addColumn('{{%accounts}}', 'lang', $this->string(5)->notNull()->defaultValue('en')->after('password_hash_strategy')); $this->dropColumn('{{%accounts}}', 'password_reset_token'); } public function safeDown() { $this->dropColumn('{{%accounts}}', 'lang'); $this->addColumn('{{%accounts}}', 'password_reset_token', $this->string()->unique()); } }