How does Zend View use view helpers?

最新推荐文章于 2020-07-08 13:02:58 发布

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本文详细介绍了如何在视图脚本中调用助手法，通过内部加载类实例并调用方法，实现代码复用和提高开发效率。了解如何在视图中使用插件加载器来加载和调用助手法。

To use a helper in your view script, call it using $this->helperName(). Behind the scenes, Zend_View will load the Zend_View_Helper_HelperName class, create an object instance of it, and call its helperName() method. The object instance is persistent within the Zend_View instance, and is reused for all future calls to $this->helperName().

public function __call($name, $args)
    {
        // is the helper already loaded?
        $helper = $this->getHelper($name);

        // call the helper method
        return call_user_func_array(
            array($helper, $name),
            $args
        );
    }

From above code snippets, we know that view uses plugin loader to load helper by name, then call the helper's method.