Table of Contents
Cleaning
During the development of image-gallery-express, the database and images uploaded often needed to be deleted. Express.js does not have a built-in way of doing this. I decided to create a script that can be run using Node. Although this script is not a core function of a gallery, I believe this is something worthy to be mentioned.
// clean.js
const MongoClient = require('mongodb').MongoClient;
const fs = require('fs');
const path = require('path');
const directories = ['tmp', 'public/uploads'];
// Delete database
const url = "mongodb://localhost:27017/image-gallery-express";
MongoClient.connect(url, {useNewUrlParser: true, useUnifiedTopology: true}, function(err, client) {
if (err) throw err;
client.db('image-gallery-express').dropDatabase(function(err, result){
if (err) throw err;
client.close();
});
});
// Delete uploads
for (const directory of directories) {
fs.readdir(directory, (err, files) => {
if (err) throw err;
for (const file of files) {
if (file != 'readme.txt'){
fs.unlink(path.join(directory, file), err => {
if (err) throw err;
});
}
}
});
}
When Node runs this script, the database will be completely deleted, and all files (except for the readme.txt) inside the tmp and public/uploads folders will be deleted. Rather than having to manually delete all uploads from the folders and typing db.dropDatabase() in the MongoDB shell ever time I needed a full reset, running this script was all that I needed to do. This was very helpful during development.