@harnessflex/schema-builder NPM

Schema Builder

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

npm GitHub

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.

harness harness flex db-migrate sql migration migration-builder schema-builder eloquent

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