yii2 createUrl is duplicating the route - yii2

Question

i'm building multi lingual site with English and Arabic
url for English
url for Arabic
I want to switch language from any page exactly to the same page of the other language
so i made code like below.
$route = Yii::$app->controller->route;
$params = $_GET;
array_unshift($params, '/'.$route);
<?php if(Yii::$app->language == 'ar'){ ?>
<?= Html::a('English', [Yii::$app->urlManager->createUrl($params), 'language'=>'en']); ?>
<?php }else{?>
<?= Html::a('Arabic', [Yii::$app->urlManager->createUrl($params), 'language'=>'ar']); } ?>
and my url generating like below
/multi/backend/web/en/multi/backend/web/ar/site/index?val=hii&net=good
English
don't know what is wrong?
I'm using this for language management.
please check my main.php under backend/config
<?php
$params = array_merge(
require(__DIR__ . '/../../common/config/params.php'),
require(__DIR__ . '/../../common/config/params-local.php'),
require(__DIR__ . '/params.php'),
require(__DIR__ . '/params-local.php')
);
return [
'id' => 'app-backend',
'basePath' => dirname(__DIR__),
'controllerNamespace' => 'backend\controllers',
'language' => 'en',
'sourceLanguage' => 'en_UK',
'bootstrap' => ['log'],
'modules' => [],
'components' => [
'user' => [
'identityClass' => 'common\models\User',
'enableAutoLogin' => true,
],
'log' => [
'traceLevel' => YII_DEBUG ? 3 : 0,
'targets' => [
[
'class' => 'yii\log\FileTarget',
'levels' => ['error', 'warning'],
],
],
],
'errorHandler' => [
'errorAction' => 'site/error',
],
'i18n' => [
'translations' => [
'app' => [
'class' => 'yii\i18n\DbMessageSource',
'sourceLanguage' => 'en_UK',
],
],
],
'urlManager' => [
'class' => 'codemix\localeurls\UrlManager',
'languages' => ['en', 'ar'],
'enableDefaultLanguageUrlCode' => false,
'enablePrettyUrl' => true,
'showScriptName' => false,
'rules' => [
],
],
],
'params' => $params,
];

Answer 1

If you are doing it as in your example, you have to think about it on every link you create. This can be automated easily.
URL-Rule
You can solve this with an url-rule in your config file like so:
'<language:[\w]{2,2}>/<controller:\w+>/<action:\w+>'=>'<controller>/<action>',
This will assert the proper routing to your controller and provide you the desired language in the language-variable.
Custom UrlManager
You can extend the UrlManager-class and make sure the current language is always appended to the params:
class MyUrlManager extends \yii\web\UrlManager
{
// ...
/**
* #inheritdoc
*/
public function createUrl($params)
{
if (!isset($params['language'])) {
$params['language'] = Yii::$app->language;
}
return parent::createUrl($params);
}
// ...
}
This will automate the process of adding the language to the links you create.
Custom Application
Now you should also override the Application-class and always set the language to the one provided or choose a default (in this case en):
class MyApplication extends \yii\web\Application
{
// ...
/**
* #inheritdoc
*/
public function init()
{
parent::init();
$lang = Yii::$app->request->get('language', 'en');
Yii::$app->language = $lang;
}
// ...
}
Now your language will always be set to the default value or the one provided viathe query param as specified above.
Final thoughts
This should give you the basic idea on how to solve your problem. Adjust as necessary...especially the last part with the Application-class and how you retrieve the value of the language-var. I hope it helped!
Possible problems with your code and the extension provided
If you read the docs of the extension the urls are generated differently. It tells you to create the urls as follows:
Url::to(['demo/action', 'language'=>'ar'])
You are createing a simple link-tag and overwrite the $params. Try this instead:
echo Html::a('Arabic', Url::to(['site/index', 'language'=>'ar']));
For redirection to the current page just replace the first part with the current route.

Answer 2

after lots of trying ..i found a solution.. now its worked for me.
$route = Yii::$app->controller->route;
if(Yii::$app->language == 'ar'){
$_GET['language'] = 'en';
}else{
$_GET['language'] = 'ar';
}
$params = $_GET;
array_unshift($params, '/'.$route);
<?php if(Yii::$app->language == 'ar'){ ?>
<?= Html::a('English', Yii::$app->urlManager->createUrl($params)); ?>
<?php }else{?>
<?= Html::a('Arabic', Yii::$app->urlManager->createUrl($params)); } ?>
its working for the url like
http://localhost/multi/backend/web/site/index?page=2&per-page=6
and
http://localhost/multi/backend/web/site/index