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<?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\web;
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use Yii;
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use yii\base\Component;
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use yii\caching\Cache;
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/**
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* UrlManager handles HTTP request parsing and creation of URLs based on a set of rules.
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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 UrlManager extends Component
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{
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/**
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* @var boolean whether to enable pretty URLs. Instead of putting all parameters in the query
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* string part of a URL, pretty URLs allow using path info to represent some of the parameters
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* and can thus produce more user-friendly URLs, such as "/news/Yii-is-released", instead of
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* "/index.php?r=news/view&id=100".
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*/
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public $enablePrettyUrl = false;
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/**
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* @var boolean whether to enable strict parsing. If strict parsing is enabled, the incoming
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* requested URL must match at least one of the [[rules]] in order to be treated as a valid request.
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* Otherwise, the path info part of the request will be treated as the requested route.
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* This property is used only when [[enablePrettyUrl]] is true.
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*/
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public $enableStrictParsing = false;
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/**
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* @var array the rules for creating and parsing URLs when [[enablePrettyUrl]] is true.
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* This property is used only if [[enablePrettyUrl]] is true. Each element in the array
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* is the configuration array for creating a single URL rule. The configuration will
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* be merged with [[ruleConfig]] first before it is used for creating the rule object.
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*
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* A special shortcut format can be used if a rule only specifies [[UrlRule::pattern|pattern]]
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* and [[UrlRule::route|route]]: `'pattern' => 'route'`. That is, instead of using a configuration
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* array, one can use the key to represent the pattern and the value the corresponding route.
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* For example, `'post/<id:\d+>' => 'post/view'`.
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*
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* For RESTful routing the mentioned shortcut format also allows you to specify the
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* [[UrlRule::verb|HTTP verb]] that the rule should apply for.
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* You can do that by prepending it to the pattern, separated by space.
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* For example, `'PUT post/<id:\d+>' => 'post/update'`.
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* You may specify multiple verbs by separating them with comma
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* like this: `'POST,PUT post/index' => 'post/create'`.
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* The supported verbs in the shortcut format are: GET, HEAD, POST, PUT, PATCH and DELETE.
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* Note that [[UrlRule::mode|mode]] will be set to PARSING_ONLY when specifying verb in this way
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* so you normally would not specify a verb for normal GET request.
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*
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* Here is an example configuration for RESTful CRUD controller:
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*
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* ~~~php
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* array(
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* 'dashboard' => 'site/index',
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*
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* 'POST <controller:\w+>s' => '<controller>/create',
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* '<controller:\w+>s' => '<controller>/index',
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*
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* 'PUT <controller:\w+>/<id:\d+>' => '<controller>/update',
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* 'DELETE <controller:\w+>/<id:\d+>' => '<controller>/delete',
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* '<controller:\w+>/<id:\d+>' => '<controller>/view',
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* );
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* ~~~
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*
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* Note that if you modify this property after the UrlManager object is created, make sure
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* you populate the array with rule objects instead of rule configurations.
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*/
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public $rules = array();
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/**
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* @var string the URL suffix used when in 'path' format.
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* For example, ".html" can be used so that the URL looks like pointing to a static HTML page.
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* This property is used only if [[enablePrettyUrl]] is true.
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*/
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public $suffix;
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/**
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* @var boolean whether to show entry script name in the constructed URL. Defaults to true.
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* This property is used only if [[enablePrettyUrl]] is true.
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*/
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public $showScriptName = true;
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/**
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* @var string the GET variable name for route. This property is used only if [[enablePrettyUrl]] is false.
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*/
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public $routeVar = 'r';
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/**
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* @var Cache|string the cache object or the application component ID of the cache object.
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* Compiled URL rules will be cached through this cache object, if it is available.
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*
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* After the UrlManager object is created, if you want to change this property,
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* you should only assign it with a cache object.
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* Set this property to null if you do not want to cache the URL rules.
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*/
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public $cache = 'cache';
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/**
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* @var array the default configuration of URL rules. Individual rule configurations
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* specified via [[rules]] will take precedence when the same property of the rule is configured.
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*/
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public $ruleConfig = array(
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'class' => 'yii\web\UrlRule',
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);
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private $_baseUrl;
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private $_hostInfo;
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/**
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* Initializes UrlManager.
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*/
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public function init()
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{
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parent::init();
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$this->compileRules();
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}
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/**
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* Parses the URL rules.
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*/
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protected function compileRules()
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{
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if (!$this->enablePrettyUrl || empty($this->rules)) {
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return;
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}
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if (is_string($this->cache)) {
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$this->cache = Yii::$app->getComponent($this->cache);
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}
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if ($this->cache instanceof Cache) {
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$key = __CLASS__;
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$hash = md5(json_encode($this->rules));
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if (($data = $this->cache->get($key)) !== false && isset($data[1]) && $data[1] === $hash) {
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$this->rules = $data[0];
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return;
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}
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}
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$rules = array();
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foreach ($this->rules as $key => $rule) {
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if (!is_array($rule)) {
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$rule = array(
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'route' => $rule,
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);
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if (preg_match('/^((?:(GET|HEAD|POST|PUT|PATCH|DELETE),)*(GET|HEAD|POST|PUT|PATCH|DELETE))\s+(.*)$/', $key, $matches)) {
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$rule['verb'] = explode(',', $matches[1]);
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$rule['mode'] = UrlRule::PARSING_ONLY;
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$key = $matches[4];
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}
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$rule['pattern'] = $key;
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}
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$rules[] = Yii::createObject(array_merge($this->ruleConfig, $rule));
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}
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$this->rules = $rules;
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if (isset($key, $hash)) {
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$this->cache->set($key, array($this->rules, $hash));
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}
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}
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/**
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* Parses the user request.
