I have an application to sell cars, I want to upload each car images to a separate folder inside this path country/city.
For example:
Let's say there is a car in Berlin, Germany. When adding this car I am saving the images to this folder Germany/Berlin.
Now I don't want to put all the images of the cars in Berlin, Germany inside the same folder, I want to make a separate folder for each car in Berlin, Germany.
My first approach was to count the number of folders inside the base path and then make a new one by adding one to the number.
For example:
Let's say there are 5 folders inside Germany/Berlin which is the base path for our example
The path would now be like this "Germany/Berlin/6". The problem is that it's making a different folder for each image.
For example:
Let's say there are 5 folders inside Germany/Berlin and there are 4 images for the car that is being uploaded.
The first image goes inside Germany/Berlin/6.
The second image goes inside Germany/Berlin/7.
The third image goes inside Germany/Berlin/8.
The fourth image goes inside Germany/Berlin/9.
I think the problem is that the destination function is being executed for each one of the images.
How can I solve this?
Here's My Code:
const multer = require("multer"); const path = require("path"); const fs = require("fs"); const { onlyImagesAreAllowed } = require("./error_codes"); function uploadFiles(filePath) { const storage = multer.diskStorage({ destination: (req, _file, cb) => { const data = req.body; let dirsCount = 1; let dirPath = `images/${filePath}/${data.country}/${data.city}`; const exists = fs.existsSync(dirPath); if (!exists) { fs.mkdirSync(dirPath, { recursive: true }); } if (exists) { dirsCount = fs .readdirSync(dirPath, { withFileTypes: true }) .filter((dirent) => dirent.isDirectory()) .map((dirent) => dirent.name).length + 1; } dirPath += `${dirsCount}`; fs.mkdirSync(dirPath, { recursive: true }); cb(null, dirPath); }, filename: (_req, file, cb) => { const uniqueSuffix = Date.now() + "-" + Math.round(Math.random() * 1e9); cb(null, file.fieldname + "-" + uniqueSuffix); }, }); const fileFilter = (req, file, callback) => { const acceptedTypes = file.mimetype.split("/"); if (acceptedTypes[0] === "image") { callback(null, true); } else { callback(null, false); callback(new Error(onlyImagesAreAllowed)); } }; const limits = { fileSize: 20 * 1024 * 1024, }; return multer({ storage: storage, fileFilter: fileFilter, limits: limits, }); } module.exports = { uploadFiles, }; And the usage is like this:
const express = require("express"); const carsController = require("./cars.controller"); const { uploadFiles } = require("../../utils/upload_files"); const router = express.Router(); router.post( "/addCar", uploadFiles("cars").array("carGallery", 12), carController.addCar ); module.exports = router; 