relation

###Relation

This is meant to be the best ORM in node. Taking inspiration from knex and sequelize, but the end goal to to completely mimick Laravel's Eloquent package. In order to achieve the best syntax possible, we are using ES6 Proxies, which is now supported in the latest version of node. Currently, only mysql is supported, but adding a new driver is trivial.

``
npm install relation --save

//if using mysql driver
npm install mysql --save
`

###Setup

You must set the following environment variables in your app. We recommend creating a .env file and using dotenv

`
DB_DRIVER=mysql
DB_HOST=localhost
DB_USERNAME=test
DB_PASSWORD=secret
DB_NAME=blah
`

###Create a Model

chat.js

`js
import { Model } from 'relation'

export default class Chat extends Model {

/*
overwrite table name, this function is optional

static tableName() {
return 'dashboard_chats'
}
*/
}


`

###Using the Model

As long as the plural version of the model is available in the database (you can overwrite this), you can query the database.

`js
import Chat from './chat'

async function getChats {
let chats = await Chat.all()
console.log(chats)
}
`

####Supported methods

- .all() returns everything in the table
- .where({ fieldName: 'value' }) returns any matching results
- .create({ field: 'value'}) create a new row
- .select('column', 'column2') contrain rows to select
- .first() returns first results
- .limit(5) limits the query

###Query Building

`js

Chat.select('messages', 'id').where({ messages: 'blah' }).get()

Chat.where({ messages: 'blah' }).get()

Chat.select('messages').first()

Chat.where({ messages: 'blah' }).limit(2).get()


`

###Relationships

This is a huge WIP, feel free to contribute :)

Supported:
- One To One
- One To Many

Todo:
- One To Many (Inverse)
- Many To Many
- Has Many Through
- Polymorphic Relations
- Many To Many Polymorphic Relations

####One to One Example

`js
import { Model } from 'relation'


export default class User extends Model {

}

export default class Chat extends Model {
user() {
return this.hasOne(User)
}
}

let chat = await Chat.first()

//any relationship will return a promise with the result
let user = await chat.user

expect(user.name).to.be.equal('Bob')

`

####One to Many Example

`js
import { Model } from 'relation'


export default class User extends Model {
chats() {
return this.hasMany(Chat)
}
}

export default class Chat extends Model {

}

let user = await User.first()

//has many results return a query builder instance
let chats = await user.chats.first()


`

###Migrations

Will go over this soon...

###CLI

If you install relation globally (npm install relation -g) you can access the CLI methods to help create migrations, models, etc.

####Migrations

relation make:migration User -m -m will create a model as well

This will create a migration file that will allow you to build out tables.

####Models

relation make:model User

Creates a file in your current directory /models/user.js` with a default model