My Blog Backend

Create project

    npm init -y
    npm install --save express

Babel support

To make Node support ES6 for us:

    npm install --save @babel/core @babel/node @babel/preset-env

To tell babel how to transpile our ES6 code into common js code that Node JS can execute. (.babelrc)

{
    "presets": ["@babel/preset-env"]
}

To start our server

    npx babel-node src/server.js

Body parser

To parse body of a POST request.

    npm install --save body-parser

Server watcher

Whenever your files change, your page will be automatically refreshed.

First install nodemon package:

    npm install nodemon --save-dev

Second, run your server using this command:

    npx nodemon --exec npx babel-node src/server.js

Mongo DB

Install Mongo Db on your machine either by running its installation command or downloading from Mongo website.
```
    choco install mongodb
```
Run Mongo shell from "C:\Program Files\MongoDB\Server\4.2\bin\mongo.exe"

Some useful commands

To create a database
```
    use my-blog
```

In MongoDb each database is composed of a few or many Collections. These collections can contain any number of JSON objects (a.k.a documents).

Collection name: articles
documents (array of objects): each JSON object is a document

Our javascript object:

    const articlesInfo = {
        'learn-react': {
            upvotes: 0,
            comments: [],
        },
        'learn-node': {
            upvotes: 0,
            comments: [],
        },
        'my-thoughts-on-resumes': {
            upvotes: 0,
            comments: [],
        },
    };

Insert into our MongoDb collection:

    > db.articles.insert([{
        name: 'learn-react',
        upvotes: 0,
        comments: [],
    }, {
        name: 'learn-node',
        upvotes: 0,
        comments: [],
    }, {
        name: 'my-thoughts-on-resumes',
        upvotes: 0,
        comments: [],
    }])

Query data

To see all documents

    > db.articles.find({})

Or to see it in a readable format use .pretty()

    > db.articles.find({}).pretty()

To query one document

    > db.articles.find({ name: 'learn-react' }).pretty()

Or use .findOne() without .pretty()

    > db.articles.findOne({ name: 'learn-react' })

To add MongoDB to express server

Add mongodb library to the project, it allows us to connect and modify our database:

    npm install mongodb --save

nkhalili/my-blog-backend