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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\widgets;
use Yii;
use yii\base\InvalidCallException;
use yii\base\Model;
use yii\base\Widget;
use yii\helpers\ArrayHelper;
use yii\helpers\Html;
use yii\helpers\Json;
use yii\helpers\Url;
/**
* ActiveForm is a widget that builds an interactive HTML form for one or multiple data models.
*
* For more details and usage information on ActiveForm, see the [guide article on forms](guide:input-forms).
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class ActiveForm extends Widget
{
/**
* Add validation state class to container tag
* @since 2.0.14
*/
const VALIDATION_STATE_ON_CONTAINER = 'container';
/**
* Add validation state class to input tag
* @since 2.0.14
*/
const VALIDATION_STATE_ON_INPUT = 'input';
/**
* @var array|string the form action URL. This parameter will be processed by [[\yii\helpers\Url::to()]].
* @see method for specifying the HTTP method for this form.
*/
public $action = '';
/**
* @var string the form submission method. This should be either `post` or `get`. Defaults to `post`.
*
* When you set this to `get` you may see the url parameters repeated on each request.
* This is because the default value of [[action]] is set to be the current request url and each submit
* will add new parameters instead of replacing existing ones.
* You may set [[action]] explicitly to avoid this:
*
* ```php
* $form = ActiveForm::begin([
* 'method' => 'get',
* 'action' => ['controller/action'],
* ]);
* ```
*/
public $method = 'post';
/**
* @var array the HTML attributes (name-value pairs) for the form tag.
* @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
*/
public $options = [];
/**
* @var string the default field class name when calling [[field()]] to create a new field.
* @see fieldConfig
*/
public $fieldClass = 'yii\widgets\ActiveField';
/**
* @var array|\Closure the default configuration used by [[field()]] when creating a new field object.
* This can be either a configuration array or an anonymous function returning a configuration array.
* If the latter, the signature should be as follows:
*
* ```php
* function ($model, $attribute)
* ```
*
* The value of this property will be merged recursively with the `$options` parameter passed to [[field()]].
*
* @see fieldClass
*/
public $fieldConfig = [];
/**
* @var bool whether to perform encoding on the error summary.
*/
public $encodeErrorSummary = true;
/**
* @var string the default CSS class for the error summary container.
* @see errorSummary()
*/
public $errorSummaryCssClass = 'error-summary';
/**
* @var string the CSS class that is added to a field container when the associated attribute is required.
*/
public $requiredCssClass = 'required';
/**
* @var string the CSS class that is added to a field container when the associated attribute has validation error.
*/
public $errorCssClass = 'has-error';
/**
* @var string the CSS class that is added to a field container when the associated attribute is successfully validated.
*/
public $successCssClass = 'has-success';
/**
* @var string the CSS class that is added to a field container when the associated attribute is being validated.
*/
public $validatingCssClass = 'validating';
/**
* @var string where to render validation state class
* Could be either "container" or "input".
* Default is "container".
* @since 2.0.14
*/
public $validationStateOn = self::VALIDATION_STATE_ON_CONTAINER;
/**
* @var bool whether to enable client-side data validation.
* If [[ActiveField::enableClientValidation]] is set, its value will take precedence for that input field.
*/
public $enableClientValidation = true;
/**
* @var bool whether to enable AJAX-based data validation.
* If [[ActiveField::enableAjaxValidation]] is set, its value will take precedence for that input field.
*/
public $enableAjaxValidation = false;
/**
* @var bool whether to hook up `yii.activeForm` JavaScript plugin.
* This property must be set `true` if you want to support client validation and/or AJAX validation, or if you
* want to take advantage of the `yii.activeForm` plugin. When this is `false`, the form will not generate
* any JavaScript.
* @see registerClientScript
*/
public $enableClientScript = true;
/**
* @var array|string the URL for performing AJAX-based validation. This property will be processed by
* [[Url::to()]]. Please refer to [[Url::to()]] for more details on how to configure this property.
* If this property is not set, it will take the value of the form's action attribute.
*/
public $validationUrl;
/**
* @var bool whether to perform validation when the form is submitted.
*/
public $validateOnSubmit = true;
/**
* @var bool whether to perform validation when the value of an input field is changed.
* If [[ActiveField::validateOnChange]] is set, its value will take precedence for that input field.
*/
public $validateOnChange = true;
/**
* @var bool whether to perform validation when an input field loses focus.
* If [[ActiveField::$validateOnBlur]] is set, its value will take precedence for that input field.
*/
public $validateOnBlur = true;
/**
* @var bool whether to perform validation while the user is typing in an input field.
