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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\web;
use Yii;
use yii\base\InlineAction;
use yii\helpers\Url;
/**
* Controller is the base class of web controllers.
*
* For more details and usage information on Controller, see the [guide article on controllers](guide:structure-controllers).
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class Controller extends \yii\base\Controller
{
/**
* @var bool whether to enable CSRF validation for the actions in this controller.
* CSRF validation is enabled only when both this property and [[\yii\web\Request::enableCsrfValidation]] are true.
*/
public $enableCsrfValidation = true;
/**
* @var array the parameters bound to the current action.
*/
public $actionParams = [];
/**
* Renders a view in response to an AJAX request.
*
* This method is similar to [[renderPartial()]] except that it will inject into
* the rendering result with JS/CSS scripts and files which are registered with the view.
* For this reason, you should use this method instead of [[renderPartial()]] to render
* a view to respond to an AJAX request.
*
* @param string $view the view name. Please refer to [[render()]] on how to specify a view name.
* @param array $params the parameters (name-value pairs) that should be made available in the view.
* @return string the rendering result.
*/
public function renderAjax($view, $params = [])
{
return $this->getView()->renderAjax($view, $params, $this);
}
/**
* Send data formatted as JSON.
*
* This method is a shortcut for sending data formatted as JSON. It will return
* the [[Application::getResponse()|response]] application component after configuring
* the [[Response::$format|format]] and setting the [[Response::$data|data]] that should
* be formatted. A common usage will be:
*
* ```php
* return $this->asJson($data);
* ```
*
* @param mixed $data the data that should be formatted.
* @return Response a response that is configured to send `$data` formatted as JSON.
* @since 2.0.11
* @see Response::$format
* @see Response::FORMAT_JSON
* @see JsonResponseFormatter
*/
public function asJson($data)
{
$response = Yii::$app->getResponse();
$response->format = Response::FORMAT_JSON;
$response->data = $data;
return $response;
}
/**
* Send data formatted as XML.
*
* This method is a shortcut for sending data formatted as XML. It will return
* the [[Application::getResponse()|response]] application component after configuring
* the [[Response::$format|format]] and setting the [[Response::$data|data]] that should
* be formatted. A common usage will be:
*
* ```php
* return $this->asXml($data);
* ```
*
* @param mixed $data the data that should be formatted.
* @return Response a response that is configured to send `$data` formatted as XML.
* @since 2.0.11
* @see Response::$format
* @see Response::FORMAT_XML
* @see XmlResponseFormatter
*/
public function asXml($data)
{
$response = Yii::$app->getResponse();
$response->format = Response::FORMAT_XML;
$response->data = $data;
return $response;
}
/**
* Binds the parameters to the action.
* This method is invoked by [[\yii\base\Action]] when it begins to run with the given parameters.
* This method will check the parameter names that the action requires and return
* the provided parameters according to the requirement. If there is any missing parameter,
* an exception will be thrown.
* @param \yii\base\Action $action the action to be bound with parameters
* @param array $params the parameters to be bound to the action
* @return array the valid parameters that the action can run with.
* @throws BadRequestHttpException if there are missing or invalid parameters.
*/
public function bindActionParams($action, $params)
{
if ($action instanceof InlineAction) {
$method = new \ReflectionMethod($this, $action->actionMethod);
} else {
$method = new \ReflectionMethod($action, 'run');
}
$args = [];
$missing = [];
$actionParams = [];
foreach ($method->getParameters() as $param) {
$name = $param->getName();
if (array_key_exists($name, $params)) {
if ($param->isArray()) {
$args[] = $actionParams[$name] = (array) $params[$name];
} elseif (!is_array($params[$name])) {
$args[] = $actionParams[$name] = $params[$name];
} else {
throw new BadRequestHttpException(Yii::t('yii', 'Invalid data received for parameter "{param}".', [
'param' => $name,
]));
}
unset($params[$name]);
} elseif ($param->isDefaultValueAvailable()) {
$args[] = $actionParams[$name] = $param->getDefaultValue();
} else {
$missing[] = $name;
}
}
if (!empty($missing)) {
throw new BadRequestHttpException(Yii::t('yii', 'Missing required parameters: {params}', [
'params' => implode(', ', $missing),
]));
}
$this->actionParams = $actionParams;
return $args;
}
/**
* {@inheritdoc}
*/
public function beforeAction($action)
{
if (parent::beforeAction($action)) {
if ($this->enableCsrfValidation && Yii::$app->getErrorHandler()->exception === null && !Yii::$app->getRequest()->validateCsrfToken()) {
throw new BadRequestHttpException(Yii::t('yii', 'Unable to verify your data submission.'));
}
return true;
}
return false;
}
/**
* Redirects the browser to the specified URL.
* This method is a shortcut to [[Response::redirect()]].
*
* You can use it in an action by returning the [[Response]] directly:
*
* ```php
* // stop executing this action and redirect to login page
* return $this->redirect(['login']);
* ```
*
* @param string|array $url the URL to be redirected to. This can be in one of the following formats:
*
* - a string representing a URL (e.g. "http://example.com")
* - a string representing a URL alias (e.g. "@example.com")
* - an array in the format of `[$route, ...name-value pairs...]` (e.g. `['site/index', 'ref' => 1]`)
* [[Url::to()]] will be used to convert the array into a URL.
*
* Any relative URL that starts with a single forward slash "/" will be converted
* into an absolute one by prepending it with the host info of the current request.
*
* @param int $statusCode the HTTP status code. Defaults to 302.
* See <https://tools.ietf.org/html/rfc2616#section-10>
* for details about HTTP status code
* @return Response the current response object
*/
public function redirect($url, $statusCode = 302)
{
// calling Url::to() here because Response::redirect() modifies route before calling Url::to()
return Yii::$app->getResponse()->redirect(Url::to($url), $statusCode);
}
/**
* Redirects the browser to the home page.
*
* You can use this method in an action by returning the [[Response]] directly:
*
* ```php
* // stop executing this action and redirect to home page
* return $this->goHome();
* ```
*
* @return Response the current response object
*/
public function goHome()
{
return Yii::$app->getResponse()->redirect(Yii::$app->getHomeUrl());
}
/**
* Redirects the browser to the last visited page.
*
* You can use this method in an action by returning the [[Response]] directly:
*
* ```php
* // stop executing this action and redirect to last visited page
* return $this->goBack();
* ```
*
* For this function to work you have to [[User::setReturnUrl()|set the return URL]] in appropriate places before.
*
* @param string|array $defaultUrl the default return URL in case it was not set previously.
* If this is null and the return URL was not set previously, [[Application::homeUrl]] will be redirected to.
* Please refer to [[User::setReturnUrl()]] on accepted format of the URL.
* @return Response the current response object
* @see User::getReturnUrl()
*/
public function goBack($defaultUrl = null)
{
return Yii::$app->getResponse()->redirect(Yii::$app->getUser()->getReturnUrl($defaultUrl));
}
/**
* Refreshes the current page.
* This method is a shortcut to [[Response::refresh()]].
*
* You can use it in an action by returning the [[Response]] directly:
*
* ```php
* // stop executing this action and refresh the current page
* return $this->refresh();
* ```
*
* @param string $anchor the anchor that should be appended to the redirection URL.
* Defaults to empty. Make sure the anchor starts with '#' if you want to specify it.
* @return Response the response object itself
*/
public function refresh($anchor = '')
{
return Yii::$app->getResponse()->redirect(Yii::$app->getRequest()->getUrl() . $anchor);
}
}
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