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My_Form_Renderer_Edit.php
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My_Form_Renderer_Edit.php
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<?php
require_once('My_LanguagePack.php');
require_once('Zend/View.php');
require_once('My_Decorator_Errors.php');
require_once('Zend/Form/Decorator/HtmlTag.php');
require_once('Zend/Form/Decorator/Description.php');
class My_Form_Renderer_Edit
{
/**
* Form instance
* @var Zend_Form
*/
protected $form;
/**
* Language pack (demonstration purposes only, could be antything)
* @var My_LanguagePack
*/
protected $lang;
/**
* Constructor requiring Zend_Form instance to be rendered
* @param Zend_Form $form
*/
public function __construct(Zend_Form $form, $form_id = null)
{
// create view and specify doctype to have self-closing tags.
$view = new Zend_View();
$view->doctype('XHTML1_TRANSITIONAL');
$this->form = $form;
$this->form->setView(new Zend_View());
$this->form->setAttrib('class', 'form_edit');
if (!is_null($form_id)) {
$this->form->setAttrib('id', $form_id);
}
// Zend_Translate could be an option but the scope is a situation
// where allready other internationalisation systems exist
$this->lang = new My_LanguagePack();
}
/**
* Setup decorators and properties and return render output
*
* @return string
*/
public function render()
{
$this->addElements();
$this->setupElementsCommon();
$this->setupElementsUnique();
$this->setupForm();
return $this->form->render();
}
/**
* Add submit button
*/
protected function addElements() {
$this->form->addElement('submit','submit', array(
'label'=>'Send',
));
}
/**
* Setup decorators and properties common for all elements
*/
protected function setupElementsCommon()
{
$this->form->setElementDecorators(array(
'ViewHelper',
array('Description', array(
'placement' => 'append',
'tag' => 'span',
'class' => 'description'
)),
));
}
/**
* Iterate over elements and hand over to
*/
protected function setupElementsUnique()
{
foreach($this->form->getElements() as $elmKey => $elm) {
$this->setupSingleElement($elm);
}
}
/**
* Setup per-element properties like labels, and classes
*/
protected function setupSingleElement(Zend_Form_Element $elm) {
// determine if this element has an error. (Will be used below)
$elmHasError = (count($elm->getMessages()) > 0);
// set element values from the language pack
$elm->setLabel($this->lang->get('form.label.' . $elm->getName()));
// display info about required length if validator exists
if ($elm->getValidator('StringLength')) {
$elm->setDescription(sprintf($this->lang->get('form.description.' . $elm->getName()),
$elm->getValidator('StringLength')->getMin(),
$elm->getValidator('StringLength')->getMax()
));
} else {
$elm->setDescription($this->lang->get('form.description.' . $elm->getName()));
}
// Duplicating type attr to classname in case we need to support IE6
// and want to be able to directly target the element without using
// input[type=text]
$zendType = $elm->getType();
$className = strtolower(
substr($zendType, strrpos($zendType, '_') + 1)
);
$elm->setAttrib('class', $className);
// wrap this stuff up in a html div with class 'element'
$elm->addDecorator('HtmlTag',array('tag'=>'div', 'class'=>'element'));
// determine if element has error and use that to determine prefix char.
// 1. There seems to be no way to add html to the reqPrefix
// 2. There seems to be no way to add a custom classname to the div tag
if ($elm->getName() != 'submit' ) {
$reqChar = $elmHasError ? '! ' : '* ';
$elm->addDecorator('Label', array(
'placement' => 'prepend',
'tag' => 'div',
'requiredPrefix' => $reqChar
));
}
// use custom error decorator that attempts to replace default error
// messages by the ones supplied by My_LanguagaPack
$errorDecorator = new My_Decorator_Errors();
$errorDecorator->setLanguagePack($this->lang);
$elm->addDecorator($errorDecorator);
// wrap everything so far in a li tag, give it class error if elm has error
// ATT: using array to create alias for allready used HtmlTag decorator
$liClass = $elmHasError ? 'error' : '';
$elm->addDecorator(
array('outerLi' => 'HtmlTag'),
array('tag' => 'li', 'class' => $liClass)
);
}
/**
* Set form decorators. basically replacing the default <dl> with a <ul>
*/
protected function setupForm()
{
// remove default decorators and add own
$this->form->clearDecorators();
$this->form->addDecorator('FormElements');
$this->form->addDecorator('HtmlTag', array('tag' => 'ul'));
$this->form->addDecorator('Form');
}
}