* If [[ActiveField::validateOnType]] is set, its value will take precedence for that input field.
* @see validationDelay
*/
public $validateOnType = false;
/**
* @var int number of milliseconds that the validation should be delayed when the user types in the field
* and [[validateOnType]] is set `true`.
* If [[ActiveField::validationDelay]] is set, its value will take precedence for that input field.
*/
public $validationDelay = 500;
/**
* @var string the name of the GET parameter indicating the validation request is an AJAX request.
*/
public $ajaxParam = 'ajax';
/**
* @var string the type of data that you're expecting back from the server.
*/
public $ajaxDataType = 'json';
/**
* @var bool whether to scroll to the first error after validation.
* @since 2.0.6
*/
public $scrollToError = true;
/**
* @var int offset in pixels that should be added when scrolling to the first error.
* @since 2.0.11
*/
public $scrollToErrorOffset = 0;
/**
* @var array the client validation options for individual attributes. Each element of the array
* represents the validation options for a particular attribute.
* @internal
*/
public $attributes = [];
/**
* @var ActiveField[] the ActiveField objects that are currently active
*/
private $_fields = [];
/**
* Initializes the widget.
* This renders the form open tag.
*/
public function init()
{
parent::init();
if (!isset($this->options['id'])) {
$this->options['id'] = $this->getId();
}
ob_start();
ob_implicit_flush(false);
}
/**
* Runs the widget.
* This registers the necessary JavaScript code and renders the form open and close tags.
* @throws InvalidCallException if `beginField()` and `endField()` calls are not matching.
*/
public function run()
{
if (!empty($this->_fields)) {
throw new InvalidCallException('Each beginField() should have a matching endField() call.');
}
$content = ob_get_clean();
$html = Html::beginForm($this->action, $this->method, $this->options);
$html .= $content;
if ($this->enableClientScript) {
$this->registerClientScript();
}
$html .= Html::endForm();
return $html;
}
/**
* This registers the necessary JavaScript code.
* @since 2.0.12
*/
public function registerClientScript()
{
$id = $this->options['id'];
$options = Json::htmlEncode($this->getClientOptions());
$attributes = Json::htmlEncode($this->attributes);
$view = $this->getView();
ActiveFormAsset::register($view);
$view->registerJs("jQuery('#$id').yiiActiveForm($attributes, $options);");
}
/**
* Returns the options for the form JS widget.
* @return array the options.
*/
protected function getClientOptions()
{
$options = [
'encodeErrorSummary' => $this->encodeErrorSummary,
'errorSummary' => '.' . implode('.', preg_split('/\s+/', $this->errorSummaryCssClass, -1, PREG_SPLIT_NO_EMPTY)),
'validateOnSubmit' => $this->validateOnSubmit,
'errorCssClass' => $this->errorCssClass,
'successCssClass' => $this->successCssClass,
'validatingCssClass' => $this->validatingCssClass,
'ajaxParam' => $this->ajaxParam,
'ajaxDataType' => $this->ajaxDataType,
'scrollToError' => $this->scrollToError,
'scrollToErrorOffset' => $this->scrollToErrorOffset,
'validationStateOn' => $this->validationStateOn,
];
if ($this->validationUrl !== null) {
$options['validationUrl'] = Url::to($this->validationUrl);
}
// only get the options that are different from the default ones (set in yii.activeForm.js)
return array_diff_assoc($options, [
'encodeErrorSummary' => true,
'errorSummary' => '.error-summary',
'validateOnSubmit' => true,
'errorCssClass' => 'has-error',
'successCssClass' => 'has-success',
'validatingCssClass' => 'validating',
'ajaxParam' => 'ajax',
'ajaxDataType' => 'json',
'scrollToError' => true,
'scrollToErrorOffset' => 0,
'validationStateOn' => self::VALIDATION_STATE_ON_CONTAINER,
]);
}
/**
* Generates a summary of the validation errors.
* If there is no validation error, an empty error summary markup will still be generated, but it will be hidden.
* @param Model|Model[] $models the model(s) associated with this form.
* @param array $options the tag options in terms of name-value pairs. The following options are specially handled:
*
* - `header`: string, the header HTML for the error summary. If not set, a default prompt string will be used.
* - `footer`: string, the footer HTML for the error summary.
*
* The rest of the options will be rendered as the attributes of the container tag. The values will
* be HTML-encoded using [[\yii\helpers\Html::encode()]]. If a value is `null`, the corresponding attribute will not be rendered.
* @return string the generated error summary.
