问题描述

尝试刷新 opencart 中的修改缓存缓存，从那以后我在前端收到一个空白页面，并显示此错误消息.

Hi tried refreshing the modification cache cache in opencart and since then i am getting a blank page in front end with this error message.

public function trigger($event, array $args = array()) {
        foreach ($this->data as $value) {
            if (preg_match('/^' . str_replace(array('*', '?'), array('.*', '.'), preg_quote($value['trigger'], '/')) . '/', $event)) {
                $result = $value['action']->execute($this->registry, $args);

            if (!is_null($result) && !($result instanceof Exception)) {
                return $result;
            }
        }
    }
}

谢谢，

推荐答案

您的 OC 版本似乎是 3.0.2.x 或更高版本.

It seems your have an OC version 3.0.2.x or above.

在事件类的 $this->data 中，您注册了一个缺少操作参数的事件.

In your $this->data of the Event Class, you have an event registered that is missing an action parameter.

$this->data[] = array(
    'trigger'  => $trigger,
    'action'   => $action, // <-- this must be an Action Object with a method execute()
    'priority' => $priority
);

所有事件都通过 register() 方法注册，该方法明确请求将 Action 对象作为参数传递.

All events are registered via the register() method which explicitly requests that an Action object is being passed as a parameter.

由于错误指向调用未定义的方法 Action::execute()"，我可以假设，您的操作类有问题.

Since the error is pointing to "Call to undefined method Action::execute()", I can assume, you have an issue with the action class.

您很可能需要检查 system/storage/modifications 中 system/engine/action.php 文件的修改.

Most likely you need to check the Modifications of the system/engine/action.php file in your system/storage/modifications.

可能是方法 execute() 丢失或以某种方式损坏.

It could be that the method execute() is either missing or somehow corrupt.

尝试对 $value 进行 var_dump 以查看其中的内容:

try to var_dump the $value to see what is there:

public function trigger($event, array $args = array()) {
        foreach ($this->data as $value) {
//log out the $value before the error to see if the Action object is actually there and see what trigger causes this.
var_dump($value);
            if (preg_match('/^' . str_replace(array('*', '?'), array('.*', '.'), preg_quote($value['trigger'], '/')) . '/', $event)) {
                $result = $value['action']->execute($this->registry, $args);

            if (!is_null($result) && !($result instanceof Exception)) {
                return $result;
            }
        }
    }
}

希望能帮到你

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