如何在Zend_Form文件元素上使用ViewScripts? [英] How do I use ViewScripts on Zend_Form File Elements?

问题描述

我正在将此ViewScript用于我的标准表单元素:

I am using this ViewScript for my standard form elements:

<div class="field" id="field_<?php echo $this->element->getId(); ?>">
   <?php if (0 < strlen($this->element->getLabel())) : ?>
      <?php echo $this->formLabel($this->element->getName(), $this->element->getLabel());?>
   <?php endif; ?>
   <span class="value"><?php echo $this->{$this->element->helper}(
      $this->element->getName(),
      $this->element->getValue(),
      $this->element->getAttribs()
   ) ?></span>
   <?php if (0 < $this->element->getMessages()->length) : ?>
       <?php echo $this->formErrors($this->element->getMessages()); ?>
   <?php endif; ?>
   <?php if (0 < strlen($this->element->getDescription())) : ?>
      <span class="hint"><?php echo $this->element->getDescription(); ?></span>
   <?php endif; ?>
</div>

尝试单独使用ViewScript会导致错误:

Trying to use that ViewScript alone results in an error:

由表单捕获的异常:无文件 发现装饰器...无法呈现 文件元素

Exception caught by form: No file decorator found... unable to render file element

查看此常见问题解答，发现了我的部分问题，并且我更新了我的问题像这样的表单元素装饰器:

Looking at this FAQ revealed part of my problem, and I updated my form element decorators like this:

'decorators' => array(
   array('File'),
   array('ViewScript', array('viewScript' => 'form/field.phtml'))
)

现在，它两次渲染文件元素，一次在我的视图脚本中，一次在文件元素在我的视图脚本之外的其他元素:

Now it's rendering the file element twice, once within my view script, and extra elements with the file element outside my view script:

<input type="hidden" name="MAX_FILE_SIZE" value="8388608" id="MAX_FILE_SIZE" />
<input type="hidden" name="UPLOAD_IDENTIFIER" value="4b5f7335a55ee" id="progress_key" />
<input type="file" name="upload_file" id="upload_file" />
<div class="field" id="field_upload_file">
    <label for="upload_file">Upload File</label>
    <span class="value"><input type="file" name="upload_file" id="upload_file" /></span>
</div>

关于如何使用ViewScript正确处理此问题的任何想法?

Any ideas on how to handle this properly with a ViewScript?

更新:基于Shaun的解决方案，这是我的最终代码:

UPDATE: Based on Shaun's solution, here's my final code:

表单元素:

$this->addElement('file', 'upload_file', array(
    'disableLoadDefaultDecorators' => true,
    'decorators' => array('File', array('ViewScript', array(
        'viewScript' => '_form/file.phtml',
        'placement' => false,
    ))),
    'label' => 'Upload',
    'required' => false,
    'filters' => array(),
    'validators' => array(array('Count', false, 1),),
));

查看脚本:

<?php
$class .= 'field ' . strtolower(end(explode('_',$this->element->getType())));
if ($this->element->isRequired()) {
    $class .= ' required';
}
if ($this->element->hasErrors()) {
    $class .= ' errors';
}
?>
<div class="<?php echo $class; ?>" id="field_<?php echo $this->element->getId(); ?>">
    <?php if (0 < strlen($this->element->getLabel())): ?>
        <?php echo $this->formLabel($this->element->getFullyQualifiedName(), $this->element->getLabel());?>
    <?php endif; ?>
    <span class="value"><?php echo $this->content; ?></span>
    <?php if ($this->element->hasErrors()): ?>
        <?php echo $this->formErrors($this->element->getMessages()); ?>
    <?php endif; ?>
    <?php if (0 < strlen($this->element->getDescription())): ?>
        <p class="hint"><?php echo $this->element->getDescription(); ?></p>
    <?php endif; ?>
</div>

推荐答案

答案相对简单.您需要做的就是首先指定File装饰器，为文件输入创建一个特定的视图脚本，并为viewScript装饰器参数中的位置指定false，这将有效地将File装饰器的输出注入到viewScript装饰器中，例如

The answer is relatively simple as it happens. All you need do is specify the File decorator first, create a specific view script for the file input and specify false for the placement in the viewScript decorator arguments, this will effectively inject the output from the File decorator into the viewScript decorator e.g.

$element->setDecorators(array('File', array('ViewScript', array('viewScript' => 'decorators/file.phtml', 'placement' => false))));

然后在新的文件元素视图脚本中，您只需在脚本中回显$ this-> content，即可在其中放置文件输入标记.这是一个来自最近项目的示例，因此如果标记看起来有些奇怪，请忽略该标记，希望它能说明这一点.

Then in the new file element view script you simply echo $this->content in the script where you'd like the file input markup to be placed. Here's an example from a recent project, so ignore the markup if it looks a little odd, hopefully it will illustrate the point.

<label for="<?php echo $this->element->getName(); ?>" class="element <?php if ($this->element->hasErrors()): ?> error<?php endif; ?>" id="label_<?php echo $this->element->getName(); ?>"> 
<span><?php echo $this->element->getLabel(); ?></span>

<?php echo $this->content; ?>

<?php if ($this->element->hasErrors()): ?>

    <span class="error">
        <?php echo $this->formErrors($this->element->getMessages()); ?>
    </span>

<?php endif; ?>

</label>

渲染后，您将看到此html元素

When rendered you will see this html for the element

<label for="photo" class="element" id="label_photo"> 
<span>Photo</span>

<input type="hidden" name="MAX_FILE_SIZE" value="6291456" id="MAX_FILE_SIZE">
<input type="file" name="photo" id="photo">

</label>

这篇关于如何在Zend_Form文件元素上使用ViewScripts?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！