Yii2 Bootstrap 3
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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\bootstrap;
use yii\helpers\ArrayHelper;
use yii\helpers\Html;
use yii\base\InvalidConfigException;
use Yii;
/**
* A Bootstrap 3 enhanced version of [[yii\widgets\ActiveForm]].
*
* This class mainly adds the [[layout]] property to choose a Bootstrap 3 form layout.
* So for example to render a horizontal form you would:
*
* ```php
* use yii\bootstrap\ActiveForm;
*
* $form = ActiveForm::begin(['layout' => 'horizontal'])
* ```
*
* This will set default values for the [[yii\bootstrap\ActiveField|ActiveField]]
* to render horizontal form fields. In particular the [[yii\bootstrap\ActiveField::template|template]]
* is set to `{label} {beginWrapper} {input} {error} {endWrapper} {hint}` and the
* [[yii\bootstrap\ActiveField::horizontalCssClasses|horizontalCssClasses]] are set to:
*
* ```php
* [
* 'offset' => 'col-sm-offset-3',
* 'label' => 'col-sm-3',
* 'wrapper' => 'col-sm-6',
* 'error' => '',
* 'hint' => 'col-sm-3',
* ]
* ```
*
* To get a different column layout in horizontal mode you can modify those options
* through [[fieldConfig]]:
*
*
* ```php
* $form = ActiveForm::begin([
* 'layout' => 'horizontal',
* 'fieldConfig' => [
* 'template' => "{label}\n{beginWrapper}\n{input}\n{hint}\n{error}\n{endWrapper}",
* 'horizontalCssClasses' => [
* 'label' => 'col-sm-4',
* 'offset' => 'col-sm-offset-4',
* 'wrapper' => 'col-sm-8',
* 'error' => '',
* 'hint' => '',
* ],
* ],
* ]);
* ```
*
* @see \yii\bootstrap\ActiveField for details on the [[fieldConfig]] options
* @see http://getbootstrap.com/css/#forms
*
* @author Michael Härtl <haertl.mike@gmail.com>
* @since 2.0
*/
class ActiveForm extends \yii\widgets\ActiveForm
{
/**
* @var array HTML attributes for the form tag. Default is `['role' => 'form']`.
*/
public $options = ['role' => 'form'];
/**
* @var string the form layout. Either 'standard' (default), 'horizontal' or 'inline'.
* By chosing a layout, an appropriate default field configuration is applied. This will
* render the form fields with slightly different markup for each layout. You can
* override these defaults through [[fieldConfig]].
* @see \yii\bootstrap\ActiveField for details on Bootstrap 3 field configuration
*/
public $layout = 'standard';
/**
* @inheritDoc
*/
public function init()
{
if (!in_array($this->layout, ['standard','horizontal','inline'])) {
throw new InvalidConfigException('Invalid layout type: '.$this->layout);
}
if ($this->layout!=='standard') {
Html::addCssClass($this->options, 'form-'.$this->layout);
}
if (!isset($this->fieldConfig['class'])) {
$this->fieldConfig['class'] = ActiveField::className();
}
return parent::init();
}
}