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<?php |
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/** |
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* This file is part of slick/form package |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Slick\Form; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Slick\Form\Element\ContainerInterface; |
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use Slick\Form\Element\FieldSet; |
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use Slick\Form\Element\RenderAwareMethods; |
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use Slick\Form\Input\File; |
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use Slick\Form\Renderer\Form as FormRenderer; |
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use Slick\Form\Renderer\RendererInterface; |
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use Slick\Http\PhpEnvironment\Request; |
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/** |
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* HTTP Form |
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* |
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* @package Slick\Form |
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* @author Filipe Silva <[email protected]> |
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*/ |
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class Form extends FieldSet implements FormInterface |
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{ |
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/** |
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* @var string Form id |
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*/ |
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protected $id; |
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/** |
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* Add render capabilities to element |
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*/ |
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use RenderAwareMethods; |
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/** |
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* Creates a form with basic attributes |
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*/ |
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public function __construct() |
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{ |
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parent::__construct(); |
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$this->setAttribute('action', '') |
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->setAttribute('method', 'post'); |
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} |
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/** |
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* @var ServerRequestInterface |
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*/ |
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protected $request; |
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/** |
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* Set data to validate and/or populate elements |
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* |
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* @param array $data |
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* |
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* @return self|$this|FormInterface |
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*/ |
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public function setData($data) |
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{ |
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$this->setValues($data); |
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return $this; |
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} |
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/** |
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* Returns submitted data or current data |
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* |
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* @return array |
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*/ |
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public function getData() |
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{ |
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$data = []; |
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$this->getElementData($this, $data); |
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return $data; |
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} |
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/** |
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* Sets HTTP server request |
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* |
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* The form data should be populated from this requests. |
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* |
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* @param ServerRequestInterface $request |
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* @return self|$this|FormInterface |
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*/ |
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public function setRequest(ServerRequestInterface $request) |
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{ |
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$this->request = $request; |
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return $this; |
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} |
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/** |
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* Recursively collects all posted data |
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* |
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* @param ContainerInterface $container |
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* @param array $data |
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*/ |
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protected function getElementData( |
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ContainerInterface $container, &$data = [] |
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) { |
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foreach ($container as $element) { |
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if ($element instanceof InputInterface) { |
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$data[$element->getName()] = $element->getValue(); |
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continue; |
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} |
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if ($element instanceof ContainerInterface) { |
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$this->getElementData($element, $data); |
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continue; |
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} |
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} |
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} |
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/** |
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* Gets the HTML renderer for this element |
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* |
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* @return RendererInterface |
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*/ |
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protected function getRenderer() |
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{ |
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return new FormRenderer($this); |
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} |
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/** |
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* Gets the form id |
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* |
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* @return string |
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*/ |
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public function getId() |
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{ |
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return $this->id; |
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} |
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/** |
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* Sets internal form ID |
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* |
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* @param string $formId |
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* |
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* @return self|$this|FormInterface |
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*/ |
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public function setId($formId) |
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{ |
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$this->id = $formId; |
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return $this; |
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} |
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/** |
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* Adds an element to the container |
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* |
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* @param ElementInterface $element |
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* |
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* @return self|$this|ContainerInterface |
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*/ |
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public function add(ElementInterface $element) |
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{ |
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if ($element instanceof File) { |
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$this->setAttribute('enctype', 'multipart/form-data'); |
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} |
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return parent::add($element); |
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} |
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/** |
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* Check if for was submitted or not |
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* |
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* @return boolean |
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*/ |
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public function wasSubmitted() |
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{ |
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$formMethod = strtoupper($this->getAttribute('method', 'post')); |
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$formId = $this->getRequest()->getPost('form-id', false); |
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$formId = $formId |
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? $formId |
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: $this->getRequest()->getQuery('form-id', null); |
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$submitted = $this->request->getMethod() == $formMethod && |
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$formId == $this->getId(); |
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if ($submitted) { |
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$this->updateValuesFromRequest(); |
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} |
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return $submitted; |
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} |
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/** |
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* Gets the HTTP request |
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* |
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* @return ServerRequestInterface|Request |
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*/ |
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public function getRequest() |
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{ |
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if (null == $this->request) { |
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$this->request = new Request(); |
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} |
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return $this->request; |
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} |
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/** |
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* Assign form values from request |
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*/ |
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protected function updateValuesFromRequest() |
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{ |
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$data = $this->getRequest()->isPost() |
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? $this->getRequest()->getPost() |
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: $this->getRequest()->getQuery(); |
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if (isset($_FILES)) { |
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$data = array_merge($data, $this->request->getUploadedFiles()); |
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} |
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$this->setValues($data); |
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} |
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} |
Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: