Site language management module

Language behavior fix

backend/messages/ru/main.php

@@ -38,4 +38,5 @@ return [
 	'Disable' => 'Отключить',
 	'Settings List' => 'Все настройки',
 	'Create Setting' => 'Новый параметр',
+	'Interface Language' => 'Язык интерфейса',
 ];

backend/views/layouts/header.php

@@ -200,6 +200,7 @@ use core\components\avatar_generator\AvatarGenerator;
 			            <span><?= \core\helpers\LanguageHelper::getBackendName(Yii::$app->user->identity->user->backend_language) ?> <i class="caret"></i></span>
 		            </a>
 		            <ul class="dropdown-menu">
+			            <li class="header"><?= Yii::t('main', 'Interface Language') ?></li>
 			            <li>
 				            <!-- inner menu: contains the actual data -->
 				            <ul class="menu">

common/bootstrap/SetUp.php

@@ -5,6 +5,7 @@ namespace common\bootstrap;
 //use Elasticsearch\Client;
 //use Elasticsearch\ClientBuilder;
 //use core\components\modules\ModuleInterface;
+use common\modules\languages\entities\Language;
 use core\entities\ModuleRecord;
 //use League\Flysystem\Adapter\Ftp;
 //use League\Flysystem\Filesystem;
@@ -38,6 +39,7 @@ use yii\base\ErrorHandler;
 use yii\caching\Cache;
 use yii\di\Container;
 use yii\di\Instance;
+use yii\helpers\ArrayHelper;
 use yii\mail\MailerInterface;
 use yii\rbac\ManagerInterface;
 use yii\queue\Queue;
@@ -136,12 +138,6 @@ class SetUp implements BootstrapInterface
         $container->set(ImageUploadBehavior::class, FlySystemImageUploadBehavior::class);
         */
 
-	    // Set backend languages
-	    if (basename($app->getBasePath()) === 'backend') {
-		    $app->language = ! $app->user->isGuest && $app->user->identity->user->backend_language ? $app->user->identity->user->backend_language : $app->language;
-		    $app->params['frontendLanguage'] = Yii::$app->session->get('frontendLanguage', Yii::$app->params['defaultLanguage']);
-	    }
-
         // Connect common modules
 	    if (Yii::$app->db->schema->getTableSchema('{{%modules}}') !== null) {
 		    $modules = ModuleRecord::find()->andWhere(['type' => 'common'])->andWhere(['active' => 1])->all();
@@ -153,5 +149,15 @@ class SetUp implements BootstrapInterface
 		    }
 	    }
 
+	    // Set frontend languages
+	    $language = Language::find()->active()->default()->one();
+	    Yii::$app->params['defaultLanguage'] = $language ? $language->name : 'ru';
+	    Yii::$app->params['translatedLanguages'] = ArrayHelper::map(Language::find()->active()->all(), 'name', 'title');
+
+	    // Set backend languages
+	    if (basename($app->getBasePath()) === 'backend') {
+		    $app->language = ! $app->user->isGuest && $app->user->identity->user->backend_language ? $app->user->identity->user->backend_language : $app->language;
+		    $app->params['frontendLanguage'] = Yii::$app->session->get('frontendLanguage', Yii::$app->params['defaultLanguage']);
+	    }
     }
 }

common/modules/languages/LanguagesModule.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace common\modules\languages;
+
+use core\components\modules\ModuleInterface;
+use yii\helpers\ArrayHelper;
+
+
+/**
+ * languages module definition class
+ */
+class LanguagesModule extends \yii\base\Module implements ModuleInterface
+{
+    /**
+     * @inheritdoc
+     */
+    public $controllerNamespace = 'common\modules\languages\controllers';
+
+    /**
+     * @inheritdoc
+     */
+    public function init()
+    {
+        parent::init();
+
+        // custom initialization code goes here
+    }
+
+	public function bootstrap($app)
+	{
+		// add migration path
+		$app->controllerMap['migrate']['migrationPath'][] = '@common/modules/languages/migrations';
+
+		$app->getUrlManager()->addRules([
+			'languages/manage/language/view/<id:\d+>' => 'languages/manage/language/view',
+		]);
+
+		// add languages
+		$app->getI18n()->translations = ArrayHelper::merge($app->getI18n()->translations, [
+			'languages' => [
+				'class' => 'yii\i18n\PhpMessageSource',
+				'basePath' => '@common/modules/languages/messages',
+			],
+		]);
+
+		// add menu items
+		if (basename($app->getBasePath()) === 'backend') {
+			$app->params['adminMenu'][] = [
+				'label'   => \Yii::t( 'languages', 'Site Languages' ),
+				'icon'    => 'language',
+				'url'   => [ '/languages/manage/language/index' ],
+				'visible' => \Yii::$app->user->can( 'admin' ) || \Yii::$app->user->can( 'LanguagesManagement' )
+			];
+		}
+	}
+}

common/modules/languages/controllers/manage/LanguageController.php

@@ -0,0 +1,166 @@
+<?php
+
+namespace common\modules\languages\controllers\manage;
+
+use common\modules\languages\entities\Language;
+use common\modules\languages\forms\LanguageForm;
+use common\modules\languages\forms\search\LanguageSearch;
+use common\modules\languages\services\LanguageManageService;
+use yii\web\NotFoundHttpException;
+use yii\filters\AccessControl;
+use yii\filters\VerbFilter;
+use yii\web\Controller;
+use Yii;
+
+class LanguageController extends Controller
+{
+    private $service;
+
+    public function __construct($id, $module, LanguageManageService $service, $config = [])
+    {
+        parent::__construct($id, $module, $config);
+        $this->service = $service;
+    }
+
+    public function behaviors(): array
+    {
+        return [
+	        'access' => [
+		        'class' => AccessControl::class,
+		        'rules' => [
+			        [
+				        'allow' => true,
+				        'roles' => ['LanguagesManagement'],
+			        ],
+			        [    // all the action are accessible to admin
+				        'allow' => true,
+				        'roles' => ['admin'],
+			        ],
+		        ],
+	        ],
+            'verbs' => [
+                'class' => VerbFilter::class,
+                'actions' => [
+                    'delete' => ['POST'],
+                    'set-default' => ['POST'],
+                ],
+            ],
+        ];
+    }
+
+    /**
+     * @return mixed
+     */
+    public function actionIndex()
+    {
+        $searchModel = new LanguageSearch();
+        $dataProvider = $searchModel->search(Yii::$app->request->queryParams);
+
+        return $this->render('index', [
+            'searchModel' => $searchModel,
+            'dataProvider' => $dataProvider,
+        ]);
+    }
+
+	/**
+	 * @param $id
+	 *
+	 * @return string
+	 * @throws NotFoundHttpException
+	 */
+    public function actionView($id)
+    {
+        return $this->render('view', [
+            'language' => $this->findModel($id),
+        ]);
+    }
+
+    /**
+     * @return mixed
+     */
+    public function actionCreate()
+    {
+        $form = new LanguageForm();
+
+        if ($form->load(Yii::$app->request->post()) && $form->validate()) {
+            try {
+                $form = $this->service->create($form);
+                return $this->redirect(['view', 'id' => $form->id]);
+            } catch (\DomainException $e) {
+                Yii::$app->errorHandler->logException($e);
+                Yii::$app->session->setFlash('error', $e->getMessage());
+            }
+        }
+        else {
+	        $form->status = $form->status ?: Language::STATUS_ACTIVE;
+        }
+        return $this->render('create', [
+            'model' => $form,
+        ]);
+    }
+
+	/**
+	 * @param $id
+	 *
+	 * @return string|\yii\web\Response
+	 * @throws NotFoundHttpException
+	 */
+    public function actionUpdate($id)
+    {
+        $language = $this->findModel($id);
+        $form = new LanguageForm($language);
+
+        if ($form->load(Yii::$app->request->post()) && $form->validate()) {
+            try {
+                $this->service->edit($language->id, $form);
+                return $this->redirect(['view', 'id' => $language->id]);
+            } catch (\DomainException $e) {
+                Yii::$app->errorHandler->logException($e);
+                Yii::$app->session->setFlash('error', $e->getMessage());
+            }
+        }
+
+        return $this->render('update', [
+            'model' => $form,
+            'language' => $language,
+        ]);
+    }
+
+    /**
+     * @param integer $id
+     * @return mixed
+     */
+    public function actionDelete($id)
+    {
+        try {
+            $this->service->remove($id);
+        } catch (\DomainException $e) {
+            Yii::$app->errorHandler->logException($e);
+            Yii::$app->session->setFlash('error', $e->getMessage());
+        }
+        return $this->redirect(['index']);
+    }
+
+    public function actionSetDefault($id)
+    {
+		$language = $this->findModel($id);
+		if ($language) {
+			$this->service->setDefault($language);
+			return $this->redirect(['index']);
+		}
+	    throw new NotFoundHttpException('Language is not exists');
+    }
+
+    /**
+     * @param integer $id
+     * @return Language the loaded model
+     * @throws NotFoundHttpException if the model cannot be found
+     */
+    protected function findModel($id): Language
+    {
+        if (($model = Language::findOne($id)) !== null) {
+            return $model;
+        }
+        throw new NotFoundHttpException('The requested language does not exist.');
+    }
+}

