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Zend Framework 2 Documentation (Manual) | |
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File: /_sources/modules/zend.form.element.range.txt
Size: | 2615 |
Storage flags: | no_autoload,compress/gzip (41%) |
:orphan:
.. _zend.form.element.range:
Range
^^^^^
``Zend\Form\Element\Range`` is meant to be paired with the ``Zend\Form\View\Helper\FormRange`` for `HTML5 inputs with
type range`_. This element adds filters and validators to it's input filter specification in order to validate
HTML5 range values on the server.
.. _zend.form.element.range.usage:
.. rubric:: Basic Usage
This element automatically adds a ``"type"`` attribute of value ``"range"``.
.. code-block:: php
:linenos:
use Zend\Form\Element;
use Zend\Form\Form;
$range = new Element\Range('range');
$range
->setLabel('Minimum and Maximum Amount')
->setAttributes(array(
'min' => '0', // default minimum is 0
'max' => '100', // default maximum is 100
'step' => '1', // default interval is 1
));
$form = new Form('my-form');
$form->add($range);
Here is with the array notation:
.. code-block:: php
:linenos:
use Zend\Form\Form;
$form = new Form('my-form');
$form->add(array(
'type' => 'Zend\Form\Element\Range',
'name' => 'range',
'options' => array(
'label' => 'Minimum and Maximum Amount'
),
'attributes' => array(
'min' => 0, // default minimum is 0
'max' => 100, // default maximum is 100
'step' => 1 // default interval is 1
)
));
.. note::
Note: the ``min``, ``max``, and ``step`` attributes should be set prior to calling Zend\\Form::prepare().
Otherwise, the default input specification for the element may not contain the correct validation rules.
.. _zend.form.element.range.methods:
.. rubric:: Public Methods
The following methods are in addition to the inherited :ref:`methods of Zend\\Form\\Element\\Number
<zend.form.element.number.methods>`.
.. function:: getInputSpecification()
:noindex:
Returns a input filter specification, which includes ``Zend\Filter\StringTrim`` and will add the appropriate
validators based on the values from the ``min``, ``max``, and ``step`` attributes. See
:ref:`getInputSpecification in Zend\\Form\\Element\\Number
<zend.form.element.number.methods.get-input-specification>` for more information.
The ``Range`` element differs from ``Zend\Form\Element\Number`` in that the ``Zend\Validator\GreaterThan`` and
``Zend\Validator\LessThan`` validators will always be present. The default minimum is 1, and the default maximum
is 100.
:rtype: array
.. _`HTML5 inputs with type range`: http://www.whatwg.org/specs/web-apps/current-work/multipage/states-of-the-type-attribute.html#range-state-(type=range)
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