Zend_Form with xthml scripts (without using decora

问题:

(I follow this post to got the logic how to use Zend_Form without using decorators.)

within the action I create Zend_Form object and assigned the form to the view before rendering it:

public function indexAction()
{
        $form = new Zend_Form();
        $form->setAction('process')
            ->setMethod('post');

        $username = $form->createElement('text','username');
        $username->addValidator('alnum')
        ->setRequired(true)
        ->addFilter('StringtoLower');

        $description = $form->createElement('textarea','description');
        $description->addValidator('alnum')
                    ->setRequired(false)
                    ->addFilter('StringtoLower');

        $submit = $form->createElement('submit','Submit');

        $form->addElement($username);
        $form->addElement($description);
        $form->addElement($submit);

        $this->view->form = $form;
        $this->view->render('myForm/index.phtml'); //myForm is the actionController

    }

Then I add following code to it's view script (index.phtml)

<form>
    <table>
        <tr>
            <td><label>Username</label></td>
            <td><?php echo $this->form->getElement('username')->renderElement(); ?></td>
        </tr>
        <tr>
            <td><label>Description</label></td>
            <td><?php echo $this->form->getElement('description')->renderElement(); ?></td>
        </tr>
        <tr>
            <td></td>
            <td><?php echo $this->form->getElement('submit')->renderElement(); ?></td>
        </tr>
    </table>
</form>

But it's get an error

Message: Decorator by name Element does not exist

I didn't use decorators,What is the problem of my code.

This is the complete custom error message

Application error
Exception information:

Message: Decorator by name Element does not exist
Stack trace:

#0 [internal function]: Zend_Form_Element->__call('renderElement', Array)
#1 C:\Program Files\Zend\Apache2\htdocs\Demo1\application\views\scripts\myForm\index.phtml(5): Zend_Form_Element_Text->renderElement()

#2 C:\Program Files\Zend\Apache2\htdocs\Demo1\library\Zend\View.php(108): include('C:\Program File...')
#3 C:\Program Files\Zend\Apache2\htdocs\Demo1\library\Zend\View\Abstract.php(833): Zend_View->_run('C:\Program File...')

#4 C:\Program Files\Zend\Apache2\htdocs\Demo1\application\controllers\MyFormController.php(38): Zend_View_Abstract->render('myForm/index.p...')
#5 C:\Program Files\Zend\Apache2\htdocs\Demo1\library\Zend\Controller\Action.php(513): myFormController->indexAction()

#6 C:\Program Files\Zend\Apache2\htdocs\Demo1\library\Zend\Controller\Dispatcher\Standard.php(289): Zend_Controller_Action->dispatch('indexAction')
#7 C:\Program Files\Zend\Apache2\htdocs\Demo1\library\Zend\Controller\Front.php(946): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))

#8 C:\Program Files\Zend\Apache2\htdocs\Demo1\library\Zend\Application\Bootstrap\Bootstrap.php(77): Zend_Controller_Front->dispatch()
#9 C:\Program Files\Zend\Apache2\htdocs\Demo1\library\Zend\Application.php(335): Zend_Application_Bootstrap_Bootstrap->run()

#10 C:\Program Files\Zend\Apache2\htdocs\Demo1\public\index.php(27): Zend_Application->run()
#11 {main} 

How I solve this problem without using decorators

回答1:

You actually need to remove the default decorators, and add the ViewScript Decorator (along maybe the Error Decorator) and then render it, take a look at this article.

Simple example:

class Demo_Form extends Zend_Form {
public function init() {
    $this->addElement('text', 'username', array( 'decorators' => array( 'ViewHeper', 'Errors' ) ));
    $this->addElement('text', 'lastname', array( 'decorators' => array( 'ViewHeper', 'Errors' ) ));
    $this->setDecorators(array( array('ViewScript' => array( 'script' => 'demoForm.phtml'))));
}
}

And with a view script (demoForm.phtml):

<form action="<?php echo $this->escape($this->form->getAction() ?>" method="<?php echo $this->escape($this->form->getMethod() ?>">
<table>
    <tr>
        <td>User Name:</td>
        <td><?php echo $this->form->username; ?></td>
    </tr>
    <tr>
        <td>Last Name:</td>
        <td><?php echo $this->form->lastname; ?></td>
    </tr>
</table>
</form>

You can have complete control of how and where to render your elements, then on your final view (the one from the controller) just print your form the same: form; ?> to render the viewScript onto your View.

回答2:

function indexAction () {

$form = new Zend_form();

..... $this->view->form = $form;

}

after this step, just go to path/to/index.phtml and

<%php echo $this->form;

Hope this works for you, it's the same way I go for it!

回答3:

Since version 1.7 you can render individual form element decorators:

echo $form->forename->renderLabel();

or

echo $form->forename->renderErrors();

I think your code is trying to find a decorator named element, but not succeeding.

You can render 'elements' like this:

echo $form->forename->render($view);

Having said that, I don't think that is what you want. As you'll get the default attached decorators.

You probably wanted:

echo $form->forename->renderViewHelper()