├── Knp
    ├── Command
    │   └── MigrationCommand.php
    ├── Migration
    │   ├── AbstractMigration.php
    │   └── Manager.php
    ├── Provider
    │   └── MigrationServiceProvider.php
    └── Resources
    │   └── bin
    │       └── console
├── README.md
└── composer.json


/Knp/Command/MigrationCommand.php:
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 1 | <?php
 2 | 
 3 | namespace Knp\Command;
 4 | 
 5 | use Knp\Command\Command;
 6 | 
 7 | use Symfony\Component\Console\Input\InputDefinition;
 8 | use Symfony\Component\Console\Input\InputArgument;
 9 | use Symfony\Component\Console\Input\InputInterface;
10 | use Symfony\Component\Console\Output\OutputInterface;
11 | 
12 | class MigrationCommand extends Command
13 | {
14 |     public function configure()
15 |     {
16 |         $this->setName('knp:migration:migrate');
17 |     }
18 | 
19 |     public function execute(InputInterface $input, OutputInterface $output)
20 |     {
21 |         $app        = $this->getSilexApplication();
22 |         $manager    = $app['migration'];
23 | 
24 |         if (!$manager->hasVersionInfo()) {
25 |             $manager->createVersionInfo();
26 |         }
27 | 
28 |         $res = $manager->migrate();
29 | 
30 |         switch($res) {
31 |             case true:
32 |                 $output->writeln(sprintf('Succesfully executed <info>%d</info> migration(s)!', $manager->getMigrationExecuted()));
33 |                 foreach ($manager->getMigrationInfos() as $info) {
34 |                     $output->writeln(sprintf(' - <info>%s</info>', $info));
35 |                 }
36 |                 break;
37 |             case null:
38 |                 $output->writeln('No migrations to execute, you are up to date!');
39 |                 break;
40 |         }
41 |     }
42 | }


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/Knp/Migration/AbstractMigration.php:
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 1 | <?php
 2 | 
 3 | namespace Knp\Migration;
 4 | 
 5 | use Doctrine\DBAL\Schema\Schema;
 6 | use Silex\Application;
 7 | 
 8 | abstract class AbstractMigration
 9 | {
10 |     public function getVersion()
11 |     {
12 |         $rc = new \ReflectionClass($this);
13 | 
14 |         if (preg_match('/^(\d+)/', basename($rc->getFileName()), $matches)) {
15 |             return (int) ltrim($matches[1], 0);
16 |         }
17 | 
18 |         throw new RuntimeError(sprintf('Could not get version from "%"', basename($rc->getFileName())));
19 |     }
20 | 
21 |     public function getMigrationInfo()
22 |     {
23 |         return null;
24 |     }
25 | 
26 |     public function schemaUp(Schema $schema) {}
27 | 
28 |     public function schemaDown(Schema $schema) {}
29 | 
30 |     public function appUp(Application $app) {}
31 | 
32 |     public function appDown(Application $app) {}
33 | }


