Question

我使用此代码列出子类别

$root = Mage::getModel('catalog/category')->load(3); // Put your category ID here.
$subCat = explode(',',$root->getChildren()); 
$collection  = $root->getCollection()->addAttributeToSelect("*")->addFieldToFilter("entity_id", array("in", $subCat) );
foreach($collection as $subcategory) { 
  echo '<a href="'.$subcategory->getURL() .'" />» '.$subcategory->getName().'</a><br/>';
}

我想只显示前3个子类别。我该怎么办？

Answer 1

使用

$collection
    // ->addFieldToFilter...
    ->setPageSize(20)
    ->setCurPage(1);

Answer 2

尝试为集合添加限制此外，您可以获得根目录ID而无需对其进行硬编码您也不需要所有的根儿童ID。您可以按父ID过滤集合。

$rootId = Mage::app()->getStore()->getRootCategoryId();
$collection  = Mage::getModel('catalog/category')->getCollection()->addAttributeToSelect("*")
            ->addFieldToFilter("parent_id", $rootId);
$collection->addAttributeToSort('position'); //sort by position
$collection->setPage(1, 3);//limit 3, page 1
foreach($collection as $subcategory) { 
   echo '<a href="'.$subcategory->getURL() .'" />» '.$subcategory->getName().'</a><br/>';
}

Answer 3

使用以下

$collection= Mage::getModel('catalog/category')
->getCollection()
->setPageSize(3);
echo $collection->count();

magento子类别限制

3 个答案: