dbforge->add_field([ 'id' => array('type' => 'INT','constraint' => 11,'unsigned' => TRUE,'auto_increment' => TRUE), 'order_id' => array('type' => 'INT', 'constraint' => 11, 'null' => TRUE), 'user_id' => array('type' => 'INT', 'constraint' => 11, 'null' => TRUE), 'amount' => array('type' => 'VARCHAR', 'constraint' => '255'), 'reason' => array('type' => 'VARCHAR', 'constraint' => '255'), 'explanation' => array('type' => 'TEXT', 'null' => TRUE), 'receipt_url' => array('type' => 'VARCHAR', 'constraint' => '255'), 'stripe_charge_id' => array('type' => 'VARCHAR', 'constraint' => '255'), 'stripe_invoice_id' => array('type' => 'VARCHAR', 'constraint' => '255'), 'status' => array('type' => 'VARCHAR', 'constraint' => '255'), 'created_at' => array('type' => 'DATE', 'null' => TRUE), 'updated_at' => array('type' => 'DATETIME', 'null' => TRUE)]); $this->dbforge->add_key('id', TRUE); $this->dbforge->create_table('refund'); } public function down() { $this->dbforge->drop_table('refund'); } }