magento 从类别中获取产品，按 rand() 排序

问题描述

我有以下几点:

$products = Mage::getModel('catalog/product')
    ->getCollection()
    ->addAttributeToSort('id', 'RAND()')
    ->addAttributeToSelect('small_image')
    ->addCategoryFilter(Mage::getModel('catalog/category')->load($catId));

但我需要按 id RAND() 订购，我该怎么做?(代码显示了我如何尝试但没有运气)

But I need to order by id RAND(), how can I do this? (The code shows how I've tried with no luck)

推荐答案

Magento 集合不接受选定属性之一以外的参数.在这种情况下，您应该获得 Zend_Db_Select 对象并向其添加订单指令.

Magento collection do not accept parameters other then one of selected attribute. In this case you should get Zend_Db_Select object and add order instruction to it.

$products = Mage::getModel('catalog/product')
    ->getCollection()
    ->addAttributeToSort()
    ->addAttributeToSelect('small_image')
    ->addCategoryFilter(Mage::getModel('catalog/category')->load());
$products->getSelect()->order(new Zend_Db_Expr('RAND()'));

要查看将执行什么查询，您可以使用此构造

To see what query will be executed you may use this construnction

$products->load(true, true); // first parameter show sql query in output, second show sql query in var/log/syslog

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