Question

如何将_prepareCollection和_prepareColumn从核心覆盖到本地。我想在网格中添加新列。怎么做？

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


protected function _prepareColumns()
  {
      $this->addColumn('player_id', array(
          'header'    => Mage::helper('players')->__('ID'),
          'align'     =>'right',
          'width'     => '50px',
          'index'     => 'player_id',
      ));

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

      return parent::_prepareColumns();
  }

Answer 1

有两种方法可以做到这一点。第一个，虽然更容易不是首选，是“本地包括黑客”它并将网格从core / Mage /../ ..移动到local / Mage ../ ..并且只需要进行更改。

另一种方法是在模块config.xml中重写文件：

    <blocks>
        <customadminhtml>
            <class>Namespace_CustomAdminhtml_Block</class>
        </customadminhtml>
        <adminhtml>
            <rewrite>
                <sales_order_grid>Namespace_CustomAdminhtml_Block_Adminhtml_Sales_Order_Grid</sales_order_grid>
            </rewrite>
        </adminhtml>
    </blocks>

在重写的文件中，我不会同时试图覆盖“_prepareCollection”调用。如何调用它并设置集合，从逻辑上讲，您无法正确插入更改并仍保持原始功能。相反，我会覆盖“setCollection”方法。通过这样做，您可以维护原始_prepareCollection函数的逻辑，并可以将您的逻辑插入到流中：

/**
* @brief Add customer_email to sales order
* @param Mage_Sales_Model_Resource_order_grid_collection $collection
*/
public function setCollection($collection)
{
    /** @var Mage_Eav_Model_Config $eav */
    $eav       = Mage::getModel('eav/config');
    $attribute = $eav->getAttribute('customer', 'customer_number');

    $connection = $collection->getConnection();
    $collection->join(array('sfo' => 'sales/order'), 'main_table.entity_id=sfo.entity_id', 'customer_email');

    if ($attribute->getId()) {
        $collection->getSelect()
            ->joinLeft(array('c' => $connection->getTableName('customer_entity_varchar')),
                       'main_table.customer_id = c.entity_id AND c.attribute_id = '.$attribute->getId(),
                       array('customer_number' => 'value'));
    }

    parent::setCollection($collection);
}

最后，您可以通过覆盖普通的“_prepareColumns”函数来添加列，只需先调用父级：

public function _prepareColumns()
{
    parent::_prepareColumns();

    $this->addColumnAfter('customer_email', array(
                                                 'header' => Mage::helper('customer')->__('Customer Email'),
                                                 'width'  => '50px',
                                                 'index'  => 'customer_email',
                                            ), 'shipping_name');

    $this->sortColumnsByOrder();
    return $this;
}

如何在Magento Admin中覆盖_prepareCollection和_prepareColumns

1 个答案: