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<?php |
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namespace mindplay\kissform\Fields; |
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use mindplay\kissform\Field; |
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use mindplay\kissform\InputModel; |
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use mindplay\kissform\InputRenderer; |
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use mindplay\kissform\Validators\CheckSelected; |
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/** |
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* This class provides information about a <select> input and available options. |
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*/ |
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class SelectField extends Field |
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{ |
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/** |
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* @var string[] map where option values map to option labels |
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*/ |
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protected $options; |
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/** |
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* @var string label of disabled first option (often directions or a description) |
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*/ |
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public $disabled; |
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/** |
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* @param string $name field name |
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* @param string[] $options map where option values map to option labels |
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*/ |
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public function __construct($name, array $options) |
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{ |
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parent::__construct($name); |
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$this->options = $options; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function createValidators() |
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{ |
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return [new CheckSelected(array_keys($this->options))]; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function renderInput(InputRenderer $renderer, InputModel $model, array $attr) |
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{ |
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$selected = $model->getInput($this); |
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$values = array_map('strval', array_keys($this->options)); |
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if (! in_array($selected, $values, true)) { |
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$selected = null; // selected value isn't present in the list of options |
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} |
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$html = ''; |
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if ($this->disabled !== null) { |
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$html .= '<option' . $renderer->attrs(['disabled' => true, 'selected' => ($selected == '')]) . '>' |
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. $renderer->escape($this->disabled) . '</option>'; |
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} |
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foreach ($this->options as $value => $label) { |
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$equal = is_numeric($selected) |
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? $value == $selected // loose comparison works well for NULLs and numbers |
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: $value === $selected; // strict comparison for everything else |
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$html .= '<option' . $renderer->attrs(['value' => $value, 'selected' => $equal]) . '>' |
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. $renderer->escape($label) . '</option>'; |
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} |
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return $renderer->tag( |
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'select', |
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$renderer->mergeAttrs( |
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[ |
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'name' => $renderer->getName($this), |
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'id' => $renderer->getId($this), |
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'class' => $renderer->input_class, |
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], |
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$attr |
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), |
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$html |
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); |
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} |
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} |
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mindplay-dk /
kissform
