我尝试创建一个自定义ViewHelper来集成Dennis D。的代码：
label = '<label ' . $this->_htmlAttribs($label_attribs) . ' for="' . $optId . '">'
. $opt_label
.'</label>';
// Wrap the radios in labels
$radio = '<input type="' . $this->_inputType . '"'
. ' name="' . $name . '"'
. ' id="' . $optId . '"'
. ' value="' . $this->view->escape($opt_value) . '"'
. $checked
. $disabled
. $this->_htmlAttribs($attribs)
. $endTag;
if ('prepend' == $labelPlacement) {
$radio = $label . $radio;
}
elseif ('append' == $labelPlacement) {
$radio .= $label;
}
我的想法是，我想创建具有该结构的单选按钮。
<input type="radio" />
<label>Yes</label>
所以我创建了文件，我称之为FormRadio。路径是：＆＃34; Library / Application / View / Helper / FormRadio.php＆＃34;。 代码：
class Application_View_Helper_FormRadio extends Zend_View_Helper_FormRadio{
protected $_inputType = 'radio';
protected $_isArray = false;
public function formRadio($name, $value = null, $attribs = null,
$options = null, $listsep = "<br />\n")
{
$info = $this->_getInfo($name, $value, $attribs, $options, $listsep);
extract($info); // name, value, attribs, options, listsep, disable
// retrieve attributes for labels (prefixed with 'label_' or 'label')
$label_attribs = array();
foreach ($attribs as $key => $val) {
$tmp = false;
$keyLen = strlen($key);
if ((6 < $keyLen) && (substr($key, 0, 6) == 'label_')) {
$tmp = substr($key, 6);
} elseif ((5 < $keyLen) && (substr($key, 0, 5) == 'label')) {
$tmp = substr($key, 5);
}
if ($tmp) {
// make sure first char is lowercase
$tmp[0] = strtolower($tmp[0]);
$label_attribs[$tmp] = $val;
unset($attribs[$key]);
}
}
$labelPlacement = 'append';
foreach ($label_attribs as $key => $val) {
switch (strtolower($key)) {
case 'placement':
unset($label_attribs[$key]);
$val = strtolower($val);
if (in_array($val, array('prepend', 'append'))) {
$labelPlacement = $val;
}
break;
}
}
// the radio button values and labels
$options = (array) $options;
// build the element
$xhtml = '';
$list = array();
// should the name affect an array collection?
$name = $this->view->escape($name);
if ($this->_isArray && ('[]' != substr($name, -2))) {
$name .= '[]';
}
// ensure value is an array to allow matching multiple times
$value = (array) $value;
// Set up the filter - Alnum + hyphen + underscore
require_once 'Zend/Filter/PregReplace.php';
$pattern = @preg_match('/\pL/u', 'a')
? '/[^\p{L}\p{N}\-\_]/u' // Unicode
: '/[^a-zA-Z0-9\-\_]/'; // No Unicode
$filter = new Zend_Filter_PregReplace($pattern, "");
// add radio buttons to the list.
foreach ($options as $opt_value => $opt_label) {
// Should the label be escaped?
if ($escape) {
$opt_label = $this->view->escape($opt_label);
}
// is it disabled?
$disabled = '';
if (true === $disable) {
$disabled = ' disabled="disabled"';
} elseif (is_array($disable) && in_array($opt_value, $disable)) {
$disabled = ' disabled="disabled"';
}
// is it checked?
$checked = '';
if (in_array($opt_value, $value)) {
$checked = ' checked="checked"';
}
// generate ID
$optId = $id . '-' . $filter->filter($opt_value);
$label = '<label'
. $this->_htmlAttribs($label_attribs) . ' for="' . $optId . '">'
. $opt_label
. '</label>';
$endTag = "/>";
// Create the radio button
$radio = '<input type="' . $this->_inputType . '"'
. ' name="' . $name . '"'
. ' id="' . $optId . '"'
. ' value="' . $this->view->escape($opt_value) . '"'
. $checked
. $disabled
. $this->_htmlAttribs($attribs)
. $endTag;
// Combine the label and the radio button
if ('prepend' == $labelPlacement) {
$radio = $label . $radio;
} else {
$radio = $radio . $label;
}
// add to the array of radio buttons
$list[] = $radio;
}
// XHTML or HTML for standard list separator?
if (!$this->_isXhtml() && false !== strpos($listsep, '<br />')) {
$listsep = str_replace('<br />', '<br>', $listsep);
}
// done!
$xhtml .= implode($listsep, $list);
return $xhtml;
}
}
在表单中我调用了新的ViewHelper：
class Application_Form_Registration extends Zend_Form{
public function init()
{
$radio = new Zend_Form_Element_Radio('two');
$radio->setLabel('Two')->setRequired(true);
$radio->setMultiOptions(array('yes'=>'Yes', 'no'=>'No'))
->addDecorators(array(array('ViewHelper',array('helper' => 'formRadio'))));;
$submit = new Zend_Form_Element_Submit('submit');
$submit->setValue('Submit')
->setAttribs(array('class' => 'btn btn-success btn-lg'));
$this->addElements(array($radio,$submit));
$submit->setDecorators(array('ViewHelper',
array(array('data' => 'HtmlTag'), array('tag' =>'div', 'class'=> 'element')),
array(array('emptyrow' => 'HtmlTag'), array('tag' =>'div', 'class'=> 'element', 'placement' => 'PREPEND')),
array(array('row' => 'HtmlTag'), array('tag' => 'div'))
));
$this->setDecorators(array(
'FormElements',
array('HtmlTag', array('tag' => 'div', 'class' => 'myForm')),
'Form'
));
}
}
但什么都没发生。我哪里错了？提前谢谢。
答案 0 :(得分：2)
我的自定义表单类型有点不同。我没有将装饰器添加到现有的Zend_Form_Element_Radio元素，而是扩展该类并将$_helper设置为我创建的新视图助手。
所以对于你的课程，它可能是这样的：
class Application_Form_Element_NewRadios
extends Zend_Form_Element_Radio
{
$_helper = 'newRadios';
}
问题的根源在于您的视图助手与Zend的结尾具有相同的结尾，框架首先查看Zend。有两个选项，要么告诉表单首先查找您的视图助手，要么给它一个不会与Zend视图助手冲突的新名称。
所以你的视图助手会变成这样：
class Application_View_Helper_NewRadios
extends Zend_View_Helper_FormRadio
{
// .......
}
您可能需要告诉您的表单在哪里查找新的表单元素类，因此在您的Application_Form_Registration::init方法中，您可能需要添加以下内容：
$this->addPrefixPath(
'Application_Form_Element',
'Library/Application/Form/Element',
'element'
);
在您的application.ini文件中，您可能还需要告诉应用程序在哪里查找新的视图助手类。
resources.view.helperPath.Application_View_Helper = Library/Application/View/Helper