Zend Form Decorator, parte II

Anteriormente en la primera parte de Zend Form Decorators vimos como cambiar los Decorators directamente sobre el Zend Form.
Ahora vamos a ver como aplicar nuestros propios decorators en todos los formularios de una estacada.

class ZendY_Form extends Zend_Form{

    protected static $_standardElementDecorator   = array(
        array('ViewHelper'),
        array('Label',         array('separator' => ' ', )),
        array('Description',    array('tag' => 'span', 'class' => 'element-description-append', 'placement' => 'append' )),
        array('Errors'),
        array('HtmlTag',     array('tag' => 'div')),
    );  

    protected static $_standardElementDecoratorAppendDescription = array(
        array('Description',    array('tag' => 'span', 'class' => 'element-description-prepend', 'placement' => 'prepend' )),
        array('ViewHelper'),
        array('Label',         array('separator' => ' ', )),
        array('Errors'),
        array('HtmlTag',     array('tag' => 'div')),
    );

    protected static $_standardElementDecoratorClearRight   = array(
        array('ViewHelper'),
        array('Label',         array('separator' => ' ', )),
        array('Description',    array('tag' => 'span', 'class' => 'element-description-append', 'placement' => 'append' )),
        array('Errors'),
        array('HtmlTag',     array('tag' => 'div', 'class' => 'clearRight')),
    ); 

    protected static $_standardElementDecoratorClearLeft   = array(
        array('ViewHelper'),
        array('Label',         array('separator' => ' ', )),
        array('Description',    array('tag' => 'span', 'class' => 'element-description-append', 'placement' => 'append' )),
        array('Errors'),
        array('HtmlTag',     array('tag' => 'div', 'class' => 'clearLeft')),
    ); 

    /**
     *
     * Remeber to set 'separator' => '' into the element
     * @var array
     */
    protected static $_multiCheckboxElementDecorator = array(

        array('ViewHelper'),
        array('Label',         array('separator' => ' ', 'tag' => 'span')),
        array('Description',    array('tag' => 'span', 'class' => 'element-description-append', 'placement' => 'append' )),
        array('Errors'),
        array('HtmlTag',     array('tag' => 'div', 'class' => 'multiCheckbox')),

    );

    protected static $_hiddenElementDecorator = array(
        array('ViewHelper')
    );

    protected static $_submitElementDecorator = array(
        array('ViewHelper'),
        array('HtmlTag',         array('tag' => 'p', 'class' => 'element-submit')),
    );

    public function __construct($options = null)
    {
        parent::__construct($options);

    //$this->addElementPrefixPath('ZendY_Form_Decorator','ZendY/Form/Decorator','decorator');
    }

    /**
     * Load the default decorators
     *
     * @return void
     */
    public function loadDefaultDecorators(){

        if (!$this->loadDefaultDecoratorsIsDisabled()) {

            //$this->removeDecorator('DtDdWrapper');
            //$this->removeDecorator('DlWrapper'); 

            $this->clearDecorators()
                ->setAttrib('accept-charset', 'UTF-8')
                ->addDecorator('FormElements')
                ->addDecorator('HtmlTag', array('tag' => '
', 'class' => 'zendy_formContent'))
                ->addDecorator('Form')
                ->setAttrib('class', 'zendy_form')
            ;
        } 

        foreach ($this->getDisplayGroups() as $group){

            if($group->loadDefaultDecoratorsIsDisabled()) continue;

            $group->clearDecorators();

            $group->addDecorators(
                array(
                    array('FormElements'),
                    array('Description', array('tag' => 'p', 'class' => 'group-description', 'placement' => 'prepend' )),
                    new Zend_Form_Decorator_Fieldset(),
                )
            );
        }

        foreach ($this->getElements() as $element) {

            if($element->loadDefaultDecoratorsIsDisabled()) continue;

            switch ($element->getType()){

                case 'Zend_Form_Element_Hidden':      $element->setDecorators(self::$_hiddenElementDecorator);        break;
                case 'Zend_Form_Element_Submit':      $element->setDecorators(self::$_submitElementDecorator);        break;
                case 'Zend_Form_Element_Radio':
                case 'Zend_Form_Element_MultiCheckbox': $element->setDecorators(self::$_multiCheckboxElementDecorator); break;
                case 'Zend_Form_Element_Select':
                case 'Zend_Form_Element_Text':
                default:                                $element->setDecorators(self::$_standardElementDecorator);
            }
        }

        return $this;
    }
}

Se trata de crear una clase que extienda Zend Form en la que definimos nuestros Decorators, tambien se podria crear una clase para cada decorator, pero eso lo dejo para otra entrada.

Una vez definidos los Decorators para Elementos y DisplayGroups los llamamos en el metodo loadDefaultDecorators.

Ahora cuando creamos un formulario extenderemos de ZendY_Form y se aplicaran los Decorators que hemos definido.

A de más si queremos que algun elemento tenga un decorator diferente podemos ahcer lo siguiente:

$this->addElement('text', 'validAtTo', array(
            'label'     => 'To',
            'required'  => false,
            'class'     => 'date',
            'value'     => '',
            'disableLoadDefaultDecorators' => true,
            'decorators' => parent::$_standardElementDecoratorClearLeft
        ));

De esta forma, desactivamos los Decorators por defecto y cargamos otros que previamente hemos definido en nuestro clase ZendY_Form

Espero que os sea útil