magento新闻模块开发(二)

Magento提供了强大的Grid Widget使我们能够方便的创建数据表格，现在我们为新闻模块创建后台数据表格。

修改config.xml配置文件，添加admin路由

<config>
<admin>
<routers>
<news>
<use>admin</use>
<args>
<module>Xinson_News</module>
<frontName>news</frontName>
</args>
</news>
</routers>
</admin>
</config>

添加后台菜单

/app/code/local/Xinson/News/etc/adminhtml.xml 加到cms菜单里面。

<?xml version="1.0"?>
<config>
<menu>
<cms>
<children>
<news translate="title" module="news">
<title>News</title>
<action>news/adminhtml_news</action>
<sort_order>40</sort_order>
</news>
</children>
</cms>
</menu>
<acl>
<resources>
<admin>
<children>
<cms>
<children>
<news translate="title" module="news">
<title>News</title>
<sort_order>40</sort_order>
</news>
</children>
</cms>
</children>
</admin>
</resources>
</acl>
</config>

添加Grid表格

后台控制器indexAction

/app/code/local/Xinson/News/controllers/Adminhtml/NewsController.php

<?php

class Xinson_News_Adminhtml_NewsController extends Mage_Adminhtml_Controller_Action
{
public function indexAction()
{
$this->_title($this->__('CMS'))->_title($this->__('News'));

$this->loadLayout();
$this->_setActiveMenu('cms/news');//当前选中状态
$this->_addBreadcrumb(Mage::helper('adminhtml')->__('News Manager'), Mage::helper('adminhtml')->__('News Manager'));//Mage::helper('adminhtml')->__ 这样是访问语言包  $this->__addBreadcrumb

$this->_addContent($this->getLayout()->createBlock('news/adminhtml_news'));//增加block
$this->renderLayout();
}
}

添加Block

/app/code/local/Xinson/News/Block/Adminhtml/News.php

<?php

class Xinson_News_Block_Adminhtml_News extends Mage_Adminhtml_Block_Widget_Grid_Container
{
public function __construct()
{
$this->_controller = 'adminhtml_news'; //就是 Adminhtml/NewsController.php
$this->_blockGroup = 'news'; //这是block组
$this->_headerText = Mage::helper('news')->__('News Manager');
$this->_addButtonLabel = Mage::helper('news')->__('Add News');
parent::__construct();
}
}

添加grid文件

/app/code/local/Xinson/News/Block/Adminhtml/News/Grid.php

<?php

class Xinson_News_Block_Adminhtml_News_Grid extends Mage_Adminhtml_Block_Widget_Grid
{
public function __construct()
{
parent::__construct();
$this->setId('newsGrid');
$this->setDefaultSort('news_id');
$this->setDefaultDir('ASC');
$this->setSaveParametersInSession(true);
}

protected function _prepareCollection()
{
$collection = Mage::getModel('news/news')->getCollection();
$this->setCollection($collection);
return parent::_prepareCollection();
}
// 加列表 列值
protected function _prepareColumns()
{
$this->addColumn('news_id', array(
'header' => Mage::helper('news')->__('ID'),
'align' =>'right',
'width' => '50px',
'index' => 'news_id',
));

$this->addColumn('title', array(
'header' => Mage::helper('news')->__('Title'),
'align' =>'left',
'index' => 'title',
));

$this->addColumn('is_active', array(
'header' => Mage::helper('news')->__('Status'),
'align' => 'left',
'width' => '80px',
'index' => 'is_active',
'type' => 'options',
'options' => Mage::getSingleton('news/news')->getAvailableStatuses(),
));

$this->addColumn('created_at', array(
'header' => Mage::helper('news')->__('Created At'),
'align' =>'left',
'width' => '180px',
'type' => 'datetime',
'index' => 'created_at',
));

$this->addColumn('updated_at', array(
'header' => Mage::helper('news')->__('Updated At'),
'align' =>'left',
'width' => '180px',
'type' => 'datetime',
'index' => 'updated_at',
));

$this->addColumn('action',
array(
'header' => Mage::helper('news')->__('Action'),
'width' => '50px',
'type' => 'action',
'getter' => 'getId',
'actions' => array(
array(
'caption' => Mage::helper('news')->__('Edit'),
'url' => array('base'=>'*/*/edit'),
'field' => 'id'
)
),
'filter' => false,
'sortable' => false,
'index' => 'stores',
));

return parent::_prepareColumns();
}

public function getRowUrl($row)
{
return $this->getUrl('*/*/edit', array('id' => $row->getId()));
}
}

由于 _prepareColumns有 Mage::getSingleton('news/news')->getAvailableStatuses()

在 /app/code/local/Xinson/News/Model/News.php中添加getAvailableStatuses()方法

<?php

class Xinson_News_Model_News extends Mage_Core_Model_Abstract
{
//....

const STATUS_ENABLED = 1;
const STATUS_DISABLED = 0;

public function getAvailableStatuses()
{
$statuses = new Varien_Object(array(
self::STATUS_ENABLED => Mage::helper('news')->__('Enabled'),
self::STATUS_DISABLED => Mage::helper('news')->__('Disabled'),
));

return $statuses->getData();
}
}

新闻模块创建和编辑

添加后台控制器的newAction和editAction方法

/app/code/local/Xinson/News/controllers/Adminhtml/NewsController.php

<?php

class Xinson_News_Adminhtml_NewsController extends Mage_Adminhtml_Controller_Action
{
//...

public function newAction()
{
$this->getRequest()->setParam('id', 0);
$this->_forward('edit');
}

public function editAction()
{
$this->_title($this->__('CMS'))->_title($this->__('News'));

$newsId = $this->getRequest()->getParam('id');
$newsModel = Mage::getModel('news/news')->load($newsId);

if ($newsModel->getId() || $newsId == 0) {
$this->_title($newsModel->getId() ? $newsModel->getTitle() : $this->__('New News'));

Mage::register('news_data', $newsModel);

$this->loadLayout();
$this->_setActiveMenu('cms/news');
$this->_addBreadcrumb(Mage::helper('adminhtml')->__('News Manager'), Mage::helper('adminhtml')->__('News Manager'), $this->getUrl('*/*/'));
$this->_addBreadcrumb(Mage::helper('adminhtml')->__('Edit News'), Mage::helper('adminhtml')->__('Edit News'));

$this->getLayout()->getBlock('head')->setCanLoadExtJs(true);
$this->_addContent($this->getLayout()->createBlock('news/adminhtml_news_edit'))
->_addLeft($this->getLayout()->createBlock('news/adminhtml_news_edit_tabs'));

$this->renderLayout();
} else {
Mage::getSingleton('adminhtml/session')->addError(Mage::helper('news')->__('The news does not exist.'));
$this->_redirect('*/*/');
}
}
}

添加Form Container


/app/code/local/Xinson/News/Block/Adminhtml/News/Edit.php

<?php

class Xinson_News_Block_Adminhtml_News_Edit extends Mage_Adminhtml_Block_Widget_Form_Container
{
public function __construct()
{
$this->_objectId = 'id';
$this->_blockGroup = 'news';
$this->_controller = 'adminhtml_news';

parent::__construct();
//更新按钮文字
$this->_updateButton('save', 'label', Mage::helper('news')->__('Save News'));
$this->_updateButton('delete', 'label', Mage::helper('news')->__('Delete News'));
}

public function getHeaderText()
{
//判断区分 新增和编辑
if(Mage::registry('news_data') && Mage::registry('news_data')->getId()) {
return Mage::helper('news')->__("Edit News '%s'", $this->htmlEscape(Mage::registry('news_data')->getTitle()));
} else {
return Mage::helper('news')->__('Add News');
}
}
}

添加Form

/app/code/local/Xinson/News/Block/Adminhtml/News/Edit/Form.php

<?php

class Xinson_News_Block_Adminhtml_News_Edit_Form extends Mage_Adminhtml_Block_Widget_Form
{
//编辑的form的参数，action地址
protected function _prepareForm()
{
$form = new Varien_Data_Form(array(
'id' => 'edit_form',
'action' => $this->getUrl('*/*/save', array('id' => $this->getRequest()->getParam('id'))),
'method' => 'post',
));

$form->setUseContainer(true);
$this->setForm($form);
return parent::_prepareForm();
}
}

添加Tabs

/app/code/local/Xinson/News/Block/Adminhtml/News/Edit/Tabs.php

<?php
//这是左边栏
class Xinson_News_Block_Adminhtml_News_Edit_Tabs extends Mage_Adminhtml_Block_Widget_Tabs
{

public function __construct()
{
parent::__construct();
$this->setId('news_tabs');
$this->setDestElementId('edit_form');
$this->setTitle(Mage::helper('news')->__('News Information'));
}

protected function _beforeToHtml()
{
$this->addTab('form_section', array(
'label' => Mage::helper('news')->__('News Information'),
'title' => Mage::helper('news')->__('News Information'),
'content' => $this->getLayout()->createBlock('news/adminhtml_news_edit_tabs_form')->toHtml(),
));

return parent::_beforeToHtml();
}
}

添加Tab Form

/app/code/local/Xinson/News/Block/Adminhtml/News/Edit/Tabs/Form.php

<?php
//这是编辑区
class Xinson_News_Block_Adminhtml_News_Edit_Tabs_Form extends Mage_Adminhtml_Block_Widget_Form
{
protected function _prepareForm()
{
$model = Mage::registry('news_data');

$form = new Varien_Data_Form();

$fieldset = $form->addFieldset('news_form', array('legend'=>Mage::helper('news')->__('News information')));

if ($model->getNewsId()) {
$fieldset->addField('news_id', 'hidden', array(
'name' => 'news_id',
));
}
$fieldset->addField('title', 'text', array(
'name' => 'title',
'label' => Mage::helper('news')->__('News Title'),
'title' => Mage::helper('news')->__('News Title'),
'required' => true,
));

$fieldset->addField('is_active', 'select', array(
'name' => 'is_active',
'label' => Mage::helper('news')->__('Status'),
'title' => Mage::helper('news')->__('News Status'),
'required' => true,
'options' => $model->getAvailableStatuses(),
));

$fieldset->addField('content', 'editor', array(
'name' => 'content',
'label' => Mage::helper('news')->__('Content'),
'title' => Mage::helper('news')->__('Content'),
'required' => true,
'style' => 'width:700px; height:300px;',
));

$form->setValues($model->getData());
$this->setForm($form);

return parent::_prepareForm();
}
}

刷新后台页面，点击Add News按钮新建新闻或点击表格中的某一行编辑新闻，观察是否显示编辑表单，下面我们为表单添加保存和删除的功能。

后台控制器的saveAction和deleteAction

/app/code/local/Xinson/News/controllers/Adminhtml/NewsController.php

<?php

class Xinson_News_Adminhtml_NewsController extends Mage_Adminhtml_Controller_Action
{
//...

public function saveAction()
{
if ($data = $this->getRequest()->getPost()) {

$id = $this->getRequest()->getParam('id');
$model = Mage::getModel('news/news')->load($id);
if (!$model->getId() && $id) {
Mage::getSingleton('adminhtml/session')->addError(Mage::helper('news')->__('This news no longer exists.'));
$this->_redirect('*/*/');
return;
}

if ($model->getCreatedAt() == NULL || $model->getUpdatedAt() == NULL) {
$data['created_at'] = now();
$data['updated_at'] = now();
} else {
$data['updated_at'] = now();
}
$model->setData($data);

try {
$model->save();

Mage::getSingleton('adminhtml/session')->addSuccess(Mage::helper('news')->__('The news has been saved.'));

Mage::getSingleton('adminhtml/session')->setFormData(false);

if ($this->getRequest()->getParam('back')) {
$this->_redirect('*/*/edit', array('id' => $model->getId(), '_current'=>true));
return;
}

$this->_redirect('*/*/');
return;
} catch (Exception $e) {
Mage::getSingleton('adminhtml/session')->addError($e->getMessage());
Mage::getSingleton('adminhtml/session')->setFormData($data);
$this->_redirect('*/*/edit', array('id' => $this->getRequest()->getParam('id')));
return;
}
}
$this->_redirect('*/*/');
}

public function deleteAction()
{
if ($id = $this->getRequest()->getParam('id')) {
try {
$model = Mage::getModel('news/news');
$model->setId($id);
$model->delete();
Mage::getSingleton('adminhtml/session')->addSuccess(Mage::helper('news')->__('The news has been deleted.'));
$this->_redirect('*/*/');
return;
} catch (Exception $e) {
Mage::getSingleton('adminhtml/session')->addError($e->getMessage());
$this->_redirect('*/*/edit', array('id' => $this->getRequest()->getParam('id')));
return;
}
}
Mage::getSingleton('adminhtml/session')->addError(Mage::helper('news')->__('Unable to find a news to delete.'));
$this->_redirect('*/*/');
}
}