Magento有条件的addFieldToFilter

Question

我想在集合中创建一个IF CONDITION。如果$mtype不为空，则此条件工作addFieldToFilter('main_table.m_type', $mtype)，如果条件不匹配，则此过滤器将不起作用。

$collection = Mage::getModel('manufacturers/manufacturers')->getCollection() 
           ->addStoreFilter(Mage::app()->getStore(true)->getId()) 
           ->addFieldToFilter('main_table.status', 1) 
           ->addFieldToFilter('main_table.m_type', $mtype) 
           ->addOrder(Mage::helper('manufacturers')->getManufacturerSort(), Mage::helper('manufacturers')->getManufacturerOrder()) 
          ->getData(); 

我希望你们的人知道这个问题的答案，否则你会指导我一个更好的办法。

感谢， 哈南阿里

Answer 1

$collection = Mage::getModel('manufacturers/manufacturers')->getCollection() 
    ->addStoreFilter(Mage::app()->getStore(true)->getId()) 
    ->addFieldToFilter('main_table.status', 1) 
    ->addOrder(Mage::helper('manufacturers')->getManufacturerSort(), Mage::helper('manufacturers')->getManufacturerOrder()); 

if (!empty($mtype)) { 
    $collection->addFieldToFilter('main_table.m_type', $mtype); 
} 

$data = $collection->getData();