使用redis ruby gem，如何从redis中清除一组与模式匹配的键？(Using the redis ruby gem, how do I clear a set of keys from redis matching a pattern?)

 如上一个答案所示，您可以使用GroupedFor ViewHelper来实现此目的。 但是使用它将是流体模板中的许多逻辑，这就是为什么应该在控制器，模型或存储库中完成的原因。 
 
 示例：将Getter添加到对象模型 
 
/**
 * @return int
 */
public function getSoldItems() {
    $soldCount = 0;
    foreach($this->getItems() as $item) {
        // 0 = sold
        if($item->getStatus()===0) {
            $soldCount++;
        }
    }
    return $soldCount;
}
 
 在流体中，您可以使用{object.soldItems}调用Getter 
 
 一个更好的性能解决方案，特别是对于延迟加载子对象，将使用存储库进行计数。 为此，您必须在存储库中创建一个函数并在Getter-Function中调用它。 要使用公共存储库方法来创建查询，您需要对对象的项目“反向”。 否则，您必须自己使用“statement（）”编写查询。 

As indicated in the previous answer, you can use the GroupedFor ViewHelper for this purpose. But using it would be to much logic inside the fluid template thats the reason why this should be done in the controller, model or repository.
 
Example: Adding a Getter to the Object-Model
 
/**
 * @return int
 */
public function getSoldItems() {
    $soldCount = 0;
    foreach($this->getItems() as $item) {
        // 0 = sold
        if($item->getStatus()===0) {
            $soldCount++;
        }
    }
    return $soldCount;
}
 
In fluid you can call the Getter with {object.soldItems}
 
A better performance solution especially with lazy loading subobjects would be counting with the repository. For this you have to create a function in the repository and call it inside the Getter-Function. To use common repository methods for creating the query, you need a "Backrelation" of items to the object. Otherwise you have to write the query with "statement()" on your own.