨论】：

是否可以用模型本身发布完整答案

【解决方案2】：

此示例适用于使用库 node-restful 的任何人
https://github.com/baugarten/node-restful

为模型添加一个字段：

car_photos: Array

var express = require('express');
var multer  = require('multer')
var upload = multer({ dest: 'uploads/' })
var router = express.Router();
var path = require('path');

var storage =   multer.diskStorage({
  destination: function (req, file, callback) {
    callback(null, './uploads');
  },
  filename: function (req, file, callback) 
  {
    callback(null, Date.now() + path.extname(file.originalname));
  }
});
var upload = multer({ storage : storage }).array('car_photos',2);

// Models
var Car = require('../models/car');

// Routes
Car.methods(['get','put','post','delete']);

// before file uplod part
Car.before('post',function(req,res,next)
{
    var car_photos = [];
    upload(req,res,function(err) 
    {
        if(err) 
        {
            return res.end("Error uploading file.");
        }
        else
        {
            for(var i = 0; i < req.files.length; i++) 
            {
                car_photos.push(req.files[i]['filename']);
            }
            req.body.car_photos = car_photos;
            next();
        }
    });
});
Car.register(router,'/car');
module.exports = router;

【讨论】：