Blog: Javascript and MongoDB

Software Technologies - октомври 2016, JavaScript Blog Basic Functionality

Complete walkthrough of creating a Blog application with the Express.js Framework, from setting up the framework through authentication module, ending up with creating a CRUD around MongoDB entities using Mongoose object - document model module.

OTHER

How to create a new repository on the command line

echo "# expressjs-exam-lets-build-twitter" >> README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin https://github.com/plamen911/expressjs-exam-lets-build-twitter.git
git push -u origin master

How to push an existing repository from the command line

git remote add origin https://github.com/plamen911/expressjs-exam-lets-build-twitter.git
git push -u origin master

Migrations

Run an update query on the not-updated entities after every change that we made to the schema

• db.getCollection('users').update({articles: {$exists: false}}, { $set: {articles: []}}, {multi: true}) - mass update query
• db.getCollection('users').update({roles: {$exists: false}}, { $set: {roles: [ObjectId('582b0856165b9a22f4213d90')]}}, {multi: true}) - set default role 'User'
• db.getCollection('articles').update({category: {$exists: false}}, { $set: {category: ObjectId('58315fff6247e3c064eeaf27')}}, {multi: true})