* @see errorSummaryCssClass
*/
public function errorSummary($models, $options = [])
{
Html::addCssClass($options, $this->errorSummaryCssClass);
$options['encode'] = $this->encodeErrorSummary;
return Html::errorSummary($models, $options);
}
/**
* Generates a form field.
* A form field is associated with a model and an attribute. It contains a label, an input and an error message
* and use them to interact with end users to collect their inputs for the attribute.
* @param Model $model the data model.
* @param string $attribute the attribute name or expression. See [[Html::getAttributeName()]] for the format
* about attribute expression.
* @param array $options the additional configurations for the field object. These are properties of [[ActiveField]]
* or a subclass, depending on the value of [[fieldClass]].
* @return ActiveField the created ActiveField object.
* @see fieldConfig
*/
public function field($model, $attribute, $options = [])
{
$config = $this->fieldConfig;
if ($config instanceof \Closure) {
$config = call_user_func($config, $model, $attribute);
}
if (!isset($config['class'])) {
$config['class'] = $this->fieldClass;
}
return Yii::createObject(ArrayHelper::merge($config, $options, [
'model' => $model,
'attribute' => $attribute,
'form' => $this,
]));
}
/**
* Begins a form field.
* This method will create a new form field and returns its opening tag.
* You should call [[endField()]] afterwards.
* @param Model $model the data model.
* @param string $attribute the attribute name or expression. See [[Html::getAttributeName()]] for the format
* about attribute expression.
* @param array $options the additional configurations for the field object.
* @return string the opening tag.
* @see endField()
* @see field()
*/
public function beginField($model, $attribute, $options = [])
{
$field = $this->field($model, $attribute, $options);
$this->_fields[] = $field;
return $field->begin();
}
/**
* Ends a form field.
* This method will return the closing tag of an active form field started by [[beginField()]].
* @return string the closing tag of the form field.
* @throws InvalidCallException if this method is called without a prior [[beginField()]] call.
*/
public function endField()
{
$field = array_pop($this->_fields);
if ($field instanceof ActiveField) {
return $field->end();
}
throw new InvalidCallException('Mismatching endField() call.');
}
/**
* Validates one or several models and returns an error message array indexed by the attribute IDs.
* This is a helper method that simplifies the way of writing AJAX validation code.
*
* For example, you may use the following code in a controller action to respond
* to an AJAX validation request:
*
* ```php
* $model = new Post;
* $model->load(Yii::$app->request->post());
* if (Yii::$app->request->isAjax) {
* Yii::$app->response->format = Response::FORMAT_JSON;
* return ActiveForm::validate($model);
* }
* // ... respond to non-AJAX request ...
* ```
*
* To validate multiple models, simply pass each model as a parameter to this method, like
* the following:
*
* ```php
* ActiveForm::validate($model1, $model2, ...);
* ```
*
* @param Model $model the model to be validated.
* @param mixed $attributes list of attributes that should be validated.
* If this parameter is empty, it means any attribute listed in the applicable
* validation rules should be validated.
*
* When this method is used to validate multiple models, this parameter will be interpreted
* as a model.
*
* @return array the error message array indexed by the attribute IDs.
*/
public static function validate($model, $attributes = null)
{
$result = [];
if ($attributes instanceof Model) {
// validating multiple models
$models = func_get_args();
$attributes = null;
} else {
$models = [$model];
}
/* @var $model Model */
foreach ($models as $model) {
$model->validate($attributes);
foreach ($model->getErrors() as $attribute => $errors) {
$result[Html::getInputId($model, $attribute)] = $errors;
}
}
return $result;
}
/**
* Validates an array of model instances and returns an error message array indexed by the attribute IDs.
* This is a helper method that simplifies the way of writing AJAX validation code for tabular input.
*
* For example, you may use the following code in a controller action to respond
* to an AJAX validation request:
*
* ```php
* // ... load $models ...
* if (Yii::$app->request->isAjax) {
* Yii::$app->response->format = Response::FORMAT_JSON;
* return ActiveForm::validateMultiple($models);
* }
* // ... respond to non-AJAX request ...
* ```
*
* @param array $models an array of models to be validated.
* @param mixed $attributes list of attributes that should be validated.
* If this parameter is empty, it means any attribute listed in the applicable
* validation rules should be validated.
* @return array the error message array indexed by the attribute IDs.
*/
public static function validateMultiple($models, $attributes = null)
{
$result = [];
/* @var $model Model */
foreach ($models as $i => $model) {
$model->validate($attributes);
foreach ($model->getErrors() as $attribute => $errors) {
$result[Html::getInputId($model, "[$i]" . $attribute)] = $errors;
}
}
return $result;
}
}