Upload photo into a folder in nodejs - node.js

Question

I want to upload an image in a folder using nodejs but i don't know how to do it
Here is my insert in my ImageDao
exports.insert = function(data, callback){
console.log("in imagesDao insert");
var query = " insert into " + tableName + " (url,ajoute_par)";
query = query + " values(?,?);";
var values = [data.url , data.ajoute_par];
// var values = [encodeURIComponent(data.url) , data.ajoute_par];
database.execute(query, values, function(){
callback();
});
}
And here is my image controller
// insert
exports.write = function(request, response){
console.log("in images write");
// Get the data.
var postData = "";
request.on('data', function(data){ // request.on is a listener. Call when data can be read
postData = postData + data;
});
request.on('end', function(){ // Called when data has been read
var dataObj = JSON.parse(postData);
dao.insert(dataObj, function(){
send(response, '{"write result" : "Inserted successfuly"}');
});
});
}

Answer 1

To upload files you can use multer module of nodejs. https://github.com/expressjs/multer
images_storage: function () {
return multer.diskStorage({
destination: function (req, file, cb) {
mkdirp(Config.upload_images_path, function (err) {
});
cb(null, Config.upload_images_path)
}
,
filename: function (req, file, cb) {
var getFileExt = function (fileName) {
var fileExt = fileName.split(".");
if (fileExt.length === 1 || (fileExt[0] === "" && fileExt.length === 2)) {
return "";
}
return fileExt.pop();
}
cb(null, Date.now() + '.' + getFileExt(file.originalname))
}
});
},
// Image uploading
const fs = require('fs');
const multer = require('multer');
const Uploads = multer({
storage: utility.images_storage(),
fileFilter: function (req, file, cb) {
if (Config.image_format_arr.indexOf(file.mimetype))
cb(null, true);
else
cb(null, false);
}
});
//And in your route you can use the upload function
router.post('/upload-logo', Uploads.single('school_logo'), function (req, res, next) {
var school_id = req.body.school_id;
var result = {flag: false, message: "Error Occurred! in saving school logo."};
console.log("REQUEST FILES " + req.file);
// Save School Logo
if (typeof req.file != 'undefined' && req.file.size > 0) {
School.findByIdAndUpdate(school_id, {
$set: {
school_logo: req.file.filename
}
}, {'new': true}, function (err, school_details) {
console.log("school_details " + school_details);
if (!err && school_details) {
result.flag = true;
result.message = "School logo has been successfully updated";
result.path = '/uploads/images/' + school_details.school_logo;
//req.session.school_details = school_details;
utility.upgradeSchoolLogoSessionValue(school_details, false, function (updated_school_details) {
console.log("BEFOR SESSION IS UPDATED" + JSON.stringify(req.session.school_details));
req.session.school_details = updated_school_details;
console.log("SESSION IS UPDATED" + JSON.stringify(req.session.school_details));
});
console.log("FILE NAME IS THIS " + req.file.filename);
}
res.json(JSON.stringify(result));
});
}
else {
res.json(JSON.stringify(result));
}
});