Add extension rollback command

framework/core/src/Console/Server.php

@@ -14,6 +14,7 @@ namespace Flarum\Console;
 use Flarum\Console\Event\Configuring;
 use Flarum\Database\Console\GenerateMigrationCommand;
 use Flarum\Database\Console\MigrateCommand;
+use Flarum\Database\Console\RollbackCommand;
 use Flarum\Foundation\Application;
 use Flarum\Foundation\Console\CacheClearCommand;
 use Flarum\Foundation\Console\InfoCommand;
@@ -58,6 +59,7 @@ class Server
         $commands = [
             InstallCommand::class,
             MigrateCommand::class,
+            RollbackCommand::class,
             GenerateMigrationCommand::class,
         ];
 

framework/core/src/Database/Console/RollbackCommand.php

@@ -0,0 +1,74 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Database\Console;
+
+use Flarum\Console\AbstractCommand;
+use Flarum\Extension\ExtensionManager;
+use Symfony\Component\Console\Input\InputArgument;
+
+class RollbackCommand extends AbstractCommand
+{
+    /**
+     * @var ExtensionManager
+     */
+    protected $manager;
+
+    /**
+     * @param ExtensionManager $manager
+     */
+    public function __construct(ExtensionManager $manager)
+    {
+        $this->manager = $manager;
+
+        parent::__construct();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('migrate:rollback')
+            ->setDescription('Run rollback migrations for an extension')
+            ->addArgument(
+                'extension',
+                InputArgument::REQUIRED,
+                'The name of the extension.'
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function fire()
+    {
+        $extensionName = $this->input->getArgument('extension');
+        $extension = $this->manager->getExtension($extensionName);
+
+        if (!$extension) {
+            $this->info('Could not find extension ' . $extensionName);
+
+            return;
+        }
+
+        $this->info('Rolling back extension: ' . $extensionName);
+
+        $notes = $this->manager->migrateDown($extension);
+
+        foreach ($notes as $note) {
+            $this->info($note);
+        }
+
+        $this->info('DONE.');
+    }
+}

framework/core/src/Extension/ExtensionManager.php

@@ -247,10 +247,11 @@ class ExtensionManager
      * Runs the database migrations to reset the database to its old state.
      *
      * @param Extension $extension
+     * @return array Notes from the migrator.
      */
     public function migrateDown(Extension $extension)
     {
-        $this->migrate($extension, false);
+        return $this->migrate($extension, false);
     }
 
     /**