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Customize or Merge the fields in admin grid Magento

Sometimes we need to customize the columns of grid list other than the table fields. Like, merging two fields into one column or displaying content after conditional check.

For this we need to add a renderer. Renderer is the class that can render the values of a column by manipulating the data and outputting the data as we like.

For this,
1. Create a folder Renderer inside "Block/Adminhtml" of our module.
2. Create a file Somefilename.php with following contents

class Organicfeast_Customshipping_Block_Adminhtml_Renderer_Suburbname extends Mage_Adminhtml_Block_Widget_Grid_Column_Renderer_Abstract {

    public function render(Varien_Object $row) {
                if ($row->getData('first_name') != NULL || $row->getData('last_name') != NULL) {
            $firstName = $row->getData('first_name');
                    $lastName = $row->getData('last_name');
            if ($lastName != NULL) {
                return $firstName . ' ' . $lastName;
                    } else {
                return $firstName;
            }
            } else {
                return Mage::helper('dailydeal')->__('NO NAME ASSIGNED');
            }
    }
}


3. Finally, call this file at the Grid.php

  protected function _prepareColumns() {
        $this->addColumn("suburb_id", array(
            "header" => Mage::helper("customshipping")->__("ID"),
            "align" => "right",
            "width" => "50px",
            "type" => "number",
            "index" => "suburb_id",
        ));

        $this->addColumn("suburb_name", array(
            "header" => Mage::helper("customshipping")->__("Suburb Name"),
            "index" => "suburb_name",
        ));

           $this->addColumn("monday", array(
            "header" => Mage::helper("customshipping")->__("Monday"),
            "index" => "monday",
            "renderer" => new Organicfeast_Customshipping_Block_Adminhtml_Renderer_Suburbname
        ));
}


Now we can get the customized column in our grid.



Cheers!!!
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