Zend Framework: How do I remove the decorators on a Zend Form Hidden Element?

Question

I'm trying to remove the default decorators on a hidden form element. By default, the hidden element is displayed like this:

<dt>Hidden Element Label (if I had set one)</dt>
<dd><input type="hidden" name="foobar" value="1" id="foobar"></dd>

I don't want my hidden element to take up space on my page. I want to remove all the default decorators so all I'm left with is the input tag.

<input type="hidden" name="foobar" value="1" id="foobar">

How can I achieve this?

Seaman

Same question: #376688 – Startling

It's actually a different question, but it's very similar. – Seaman

Read the actual question - it's the same. – Startling

removing all and removing one decorator may be the same if all you have is one decorator, but it's not the same if you have more than one. – Soiree

Answered this question here – Thad

Answer 1

For hidden field you need only one decorator - ViewHelper:

$field = new Zend_Form_Element_Hidden('id');
$field->setDecorators(array('ViewHelper'));

This will render only the input field, without Dt-Dd wrapper and label.

Savagism

Answer 2

From the Zend Element Decorators documentation:

Default Decorators Do Not Need to Be Loaded

By default, the default decorators are loaded during object initialization. You can disable this by passing the 'disableLoadDefaultDecorators' option to the constructor:

$element = new Zend_Form_Element('foo', 
    array('disableLoadDefaultDecorators' => true)
);

Odds

Handy! I used it like $this->addElement('hidden','article_id', array('disableLoadDefaultDecorators' => true)); that in my init method. – Retail

Using this solution, the <input type="hidden"> field does not display at all for me. – Francesco

Answer 3

I use this

$element->removeDecorator('DtDdWrapper');

to get rid of the dt dd tags around specific elements

Homogamy

Answer 4

// based on above - a simple function to add a hidden element to $this form

/**
 * Add Hidden Element
 * @param $field
 * @param value
 * @return nothing - adds hidden element
 * */
public function addHid($field, $value){     
    $hiddenIdField = new Zend_Form_Element_Hidden($field);
    $hiddenIdField->setValue($value)
          ->removeDecorator('label')
          ->removeDecorator('HtmlTag');     
    $this->addElement($hiddenIdField);
}

Oldtimer

Answer 5

When you have a lot of hidden inputs best answer is the following:

$elements = $this->getElements();
foreach ($elements as $elem)
    if ($elem instanceof Zend_Form_Element_Hidden)
        $elem->removeDecorator('label')->removeDecorator('HtmlTag');

Unsnap

Answer 6

As mentioned in other posts setDisableLoadDefaultDecorators(true) doesn't work if they're already loaded... BUT clearDecorators() does!

Peri

Answer 7

I couldn't get disableLoadDefaultDecorators to work quite right. Here's a solution I came up with.

$hiddenIdField = new Zend_Form_Element_Hidden('id');
$hiddenIdField->setValue($portalId)
              ->removeDecorator('label')
              ->removeDecorator('HtmlTag'); 

In the HTML, the hidden field appears without any extra tags around it.

...
<dt><label for="password" class="required">Password</label></dt>
<dd><input type="password" name="password" id="password" value="" /></dd>
<input type="hidden" name="id" value="1" id="id" />
...

Seaman

the problem with this approach is that it is not xhtml compliant – Seaman

Answer 8

here is what takeme2web from http://www.phpfreaks.com/forums/index.php?topic=225848.0 suggests

$yourhiddenzendformelement->setDecorators(array('ViewHelper'));

Animalism

Answer 9

Using only a single "ViewHelper" decorator will generate invalid markup if you're still using the <dl> wrapper. Another approach is outlined in ZF-2718. This adds hidden fields to a subform that is wrapped in a <dd>.

Sympathy

Answer 10

Well, 2012 and still the same issue. If you remove the decorators, the html won't validate. If you leave them, the hidden elements take up space. In all of my projects I have a CSS helper .hidden, so I just apply it to the <dd> and unset the label:

$element = new Zend_Form_Element_Hidden('foo', array('value' => 'bar'));
$element->removeDecorator('Label');
$element->getDecorator('HtmlTag')->setOption('class', 'hidden');

Valid html(5), nice looking forms. This can also go into a custom decorator for the hidden fields.

EDIT

This is how I put it into my own form element:

class Exanto_Form_Element_Hidden extends Zend_Form_Element_Hidden
{
    public function render(Zend_View_Interface $view = null)
    {
        $this->removeDecorator('Label');
        $this->getDecorator('HtmlTag')->setOption('class', 'hidden');
        return parent::render($view);
    }
}

Dna

Answer 11

Use this:

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

        $decorator = $element->getDecorator('label');
        if (!$decorator) {
            continue;
        }
        $decorator->removeOption('tag');
    }

Nordrheinwestfalen