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111 lines
3.4 KiB
PHP
111 lines
3.4 KiB
PHP
<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\widgets;
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use Yii;
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use yii\base\InvalidConfigException;
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use yii\base\Model;
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use yii\base\Widget;
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use yii\helpers\Html;
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/**
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* InputWidget is the base class for widgets that collect user inputs.
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*
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* An input widget can be associated with a data [[model]] and an [[attribute]],
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* or a [[name]] and a [[value]]. If the former, the name and the value will
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* be generated automatically (subclasses may call [[renderInputHtml()]] to follow this behavior).
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*
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* Classes extending from this widget can be used in an [[\yii\widgets\ActiveForm|ActiveForm]]
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* using the [[\yii\widgets\ActiveField::widget()|widget()]] method, for example like this:
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*
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* ```php
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* <?= $form->field($model, 'from_date')->widget('WidgetClassName', [
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* // configure additional widget properties here
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* ]) ?>
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* ```
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*
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* For more details and usage information on InputWidget, see the [guide article on forms](guide:input-forms).
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @since 2.0
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*/
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class InputWidget extends Widget
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{
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/**
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* @var \yii\widgets\ActiveField active input field, which triggers this widget rendering.
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* This field will be automatically filled up in case widget instance is created via [[\yii\widgets\ActiveField::widget()]].
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* @since 2.0.11
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*/
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public $field;
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/**
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* @var Model the data model that this widget is associated with.
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*/
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public $model;
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/**
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* @var string the model attribute that this widget is associated with.
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*/
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public $attribute;
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/**
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* @var string the input name. This must be set if [[model]] and [[attribute]] are not set.
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*/
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public $name;
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/**
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* @var string the input value.
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*/
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public $value;
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/**
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* @var array the HTML attributes for the input tag.
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* @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
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*/
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public $options = [];
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/**
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* Initializes the widget.
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* If you override this method, make sure you call the parent implementation first.
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*/
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public function init()
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{
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if ($this->name === null && !$this->hasModel()) {
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throw new InvalidConfigException("Either 'name', or 'model' and 'attribute' properties must be specified.");
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}
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if (!isset($this->options['id'])) {
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$this->options['id'] = $this->hasModel() ? Html::getInputId($this->model, $this->attribute) : $this->getId();
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}
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parent::init();
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}
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/**
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* @return bool whether this widget is associated with a data model.
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*/
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protected function hasModel()
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{
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return $this->model instanceof Model && $this->attribute !== null;
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}
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/**
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* Render a HTML input tag.
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*
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* This will call [[Html::activeInput()]] if the input widget is [[hasModel()|tied to a model]],
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* or [[Html::input()]] if not.
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*
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* @param string $type the type of the input to create.
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* @return string the HTML of the input field.
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* @since 2.0.13
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* @see Html::activeInput()
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* @see Html::input()
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*/
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protected function renderInputHtml($type)
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{
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if ($this->hasModel()) {
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return Html::activeInput($type, $this->model, $this->attribute, $this->options);
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}
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return Html::input($type, $this->name, $this->value, $this->options);
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}
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}
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