addColumn('product_price', 'percent', Schema::TYPE_INTEGER) ; } public function safeDown() { $this->dropColumn('product_price', 'percent') ; return false; } /* // Use up()/down() to run migration code without a transaction. public function up() { } public function down() { echo "m201207_164410_specific_prices_percent cannot be reverted.\n"; return false; } */ }