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/Knp/Migration/Manager.php:
--------------------------------------------------------------------------------
  1 | <?php
  2 | 
  3 | namespace Knp\Migration;
  4 | 
  5 | use Silex\Application;
  6 | use Doctrine\DBAL\Schema\Schema;
  7 | use Doctrine\DBAL\Connection;
  8 | use Symfony\Component\Finder\Finder;
  9 | 
 10 | class Manager
 11 | {
 12 |     private $application;
 13 | 
 14 |     private $schema;
 15 | 
 16 |     private $connection;
 17 | 
 18 |     private $currentVersion = null;
 19 | 
 20 |     private $migrationInfos = array();
 21 | 
 22 |     private $migrationExecuted = 0;
 23 | 
 24 |     private $migrationsTableName = 'schema_version';
 25 | 
 26 |     public function __construct(Connection $connection, Application $application, Finder $finder)
 27 |     {
 28 |         $this->schema      = $connection->getSchemaManager()->createSchema();
 29 |         $this->toSchema    = clone($this->schema);
 30 |         $this->connection  = $connection;
 31 |         $this->finder      = $finder;
 32 |         $this->application = $application;
 33 | 
 34 |         if(isset($application['migration.migrations_table_name'])) {
 35 |             $this->migrationsTableName = $application['migration.migrations_table_name'];
 36 |         }
 37 |     }
 38 | 
 39 |     private function buildSchema(Schema $schema)
 40 |     {
 41 |         $queries = $this->schema->getMigrateToSql($schema, $this->connection->getDatabasePlatform());
 42 | 
 43 |         foreach ($queries as $query) {
 44 |             $this->connection->exec($query);
 45 |         }
 46 |     }
 47 | 
 48 |     private function findMigrations($from)
 49 |     {
 50 |         $finder     = clone($this->finder);
 51 |         $migrations = array();
 52 | 
 53 |         $finder
 54 |             ->files()
 55 |             ->name('*Migration.php')
 56 |             ->sortByName()
 57 |         ;
 58 | 
 59 |         foreach ($finder as $migration) {
 60 |             if (preg_match('/^(\d+)_(.*Migration).php$/', basename($migration), $matches)) {
 61 | 
 62 |                 list(, $version, $class) = $matches;
 63 | 
 64 |                 if ((int) ltrim($version, 0) > $from) {
 65 |                     require_once $migration;
 66 | 
 67 |                     $fqcn = '\\Migration\\'.$class;
 68 | 
 69 |                     if (!class_exists($fqcn)) {
 70 |                         throw new \RuntimeException(sprintf('Could not find class "%s" in "%s"', $fqcn, $migration));
 71 |                     }
 72 | 
 73 |                     $migrations[] = new $fqcn();
 74 |                 }
 75 |             }
 76 |         }
 77 | 
 78 |         return $migrations;
 79 |     }
 80 | 
 81 |     public function getMigrationInfos()
 82 |     {
 83 |         return $this->migrationInfos;
 84 |     }
 85 | 
 86 |     public function getMigrationExecuted()
 87 |     {
 88 |         return $this->migrationExecuted;
 89 |     }
 90 | 
 91 |     public function getCurrentVersion()
 92 |     {
 93 |         if (is_null($this->currentVersion)) {
 94 |             $this->currentVersion = $this->conn->fetchColumn('SELECT ' . $this->migrationsTableName . ' FROM schema_version');
 95 |         }
 96 | 
 97 |         return $this->currentVersion;
 98 |     }
 99 | 
100 |     public function setCurrentVersion($version)
101 |     {
102 |         $this->currentVersion = $version;
103 |         $this->connection->executeUpdate('UPDATE ' . $this->migrationsTableName . ' SET schema_version = ?', array($version));
104 |     }
105 | 
106 |     public function hasVersionInfo()
107 |     {
108 |         return $this->schema->hasTable($this->migrationsTableName);
109 |     }
110 | 
111 |     public function createVersionInfo()
112 |     {
113 |         $schema = clone($this->schema);
114 | 
115 |         $schemaVersion = $schema->createTable($this->migrationsTableName);
116 |         $schemaVersion->addColumn($this->migrationsTableName, 'integer', array('unsigned' => true, 'default' => 0));
117 | 
118 |         $this->buildSchema($schema);
119 | 
120 |         $this->connection->insert($this->migrationsTableName, array('schema_version' => 0));
121 |     }
122 | 
123 |     public function migrate()
124 |     {
125 |         $from    = $this->connection->fetchColumn('SELECT ' . $this->migrationsTableName . ' FROM schema_version');
126 |         $queries = array();
127 | 
128 |         $migrations = $this->findMigrations($from);
129 | 
130 |         if (count($migrations) == 0) {
131 |             return null;
132 |         }
133 | 
134 |         foreach ($migrations as $migration) {
135 |             $migration->schemaUp($this->toSchema);
136 |         }
137 | 
138 |         $this->buildSchema($this->toSchema);
139 | 
140 |         foreach ($migrations as $migration) {
141 |             $migration->appUp($this->application);
142 |         }
143 | 
144 |         $migrationInfos = array();
145 | 
146 |         foreach ($migrations as $migration) {
147 |             if (null !== $migration->getMigrationInfo()) {
148 |                 $migrationInfos[$migration->getVersion()] = $migration->getMigrationInfo();
149 |             }
150 | 
151 |             $this->migrationExecuted++;
152 |         }
153 | 
154 |         $this->migrationInfos = $migrationInfos;
155 | 
156 |         $this->setCurrentVersion($migration->getVersion());
157 | 
158 |         return true;
159 |     }
160 | }
161 | 


