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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Form\Widget; |
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use Yiisoft\Arrays\ArrayHelper; |
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use Yiisoft\Html\Html; |
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use Yiisoft\Http\Method; |
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use Yiisoft\Widget\Widget; |
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use function explode; |
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use function implode; |
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use function strcasecmp; |
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use function strpos; |
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use function substr; |
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use function urldecode; |
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/** |
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* A widget for rendering a form |
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*/ |
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final class Form extends Widget |
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{ |
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private string $action = ''; |
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private string $method = Method::POST; |
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private array $options = []; |
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/** |
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* Generates a form start tag. |
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* |
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* @throws \JsonException |
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* |
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* @return string the generated form start tag. |
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* |
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* {@see end())} |
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*/ |
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public function begin(): ?string |
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{ |
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parent::begin(); |
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$hiddenInputs = []; |
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$csrfToken = ArrayHelper::remove($this->options, 'csrf', false); |
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if ($csrfToken && strcasecmp($this->method, Method::POST) === 0) { |
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$hiddenInputs[] = Html::hiddenInput('_csrf', $csrfToken); |
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} |
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if (!strcasecmp($this->method, 'get') && ($pos = strpos($this->action, '?')) !== false) { |
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/** |
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* Query parameters in the action are ignored for GET method we use hidden fields to add them back. |
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*/ |
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foreach (explode('&', substr($this->action, $pos + 1)) as $pair) { |
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if (($pos1 = strpos($pair, '=')) !== false) { |
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$hiddenInputs[] = Html::hiddenInput( |
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urldecode(substr($pair, 0, $pos1)), |
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urldecode(substr($pair, $pos1 + 1)) |
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); |
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} else { |
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$hiddenInputs[] = Html::hiddenInput(urldecode($pair), ''); |
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} |
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} |
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$this->action = substr($this->action, 0, $pos); |
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} |
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$this->options['action'] = $this->action; |
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$this->options['method'] = $this->method; |
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$form = Html::beginTag('form', $this->options); |
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if (!empty($hiddenInputs)) { |
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$form .= "\n" . implode("\n", $hiddenInputs); |
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} |
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return $form; |
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} |
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/** |
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* Generates a form end tag. |
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* |
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* @return string the generated tag. |
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* |
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* {@see beginForm()} |
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*/ |
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public function run(): string |
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{ |
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return '</form>'; |
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} |
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public function action(string $value): self |
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{ |
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$new = clone $this; |
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$new->action = $value; |
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return $new; |
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} |
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public function method(string $value): self |
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{ |
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$new = clone $this; |
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$new->method = $value; |
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return $new; |
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} |
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public function options(array $value = []): self |
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{ |
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$new = clone $this; |
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$new->options = $value; |
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return $new; |
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} |
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} |
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yiisoft /
form
