Magento块附带空输出 [英] Magento Block Coming with empty output
本文介绍了Magento块附带空输出的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我创建了简单的新闻模块.提供前端和后端的功能.管理员功能正常运行.
I have created simple News Module. which serves functionality from frontend as well as backend. Admin functionality works fine.
但是在前端，
- 我有两页. i)新闻列表页面 ii)新闻详细信息页面
- I have two pages. i) News List page ii) News Detail Page
此处新闻列表页面运行正常.但是新闻详细信息页面的结果是空的.
Here News list page is working perfect. But the News detail page is coming with empty result.
<?xml version="1.0"?>
<!--
/**
* Module configuration
*
* @author Magento
*/
-->
<config>
<modules>
<Magentostudy_News>
<version>1.0.0.0.1</version>
</Magentostudy_News>
</modules>
<global>
<models>
<magentostudy_news>
<class>Magentostudy_News_Model</class>
<resourceModel>news_resource</resourceModel>
</magentostudy_news>
<news_resource>
<class>Magentostudy_News_Model_Resource</class>
<entities>
<news>
<table>magentostudy_news</table>
</news>
</entities>
</news_resource>
</models>
<helpers>
<magentostudy_news>
<class>Magentostudy_News_Helper</class>
</magentostudy_news>
</helpers>
<blocks>
<magentostudy_news>
<class>Magentostudy_News_Block</class>
</magentostudy_news>
</blocks>
<resources>
<magentostudy_news_setup>
<setup>
<module>Magentostudy_News</module>
<class>Mage_Core_Model_Resource_Setup</class>
</setup>
</magentostudy_news_setup>
</resources>
<!-- <events>
<before_news_item_display>
<observers>
<magentostudy_news>
<class>magentostudy_news/observer</class>
<method>beforeNewsDisplayed</method>
</magentostudy_news>
</observers>
</before_news_item_display>
</events>-->
</global>
<frontend>
<routers>
<magentostudy_news>
<use>standard</use>
<args>
<module>Magentostudy_News</module>
<frontName>news</frontName>
</args>
</magentostudy_news>
</routers>
<layout>
<updates>
<magentostudy_news>
<file>magentostudy_news.xml</file>
</magentostudy_news>
</updates>
</layout>
</frontend>
<admin>
<routers>
<adminhtml>
<args>
<modules>
<Magentostudy_News before="Mage_Adminhtml">Magentostudy_News_Adminhtml</Magentostudy_News>
</modules>
</args>
</adminhtml>
</routers>
</admin>
<adminhtml>
<layout>
<updates>
<magentostudy_news>
<file>magentostudy_news.xml</file>
</magentostudy_news>
</updates>
</layout>
</adminhtml>
<default>
<news>
<view>
<enabled>1</enabled>
<items_per_page>20</items_per_page>
<days_difference>3</days_difference>
</view>
</news>
</default>
</config>
索引控制器
<?php
/**
* News frontend controller
*
* @author Magento
*/
class Magentostudy_News_IndexController extends Mage_Core_Controller_Front_Action
{
/**
* Pre dispatch action that allows to redirect to no route page in case of disabled extension through admin panel
*/
public function preDispatch()
{
parent::preDispatch();
if (!Mage::helper('magentostudy_news')->isEnabled()) {
$this->setFlag('', 'no-dispatch', true);
$this->_redirect('noRoute');
}
}
/**
* Index action
*/
public function indexAction()
{
$this->loadLayout();
$listBlock = $this->getLayout()->getBlock('news.list');
if ($listBlock) {
$currentPage = abs(intval($this->getRequest()->getParam('p')));
if ($currentPage < 1) {
$currentPage = 1;
}
$listBlock->setCurrentPage($currentPage);
}
$this->renderLayout();
}
/**
* News view action
*/
public function viewAction()
{
$newsId = $this->getRequest()->getParam('id');
if (!$newsId) {
return $this->_forward('noRoute');
}
/** @var $model Magentostudy_News_Model_News */
$model = Mage::getModel('magentostudy_news/news');
$model->load($newsId);
if (!$model->getId()) {
return $this->_forward('noRoute');
}
Mage::register('news_item', $model);
Mage::dispatchEvent('before_news_item_display', array('news_item' => $model));
$this->loadLayout();
$itemBlock = $this->getLayout()->getBlock('news.item');
if ($itemBlock) {
$listBlock = $this->getLayout()->getBlock('news.list');
if ($listBlock) {
$page = (int)$listBlock->getCurrentPage() ? (int)$listBlock->getCurrentPage() : 1;
} else {
$page = 1;
}
$itemBlock->setPage($page);
}
$this->renderLayout();
}
}
阻止文件:Item.php
<?php
/**
* News Item block
*
* @author Magento
*/
class Magentostudy_News_Block_Item extends Mage_Core_Block_Template
{
/**
* Current news item instance
*
* @var Magentostudy_News_Model_News
*/
protected $_item;
/**
* Return parameters for back url
*
* @param array $additionalParams
* @return array
*/
protected function _getBackUrlQueryParams($additionalParams = array())
{
return array_merge(array('p' => $this->getPage()), $additionalParams);
}
/**
* Return URL to the news list page
*
* @return string
*/
public function getBackUrl()
{
return $this->getUrl('*/', array('_query' => $this->_getBackUrlQueryParams()));
}
/**
* Return URL for resized News Item image
*
* @param Magentostudy_News_Model_News $item
* @param integer $width
* @return string|false
*/
public function getImageUrl($item, $width)
{
return Mage::helper('magentostudy_news/image')->resize($item, $width);
}
}
布局文件:Magentostudy_news.xml
<?xml version="1.0"?>
<!--
/**
* Magento frontend layout
*
* @author Magento
*/
-->
<layout version="0.1.0">
<default>
<reference name="footer_links">
<action method="addLink" translate="label title" module="magentostudy_news" ifconfig="news/view/enabled">
<label>News</label>
<url>news</url>
<title>News</title>
<prepare>true</prepare>
</action>
</reference>
</default>
<magentostudy_news_index_index translate="label">
<label>News Page</label>
<reference name="root">
<action method="setTemplate">
<template>page/2columns-right.phtml</template>
</action>
<action method="setHeaderTitle" translate="title" module="magentostudy_news">
<title>Site News</title>
</action>
</reference>
<reference name="content">
<block type="magentostudy_news/list" name="news.list" template="magentostudy/news/list.phtml">
<block type="page/html_pager" name="news.list.pager" as="news_list_pager" />
</block>
</reference>
</magentostudy_news_index_index>
<magentostudy_news_index_view translate="label">
<label>News Item Page</label>
<reference name="root">
<action method="setTemplate">
<template>page/2columns-right.phtml</template>
</action>
</reference>
<reference name="content">
<block type="magentostudy_news/news" name="news.item" template="magentostudy/news/item.phtml" />
</reference>
</magentostudy_news_index_view>
</layout>
新闻/item.phtml
<?php
/**
* News template for separate item
*
* @author Magento
*/
/**
* @var $this Magentostudy_News_Block_Item
* @see Magentostudy_News_Block_Item
*/
?>
<?php $_newsItem = $this->helper('magentostudy_news')->getNewsItemInstance();
?>
<div id="news_item_messages"><?php echo $this->getMessagesBlock()->getGroupedHtml() ?></div>
<div>
<h1><?php echo $this->escapeHtml($_newsItem->getTitle()) ?></h1>
<div>
<?php echo $this->formatDate($_newsItem->getTimePublished(),
Mage_Core_Model_Locale::FORMAT_TYPE_MEDIUM) ?> |
<?php echo $this->escapeHtml($_newsItem->getAuthor()) ?>
</div>
</div>
<div>
<?php if ($imageUrl = $this->getImageUrl($_newsItem, 400)): ?>
<p><img src="<?php echo $imageUrl ?>" alt="<?php echo $this->escapeHtml($_newsItem->getTitle()) ?>" /></p>
<?php endif; ?>
<div><?php echo $_newsItem->getContent() ?></div>
<div>
<a href="<?php echo $this->getBackUrl() ?>">
<?php echo Mage::helper('magentostudy_news')->__('Return to list') ?>
</a>
</div>
</div>
推荐答案
为什么在视图中有setPage?
Why do you have setPage in your view?
$this->loadLayout();
$itemBlock = $this->getLayout()->getBlock('news.item');
if ($itemBlock) {
$listBlock = $this->getLayout()->getBlock('news.list');
if ($listBlock) {
$page = (int)$listBlock->getCurrentPage() ? (int)$listBlock->getCurrentPage() : 1;
} else {
$page = 1;
}
$itemBlock->setPage($page);
您尝试删除它吗?
$this->loadLayout();
$itemBlock = $this->getLayout()->getBlock('news.item');
/* if ($itemBlock) {
$listBlock = $this->getLayout()->getBlock('news.list');
if ($listBlock) {
$page = (int)$listBlock->getCurrentPage() ? (int)$listBlock->getCurrentPage() : 1;
} else {
$page = 1;
}
$itemBlock->setPage($page);
*/
这篇关于Magento块附带空输出的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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