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/Knp/Provider/MigrationServiceProvider.php:
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 1 | <?php
 2 | 
 3 | namespace Knp\Provider;
 4 | 
 5 | use Silex\ServiceProviderInterface;
 6 | use Silex\Application;
 7 | 
 8 | use Knp\Migration\Manager as MigrationManager;
 9 | 
10 | use Symfony\Component\Finder\Finder;
11 | 
12 | use Knp\Console\ConsoleEvents;
13 | use Knp\Console\ConsoleEvent;
14 | 
15 | use Knp\Command\MigrationCommand;
16 | 
17 | class MigrationServiceProvider implements ServiceProviderInterface
18 | {
19 |     public function register(Application $app)
20 |     {
21 |         $app['migration'] = $app->share(function() use ($app) {
22 |             return new MigrationManager($app['db'], $app, Finder::create()->in($app['migration.path']));
23 |         });
24 | 
25 |         $app['dispatcher']->addListener(ConsoleEvents::INIT, function(ConsoleEvent $event) {
26 |             $application = $event->getApplication();
27 |             $application->add(new MigrationCommand());
28 |         });
29 | 
30 |         if (isset($app['migration.register_before_handler']) && $app['migration.register_before_handler']) {
31 |             $this->registerBeforeHandler($app);
32 |         }
33 |     }
34 | 
35 |     private function registerBeforeHandler($app)
36 |     {
37 |         $app->before(function() use ($app) {
38 |             $manager = $app['migration'];
39 | 
40 |             if (!$manager->hasVersionInfo()) {
41 |                 $manager->createVersionInfo();
42 |             }
43 | 
44 |             if (true === $manager->migrate() && isset($app['twig'])) {
45 |                 $app['twig']->addGlobal('migration_infos', $manager->getMigrationInfos());
46 |             }
47 |         });
48 |     }
49 | 
50 |     public function boot(Application $app)
51 |     {        
52 |     }
53 | }
54 | 


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/Knp/Resources/bin/console:
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1 | #!/usr/bin/env php
2 | <?php
3 | 
4 | set_time_limit(0);
5 | 
6 | $app = require_once __DIR__.'/bootstrap.php';
7 | $app['console']->run();


