在Zend HeadScript View Helper中修改堆栈 [英] Modify Stack in the Zend HeadScript View Helper

问题描述

我正在尝试解决此问题从完全不同的角度来看，因为看起来我无法那样实现目标.

I am trying to attack this problem from a completely different angle, because it doesn't look like I can achieve my goal that way.

我想遍历 HeadScript View Helper ，然后对其进行修改. 文档为此，以及其他一些视图助手做出了这样的声明:

I want to loop over the item stack in the HeadScript View Helper, and make modifications to it. The documentation for this and some of the other view helpers makes this statement:

HeadScript覆盖了每个append()， offsetSet()，prepend()和set()为 强制使用特殊方法 如上所述.在内部，它存储 每个项目都作为stdClass令牌， 稍后使用 itemToString()方法.这允许 您对其中的项目进行检查 堆栈，并有选择地修改这些 只需修改对象即可 返回.

HeadScript overrides each of append(), offsetSet(), prepend(), and set() to enforce usage of the special methods as listed above. Internally, it stores each item as a stdClass token, which it later serializes using the itemToString() method. This allows you to perform checks on the items in the stack, and optionally modify these items by simply modifying the object returned.

那么，这个对象返回"在哪里?我在这里错过了一个难题.

So, where is this "object returned"? I am missing a piece of the puzzle here.

感谢您的帮助！

推荐答案

在Zend_View_Helper_HeadScript的toString()方法中，我注意到了$this上的foreach()循环，所以我尝试了一下，并且它起作用了.这是我编写的HeadScript扩展，用于说明解决方案:

In the toString() method of Zend_View_Helper_HeadScript I noticed a foreach() loop on $this, so I tried that and it worked. Here's a HeadScript extension I wrote that illustrates the solution:

class My_View_Helper_HeadScript extends Zend_View_Helper_HeadScript
{
    public function toString($indent = null)
    {
        $files = array();
        foreach ($this as $key => $item) {
            if (!empty($item->attributes)
                    && array_key_exists('src', $item->attributes)
                    && ('scripts' == substr($item->attributes['src'], 1, 7))) {
                $files[] = $item->attributes['src'];
                unset($this[$key]);
            }
        }
        if (0 < count($files)) {
            $this->prependFile('/combo.php?type=scripts&files=' . implode(',', $files));
        }
        return parent::toString($indent);
    }
}

在Bootstrap.php中，以下几行指向我的助手:

In Bootstrap.php the following lines to point to my helpers:

$this->bootstrap('view');
$view = $this->getResource('view');
$view->addHelperPath('My/View/Helper', 'My_View_Helper');

在我的布局中，我有这行:

In my layout, I have this line:

<?php echo $this->headScript(); ?>

---

如果我的解决方案仍然不清楚，请告诉我，我将对其进行更新以澄清问题.

---

If my solution is unclear in any way, let me know and I'll update it to clarify.

这篇关于在Zend HeadScript View Helper中修改堆栈的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！