24. Magento 创建新闻模块(4)

最新推荐文章于 2016-03-10 06:20:58 发布

enlyhua

最新推荐文章于 2016-03-10 06:20:58 发布

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文章标签：函数新闻 magento

本文介绍如何在Magento中为新闻模块添加批量操作功能，包括批量删除和更改状态等，通过修改GridBlock和后台控制器实现。

在上一节的Magento新闻模块开发中，我们已经为新闻模块创建了后台，使我们可以在后台添加、修改和删除新闻，这一节我们我们将增加批量的功能，使我们可以在后台批量修改和删除新闻。

1 修改Grid Block
首先在/app/code/local/Www/News/Block/Adminhtml/News/Grid.php中添加_prepareMassaction()函数

<?php

class Www_News_Block_Adminhtml_News_Grid extends Mage_Adminhtml_Block_Widget_Grid
{
    //...

    protected function _prepareMassaction()
    {
        $this->setMassactionIdField('news_id');
        $this->getMassactionBlock()->setFormFieldName('news');

        $this->getMassactionBlock()->addItem('delete', array(
             'label' => Mage::helper('news')->__('Delete'),
             'url' => $this->getUrl('*/*/massDelete'),
             'confirm' => Mage::helper('news')->__('Are you sure?')
        ));

        $statuses = Mage::getSingleton('news/news')->getStatusesOptionsArray();

        array_unshift($statuses, array('label'=>'', 'value'=>''));

        $this->getMassactionBlock()->addItem('status', array(
            'label' => Mage::helper('news')->__('Change status'),
            'url' => $this->getUrl('*/*/massStatus', array('_current'=>true)),
            'additional' => array(
                'visibility' => array(
                    'name' => 'status',
                    'type' => 'select',
                    'class' => 'required-entry',
                    'label' => Mage::helper('news')->__('Status'),
                    'values' => $statuses
                )
            )
        ));
        return $this;
    }
}

以上的代码使用了getStatusesOptionsArray()函数，我们在/app/code/local/MagentoBoy/News/Model/News.php中添加：

<?php

class Www_News_Model_News extends Mage_Core_Model_Abstract
{
    //...

    public function getStatusesOptionsArray()
    {
        return array(
            array(
                'label' => Mage::helper('news')->__('Enabled'),
                'value' => self::STATUS_ENABLED
            ),
            array(
                'label' => Mage::helper('news')->__('Disabled'),
                'value' => self::STATUS_DISABLED
            )
        );
    }
}

刷新后台我们将观察到在表格的顶部出现了批量选择的工具栏，在Action选择框中我们可以选择Delete和Change status，当选择Change status时选择框右边将会显示Status选择框，可以选择Enabled和Disabled，并且在每条新闻记录的左侧出现了选择框。

2 修改后台控制器

上面的代码中，我们使用了$this->getUrl('*/*/massDelete')和$this->getUrl('*/*/massStatus', array('_current'=>true))作为批量删除和修改的提交地址，现在我们需要在后台控制器中添加massDelete()和massStatus()函数。
修改/app/code/local/Www/News/controllers/Adminhtml/NewsController.php

<?php

class Www_News_Adminhtml_NewsController extends Mage_Adminhtml_Controller_Action
{
    //...

    protected function _prepareMassaction()
    {
        $this->setMassactionIdField('news_id');
        $this->getMassactionBlock()->setFormFieldName('news');

        $this->getMassactionBlock()->addItem('delete', array(
             'label' => Mage::helper('news')->__('Delete'),
             'url' => $this->getUrl('*/*/massDelete'),
             'confirm' => Mage::helper('news')->__('Are you sure?')
        ));

        $statuses = Mage::getSingleton('news/news')->getStatusesOptionsArray();

        array_unshift($statuses, array('label'=>'', 'value'=>''));

        $this->getMassactionBlock()->addItem('status', array(
            'label' => Mage::helper('news')->__('Change status'),
            'url' => $this->getUrl('*/*/massStatus', array('_current'=>true)),
            'additional' => array(
                'visibility' => array(
                    'name' => 'status',
                    'type' => 'select',
                    'class' => 'required-entry',
                    'label' => Mage::helper('news')->__('Status'),
                    'values' => $statuses
                )
            )
        ));
        return $this;
    }
}