Model/Rewards.php <?php namespace MagePal\TestDiscount\Model; use Magento\Framework\Model\AbstractModel; class Rewards extends AbstractModel { protected function _construct() { $this->_init('MagePal\TestDiscount\Model\Resource\Rewards'); } } Model/resource/Rewards.php <?php namespace MagePal\TestDiscount\Model\Resource; use \Magento\Framework\Model\ResourceModel\Db\AbstractDb; class Rewards extends \Magento\Framework\Model\ResourceModel\Db\AbstractDb { protected function _construct() { $this->_init('mjweb_customer_rewards','id'); } } Model/Rewards/Collection.php <?php namespace...