Grid is showing blank page not loading grid data

[Shoaib_Fareedi]

I have created a custom module one part is working fine that is adminform now i have create a grid to show all the data saved in database. But all i get is blank page.

Here is my grid.php file:

<?php

   class OptFirst_ReviewMyCompany_Block_Adminhtml_Review_Grid extends
Mage_Adminhtml_Block_Widget_Grid
   {
public function getGridUrl()
    {
    return $this->getUrl('*/*/grid', array('_current' => true));
         }

   public function __construct()
      {
    parent::__construct();
    $this->setId('reviewGrid');
    $this->setDefaultSort('id');
    $this->setDefaultDir('ASC');
    $this->setSaveParametersInSession(true);
}

protected function _prepareCollection()
{
    $collection = Mage::getModel('optfirst_reviewmycompany/review')->getCollection();
    print_r($collection);
    $this->setCollection($collection);
    return parent::_prepareCollection();
}

protected function _prepareColumns()
{
    $this->addColumn('id', array(
        'header' => Mage::helper('reviewmycompany')->__('ID'),
        'align' => 'right',
        'width' => '10px',
        'index' => 'id',
        ));

    $this->addColumn('name', array(
        'header' => Mage::helper('reviewmycompany')->__('Name'),
        'align' => 'left',
        'index' => 'name',
        'width' => '50px',
        ));


    $this->addColumn('content', array(
        'header' => Mage::helper('reviewmycompany')->__('Description'),
        'width' => '150px',
        'index' => 'content',
        ));
    return parent::_prepareColumns();
}

}

And here is my controller:

<?php

       class OptFirst_ReviewMyCompany_Adminhtml_ReviewController extends Mage_Adminhtml_Controller_action
        {

  public functio  indexAction() {
    $this->loadLayout();
            $this->renderLayout();

}
public function gridAction()
{
    $this->loadLayout();
    $this->getResponse()->setBody(
        $this->getLayout()->createBlock('reviewmycompany/adminhtml_review_grid')->toHtml()
    );
}

}

Can you please check what is wrong and why its not showing the grid container.

Thanks!

[Gabriel Guarino]

Hi @Shoaib_Fareedi,

Have you created the UI Component for the grid? You need that in order to render the grid, provide pagination, sorting and other features.

Here is a reference from the Magento 2 Developer Documentation:

http://devdocs.magento.com/guides/v2.0/ui-components/ui-listing-grid.html

Best regards.

Gabriel