ZfSimpleMigrations

Simple Migrations for Zend Framework 2. Project originally based on ZendDbMigrations but module author did not response for issues and pull-requests so fork became independent project.

Supported Drivers

The following DB adapter drivers are supported by this module.

• Pdo_Sqlite
• Pdo_Mysql
• Pdo_Pgsql
• Mysqli only if you configure the driver options with 'buffer_results' => true

Installation

Using composer

php composer.phar require vgarvardt/zf-simple-migrations:dev-master
php composer.phar update

add ZfSimpleMigrations to the modules array in application.config.php

Usage

Available commands

• migration version [<name>] - show last applied migration (name specifies a configured migration)
• migration list [<name>] [--all] - list available migrations (all includes applied migrations)
• migration apply [<name>] [<version>] [--force] [--down] [--fake] - apply or rollback migration
• migration generate [<name>] - generate migration skeleton class

Migration classes are stored in /path/to/project/migrations/ dir by default.

Generic migration class has name Version<YmdHis> and implement ZfSimpleMigrations\Library\MigrationInterface.

Migration class example

<?php

namespace ZfSimpleMigrations\Migrations;

use ZfSimpleMigrations\Library\AbstractMigration;
use Zend\Db\Metadata\MetadataInterface;

class Version20130403165433 extends AbstractMigration
{
    public static $description = "Migration description";

    public function up(MetadataInterface $schema)
    {
        //$this->addSql(/*Sql instruction*/);
    }

    public function down(MetadataInterface $schema)
    {
        //$this->addSql(/*Sql instruction*/);
    }
}

Multi-statement sql

While this module supports execution of multiple SQL statements it does not have way to detect if any other statement than the first contained an error. It is highly recommended you only provide single SQL statements to addSql at a time. I.e instead of

$this->addSql('SELECT NOW(); SELECT NOW(); SELECT NOW();');

You should use

$this->addSql('SELECT NOW();');
$this->addSql('SELECT NOW();');
$this->addSql('SELECT NOW();');

Accessing ServiceLocator In Migration Class

By implementing the Zend\ServiceManager\ServiceLocatorAwareInterface in your migration class you get access to the ServiceLocator used in the application.

<?php

namespace ZfSimpleMigrations\Migrations;

use ZfSimpleMigrations\Library\AbstractMigration;
use Zend\Db\Metadata\MetadataInterface;
use Zend\ServiceManager\ServiceLocatorAwareInterface;
use Zend\ServiceManager\ServiceLocatorAwareTrait;

class Version20130403165433 extends AbstractMigration
                            implements ServiceLocatorAwareInterface
{
    use ServiceLocatorAwareTrait;

    public static $description = "Migration description";

    public function up(MetadataInterface $schema)
    {
         //$this->getServiceLocator()->get(/*Get service by alias*/);
         //$this->addSql(/*Sql instruction*/);

    }

    public function down(MetadataInterface $schema)
    {
        //$this->getServiceLocator()->get(/*Get service by alias*/);
        //$this->addSql(/*Sql instruction*/);
    }
}

Accessing Zend Db Adapter In Migration Class

By implementing the Zend\Db\Adapter\AdapterAwareInterface in your migration class you get access to the Db Adapter configured for the migration.

<?php

namespace ZfSimpleMigrations\Migrations;

use Zend\Db\Adapter\AdapterAwareInterface;
use Zend\Db\Adapter\AdapterAwareTrait;
use Zend\Db\Sql\Ddl\Column\Integer;
use Zend\Db\Sql\Ddl\Column\Varchar;
use Zend\Db\Sql\Ddl\Constraint\PrimaryKey;
use Zend\Db\Sql\Ddl\CreateTable;
use Zend\Db\Sql\Ddl\DropTable;
use ZfSimpleMigrations\Library\AbstractMigration;
use Zend\Db\Metadata\MetadataInterface;

class Version20150524162247 extends AbstractMigration implements AdapterAwareInterface
{
    use AdapterAwareTrait;

    public static $description = "Migration description";

    public function up(MetadataInterface $schema)
    {
        $table = new CreateTable('my_table');
        $table->addColumn(new Integer('id', false));
        $table->addConstraint(new PrimaryKey('id'));
        $table->addColumn(new Varchar('my_column', 64));
        $this->addSql($table->getSqlString($this->adapter->getPlatform()));
    }

    public function down(MetadataInterface $schema)
    {
        $drop = new DropTable('my_table');
        $this->addSql($drop->getSqlString($this->adapter->getPlatform()));
    }
}

Configuration

User Configuration

The top-level key used to configure this module is migrations.

Migration Configurations: Migrations Name

Each key under migrations is a migrations configuration, and the value is an array with one or more of the following keys.

Sub-key: dir

The path to the directory where migration files are stored. Defaults to ./migrations in the project root dir.

Sub-key: namespace

The class namespace that migration classes will be generated with. Defaults to ZfSimpleMigrations\Migrations.

Sub-key: show_log (optional)

Flag to log output of the migration. Defaults to true.

Sub-key: adapter (optional)

The service alias that will be used to fetch a Zend\Db\Adapter\Adapter from the service manager.

User configuration example

'migrations' => array(
    'default' => array(
            'dir' => dirname(__FILE__) . '/../../../../migrations-app',
            'namespace' => 'App\Migrations',    
    ),
    'albums' => array(
            'dir' => dirname(__FILE__) . '/../../../../migrations-albums',
            'namespace' => 'Albums\Migrations',
            'adapter' => 'AlbumDb'    
    ),
),