I am using multer for uploading my images and documents but this time I want to restrict uploading if the size of the image is >2mb. How can I find the size of the file of the document? So far I tried as below but not working.
var storage = multer.diskStorage({
destination: function (req, file, callback) {
callback(null, common.upload.student);
},
filename: function (req, file, callback) {
console.log(file.size+'!!!!!!!!!!!!!!')======>'Undefined'
var ext = '';
var name = '';
if (file.originalname) {
var p = file.originalname.lastIndexOf('.');
ext = file.originalname.substring(p + 1);
var firstName = file.originalname.substring(0, p + 1);
name = Date.now() + '_' + firstName;
name += ext;
}
var filename = file.originalname;
uploadImage.push({ 'name': name });
callback(null, name);
}
});
Can anyone please help me?
To get a file's size in megabytes:
var fs = require("fs"); // Load the filesystem module
var stats = fs.statSync("myfile.txt")
var fileSizeInBytes = stats.size;
// Convert the file size to megabytes (optional)
var fileSizeInMegabytes = fileSizeInBytes / (1024*1024);
or in bytes:
function getFilesizeInBytes(filename) {
var stats = fs.statSync(filename);
var fileSizeInBytes = stats.size;
return fileSizeInBytes;
}
If you use ES6 and deconstructing, finding the size of a file in bytes only takes 2 lines (one if the fs module is already declared!):
const fs = require('fs');
const {size} = fs.statSync('path/to/file');
Note that this will fail if the size variable was already declared. This can be avoided by renaming the variable while deconstructing using a colon:
const fs = require('fs');
const {size: file1Size} = fs.statSync('path/to/file1');
const {size: file2Size} = fs.statSync('path/to/file2');
In addition, you can use the NPM filesize package: https://www.npmjs.com/package/filesize
This package makes things a little more configurable.
var fs = require("fs"); //Load the filesystem module
var filesize = require("filesize");
var stats = fs.statSync("myfile.txt")
var fileSizeInMb = filesize(stats.size, {round: 0});
For more examples:
https://www.npmjs.com/package/filesize#examples