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/README.md:
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 1 | # DEPRECATED
 2 | Unfortunately we decided to not maintain this project anymore ([see why](https://knplabs.com/en/blog/news-for-our-foss-projects-maintenance)).
 3 | If you want to mark another package as a replacement for this one please send an email to [hello@knplabs.com](mailto:hello@knplabs.com).
 4 | 
 5 | # Migrations
 6 | 
 7 | This is a simple homebrew schema migration system for silex and doctrine.
 8 | 
 9 | ## Install
10 | 
11 | As usual, just include `knplabs/migration-service-provider` in your `composer.json` (don't tell me you don't have one, it's 2012 already), and register the service. You will have to pass the `migration.path` option, which should contain the path to your migrations files:
12 | 
13 | ```php
14 | $app->register(new \Knp\Provider\MigrationServiceProvider(), array(
15 |     'migration.path' => __DIR__.'/../src/Resources/migration'
16 | ));
17 | ```
18 | 
19 | ## Enough small talk, I want to write migrations!
20 | 
21 | And I am too lazy to write a comprehensive documentation right now, so you will have to rely on two external resources:
22 | 
23 | 1. [The marketplace's migrations](https://github.com/KnpLabs/marketplace/tree/master/src/Resources/migrations)
24 | 2. [The official documentation for Doctrine's DBAL Schema Manager](http://readthedocs.org/docs/doctrine-dbal/en/latest/reference/schema-manager.html)
25 | 
26 | ## Running migrations
27 | 
28 | There are two ways of running migrations
29 | 
30 | ### Using the `before` handler
31 | 
32 | If you pass a `migration.register_before_handler` (set to `true`) when registering the service, then a `before` handler will be registered for migration to be run. It means that the migration manager will be run for each hit to your application.
33 | 
34 | You might want to enable this behavior for development mode, but please don't do that in production!
35 | 
36 | ### Using the `knp:migration:migrate` command
37 | 
38 | If you installed the console service provider right, you can use the `knp:migration:migrate` command.
39 | 
40 | ## Writing migrations
41 | 
42 | A migration consist of a single file, holding a migration class. By design, the migration file must be named something like `<version>_<migration_name>Migration.php` and located in `src/Resources/migrations`, and the class `<migration_name>Migration`. For example, if your migration adds a `bar` field to the `foo` table, and is the 5th migration of your schema, you should name your file `05_FooBarMigration.php`, and the class would be named `FooBarMigration`.
43 | 
44 | In addition to these naming conventions, your migration class must extends `Knp\Migration\AbstractMigration`, which provides a few helping method such as `getVersion` and default implementations for migration methods.
45 | 
46 | The migration methods consist of 4 methods:
47 | 
48 | * `schemaUp`
49 | * `schemaDown`
50 | * `appUp`
51 | * `appDown`
52 | 
53 | The names are pretty self-explanatory. Each `schema*` method is fed a `Doctrine\DBAL\Schema\Schema` instance of which you're expected to work to add, remove or modify fields and/or tables. The `app*` method are given a `Silex\Application` instance, actually your very application. You can see an example of useful `appUp` migration in the marketplace's [CommentMarkdownCacheMigration](https://github.com/knplabs/marketplace/blob/master/src/Resources/migrations/04_CommentMarkdownCacheMigration.php).
54 | 
55 | ## Migration infos
56 | 
57 | There's one last method you should know about: `getMigrationInfo`. This method should return a self-explanatory description of the migration (it is optional though, and you can skip its implementation). When a migration implementing the `getMigrationInfo` method is run, and if you use twig, a global variable is set in your twig environment containing an array of all run migration informations.
58 | 
59 | You can then use it with something like that:
60 | 
61 | ```html
62 |       {% if migration_infos is defined %}
63 |         <div class="alert alert-success">
64 |           <p>Some migrations have been run:</p>
65 |           <ul>
66 |           {% for info in migration_infos %}
67 |             <li>{{ info }}</li>
68 |           {% endfor %}
69 |         </div>
70 |       {% endif %}
71 | ```
72 | 


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/composer.json:
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 1 | {
 2 |     "name": "knplabs/migration-service-provider",
 3 |     "type": "library",
 4 |     "description": "Doctrine migration service provider for Silex",
 5 |     "keywords": [ "doctrine2", "silex", "migration" ],
 6 |     "homepage": "http://knplabs.com",
 7 |     "license": "MIT",
 8 |     "authors": [
 9 |         {
10 |             "name":     "KnpLabs",
11 |             "homepage": "http://knplabs.com"
12 |         }
13 |     ],
14 |     "require": {
15 |         "php":                              ">=5.3.2",
16 |         "doctrine/dbal":                    "~2.1",
17 |         "symfony/finder":                   "2.1.*",
18 |         "knplabs/console-service-provider": "1.1.*"
19 |     },
20 |     "autoload": {
21 |         "psr-0": {
22 |             "Knp\\": ""
23 |         }
24 |     }
25 | }
26 | 


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