atk4/schema

Agile Schema

2.1.0 2020-07-06 14:44 UTC

README

This extension for Agile Data implements ability to work with SQL schema, execute migrations, perform DB-tests in PHPUnit (used by other ATK frameworks) and sync up "Model" structure to the database.

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Basic Usage:

// Add the following code on your setup page / wizard:

$app->add('MigratorConsole')
    ->migrateModels([
        new Model\User($app->db), 
        new Model\Order($app->db),
        new Model\Payment($app->db)
    ]);

The user will see a console which would adjust database to contain required tables / fields for the models:

migrator-console

Of course it's also possible to perform migration without visual feedback:

$changes = \atk4\schema\Migration::of(new User($app->db))->run();

If you need a more fine-graned migration, you can define them in great detail.

// create table
$migrator = \atk4\schema\Migration::of($app->db);
$migrator->table('user')
    ->id()
    ->field('name')
    ->field('address', ['type'=>'text']);
    ->create();

// or alter
$migrator = \atk4\schema\Migration::of($app->db);
$migrator->table('user')
    ->newField('age', ['type'=>'integer'])
    ->alter();

Currently atk4/schema fully supports MySQL and SQLite databases and partly PostgreSQL and Oracle. Other SQL databases are not yet natively supported but you can register your migrator class at runtime.

// $dbDriver is the connection driver name
// MyCustomMigrator::class should be extending \atk4\schema\Migration

\atk4\schema\Migration::register($dbDriver, MyCustomMigrator::class);

Field declaration uses same types as ATK Data.

Examples

schema\Migration is a simple class for building schema-related queries using DSQL.

<?php
$migrator = \atk4\data\schema\Migration::of($connection);
$migrator->table('user')->drop();
$migrator->field('id');
$migrator->field('name', ['type'=>'string']);
$migrator->field('age', ['type'=>'integer']);
$migrator->field('bio');
$migrator->create();

schema\Snapshot (NOT IMPLEMENTED) is a simple class that can record and restore table contents:

<?php
$s = new \atk4\data\schema\Snapshot($connection);
$tables = $s->getDb($tables);

// do anything with tables

$s->setDb($tables);

Integration with PHPUnit

You can now automate your database testing by setting and checking your database contents easier. First, extend your test-script from \atk4\schema\PhpunitTestCase.

Next, you need to set your schema

$q = ['user' => [
    ['name' => 'John', 'surname' => 'Smith'],
    ['name' => 'Steve', 'surname' => 'Jobs'],
]];
$this->setDb($q);

Perform any changes, then execute:

$this->assertEquals($q, $this->getDb('user'));

To ensure that database remained the same. Of course you can compare against any other state.

  • Automatically add 'id' field by default
  • Create tables for you
  • Detect types (int, string, date, boolean etc)
  • Hides ID values if you don't pass them

Installation

Add the following inside your composer.json file:

composer require atk4/schema