Schema Builder

A Laravel inspired schema builder for Harness Flex and DB Migrate.

Project is no longer maintained. Please use Formidablejs' Schema Builder instead.

Install

This package is automatically installed with the Harness Flex Framework.

npm i @harnessflex/schema-builder

Basic Usage

Schema Builder works on both JavaScript based projects and imba based projects.

JavaScript

const { columns, id, foreign, string, longText, timestamps, softDeletes, timestamp } = require('@harnessflex/schema-builder')

exports.up = function (db) {
    return db.createTable('posts', columns([
        id(),
        foreign('user_id').references('id').on('users').onDelete('cascade'),
        string('title'),
        longText('body'),
        string('slug').unique(),
        timestamp('published_at').nullable(),
        softDeletes(),
        timestamps(),
    ])
}

Imba

const { columns, id, foreign, string, longText, timestamps, softDeletes, timestamp } = require '@harnessflex/schema-builder'

exports.up = do(db)
    db.createTable 'posts', columns [
        id!
        foreign('user_id').references('id').on('users').onDelete 'cascade'
        string 'title'
        longText 'body'
        string('slug').unique!
        timestamp('published_at').nullable!
        softDeletes!
        timestamps!
    ]

Modifying Tables

To add a new column to an existing table, use the add helper method:

const { string, add } = require('@harnessflex/schema-builder')

...

exports.up = function (db) {
    return add( string('api_key').nullable().after('password') )
        .whereTable('users')
        .using(db)
};

And to change a column in an existing table, use the change helper method:

const { change, longText } = require('@harnessflex/schema-builder')

...

exports.up = function (db) {
    return change( longText('api_key').nullable() )
        .whereTable('users')
        .using(db)
};

Both, the add and change methods, return a ChangeColumn instance.

Columns

Column	Params	Type	Unique Constraint Support
bigIncrements	name: string	Column	☑
bigInteger	name: string	Column	☑
binary	name: string	Column	☑
blob	name: string	Column	☐
boolean	name: string	Column	☑
char	name: string	Column	☑
date	name: string	Column	☑
dateTime	name: string	Column	☑
decimal	name: string	Column	☑
foreign	name: string	ForeignColumn	☐
id		Column	☑
integer	name: string	Column	☑
longText	name: string	Column	☐
real	name: string	Column	☑
smallInteger	name: string	Column	☑
softDeletes		Column	☑
string	name: string	Column	☑
text	name: string	Column	☐
time	name: string	Column	☑
timestamp	name: string	Column	☑
timestamps	currentTimeStamp: boolean	object	☑

Other

Method	Params	Description
add	column: Column or ForeignColumn	Add a new column to an existing table.
change	column: Column or ForeignColumn	Change a column in an existing table.
columns	columns: array	A collection of columns.
schema	columns: array	A collection of columns.

API

ForeignColumn

Method	Params	Description
references	column: string	Reference column of another table.
on	table: string	Reference table.
onDelete	rule: string	Add onDelete rule.
onUpdate	rule: string	Add onUpdate rule.

JavaScript and Imba

foreign('user_id').references('id').on('users').onDelete('cascade')

Column

Method	Params	Description
after	column: string	Add column after another column.
length	length: integer	Set column length.
primary	primary: boolean	Set column as primary key.
autoIncrement	increment: boolean	Add auto increment attribute.
nullable	nullable: boolean	Mark column nullable.
unique	isUnique: boolean	Mark column unique.
unsigned	isUnsigned: boolean	Mark column unsigned.
default	value: mixed	Set column default value.

JavaScript

return db.createTable('users', columns([
	id(),
	string('name'),
	string('email').unique(),
	string('password'),
	timestamp('email_verified_at').nullable(),
	timetamps(),
]))

Imba

db.createTable 'users', columns [
	id!
	string 'name'
	string('email').unique!
	string 'password'
	timestamp('email_verified_at').nullable!
	timetamps!
]

ChangeColumn

Method	Params	Description
where	table: string	Set table name.
whereTable	table: string	Set table name.
using	db: object	Add/change column and return db-migrate db instance.

JavaScript

return change( longText('api_key').nullable() )
    .whereTable('users')
    .using(db)

Imba

change( longText('api_key').nullable! )
    .whereTable('users')
    .using db

Example (JavaScript)

Before running the example project, edit the database.json config file located under the example folder.

When done, run the following command:

db-migrate up -m=example/migrations

This command will create 2 new tables named users and posts in your database.

Note: db-migrate and db-migrate-mysql must be installed globally.

Security

If you discover any security related issues, please email donaldpakkies@gmail.com instead of using the issue tracker.

License

The MIT License (MIT). Please see License File for more information.