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* @param Request $request the request component
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* @return array|boolean the route and the associated parameters. The latter is always empty
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* if [[enablePrettyUrl]] is false. False is returned if the current request cannot be successfully parsed.
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*/
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public function parseRequest($request)
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{
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if ($this->enablePrettyUrl) {
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$pathInfo = $request->getPathInfo();
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/** @var $rule UrlRule */
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foreach ($this->rules as $rule) {
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if (($result = $rule->parseRequest($this, $request)) !== false) {
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Yii::trace("Request parsed with URL rule: {$rule->name}", __METHOD__);
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return $result;
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}
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}
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if ($this->enableStrictParsing) {
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return false;
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}
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$suffix = (string)$this->suffix;
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if ($suffix !== '' && $pathInfo !== '') {
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$n = strlen($this->suffix);
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if (substr($pathInfo, -$n) === $this->suffix) {
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$pathInfo = substr($pathInfo, 0, -$n);
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if ($pathInfo === '') {
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// suffix alone is not allowed
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return false;
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}
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} else {
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// suffix doesn't match
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return false;
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}
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}
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Yii::trace('No matching URL rules. Using default URL parsing logic.', __METHOD__);
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return array($pathInfo, array());
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} else {
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$route = $request->get($this->routeVar);
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if (is_array($route)) {
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$route = '';
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}
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Yii::trace('Pretty URL not enabled. Using default URL parsing logic.', __METHOD__);
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return array((string)$route, array());
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}
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}
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/**
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* Creates a URL using the given route and parameters.
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* The URL created is a relative one. Use [[createAbsoluteUrl()]] to create an absolute URL.
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* @param string $route the route
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* @param array $params the parameters (name-value pairs)
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* @return string the created URL
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*/
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public function createUrl($route, $params = array())
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{
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$anchor = isset($params['#']) ? '#' . $params['#'] : '';
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unset($params['#'], $params[$this->routeVar]);
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$route = trim($route, '/');
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$baseUrl = $this->getBaseUrl();
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if ($this->enablePrettyUrl) {
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/** @var $rule UrlRule */
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foreach ($this->rules as $rule) {
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if (($url = $rule->createUrl($this, $route, $params)) !== false) {
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if ($rule->host !== null) {
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if ($baseUrl !== '' && ($pos = strpos($url, '/', 8)) !== false) {
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return substr($url, 0, $pos) . $baseUrl . substr($url, $pos);
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} else {
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return $url . $baseUrl . $anchor;
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}
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} else {
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return "$baseUrl/{$url}{$anchor}";
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}
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}
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}
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if ($this->suffix !== null) {
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$route .= $this->suffix;
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}
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if (!empty($params)) {
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$route .= '?' . http_build_query($params);
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}
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return "$baseUrl/{$route}{$anchor}";
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} else {
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$url = "$baseUrl?{$this->routeVar}=$route";
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if (!empty($params)) {
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$url .= '&' . http_build_query($params);
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}
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return $url;
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}
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}
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/**
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* Creates an absolute URL using the given route and parameters.
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* This method prepends the URL created by [[createUrl()]] with the [[hostInfo]].
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* @param string $route the route
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* @param array $params the parameters (name-value pairs)
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* @return string the created URL
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* @see createUrl()
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*/
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public function createAbsoluteUrl($route, $params = array())
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{
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$url = $this->createUrl($route, $params);
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if (strpos($url, '://') !== false) {
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return $url;
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} else {
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return $this->getHostInfo() . $url;
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}
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}
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/**
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* Returns the base URL that is used by [[createUrl()]] to prepend URLs it creates.
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* It defaults to [[Request::scriptUrl]] if [[showScriptName]] is true or [[enablePrettyUrl]] is false;
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* otherwise, it defaults to [[Request::baseUrl]].
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* @return string the base URL that is used by [[createUrl()]] to prepend URLs it creates.
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*/
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public function getBaseUrl()
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{
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if ($this->_baseUrl === null) {
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/** @var $request \yii\web\Request */
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$request = Yii::$app->getRequest();
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$this->_baseUrl = $this->showScriptName || !$this->enablePrettyUrl ? $request->getScriptUrl() : $request->getBaseUrl();
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}
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return $this->_baseUrl;
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}
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/**
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* Sets the base URL that is used by [[createUrl()]] to prepend URLs it creates.
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* @param string $value the base URL that is used by [[createUrl()]] to prepend URLs it creates.
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*/
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public function setBaseUrl($value)
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{
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$this->_baseUrl = rtrim($value, '/');
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}
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/**
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* Returns the host info that is used by [[createAbsoluteUrl()]] to prepend URLs it creates.
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* @return string the host info (e.g. "http://www.example.com") that is used by [[createAbsoluteUrl()]] to prepend URLs it creates.
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*/
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public function getHostInfo()
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{
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if ($this->_hostInfo === null) {
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$this->_hostInfo = Yii::$app->getRequest()->getHostInfo();
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}
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return $this->_hostInfo;
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}
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/**
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* Sets the host info that is used by [[createAbsoluteUrl()]] to prepend URLs it creates.
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* @param string $value the host info (e.g. "http://www.example.com") that is used by [[createAbsoluteUrl()]] to prepend URLs it creates.
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*/
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public function setHostInfo($value)
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{
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$this->_hostInfo = rtrim($value, '/');
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}
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}
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