common/modules/languages/entities/Language.php

@@ -0,0 +1,96 @@
+<?php
+
+namespace common\modules\languages\entities;
+
+use common\modules\languages\entities\queries\LanguageQuery;
+use yii\db\ActiveRecord;
+use Yii;
+
+
+/**
+ * This is the model class for table "languages".
+ *
+ * @property int $id
+ * @property string $title
+ * @property string $name
+ * @property int $default
+ * @property int $status
+ *
+ */
+class Language extends ActiveRecord
+{
+	const STATUS_DRAFT = 0;
+	const STATUS_ACTIVE = 1;
+
+	const DEFAULT_TRUE = 1;
+	const DEFAULT_FALSE = 0;
+
+	public static function create($name, $title, $status): self
+	{
+		$language = new static();
+		$language->name = $name;
+		$language->title = $title;
+		$language->status = $status;
+		return $language;
+	}
+
+	public function edit($name, $title, $status): void
+	{
+		$this->name = $name;
+		$this->title = $title;
+		$this->status = $status;
+	}
+
+    /**
+     * @inheritdoc
+     */
+    public static function tableName()
+    {
+        return 'languages';
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function attributeLabels()
+    {
+        return [
+            'id' => Yii::t('languages', 'ID'),
+            'name' => Yii::t('languages', 'Name'),
+            'title' => Yii::t('languages', 'Title'),
+            'status' => Yii::t('languages', 'Status'),
+            'default' => Yii::t('languages', 'Default'),
+        ];
+    }
+
+	public function activate(): void
+	{
+		if ($this->isActive()) {
+			throw new \DomainException('Language is already active.');
+		}
+		$this->status = self::STATUS_ACTIVE;
+	}
+
+	public function draft(): void
+	{
+		if ($this->isDraft()) {
+			throw new \DomainException('Language is already draft.');
+		}
+		$this->status = self::STATUS_DRAFT;
+	}
+
+	public function isActive(): bool
+	{
+		return $this->status == self::STATUS_ACTIVE;
+	}
+
+	public function isDraft(): bool
+	{
+		return $this->status == self::STATUS_DRAFT;
+	}
+
+	public static function find(): LanguageQuery
+	{
+		return new LanguageQuery(static::class);
+	}
+}

common/modules/languages/entities/queries/LanguageQuery.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace common\modules\languages\entities\queries;
+
+use common\modules\languages\entities\Language;
+use yii\db\ActiveQuery;
+
+class LanguageQuery extends ActiveQuery
+{
+	/**
+	 * @return LanguageQuery
+	 */
+    public function active()
+    {
+        return $this->andWhere(['status' => Language::STATUS_ACTIVE]);
+    }
+
+    public function default()
+    {
+    	return $this->andWhere(['default' => Language::DEFAULT_TRUE]);
+    }
+}

common/modules/languages/forms/LanguageForm.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace common\modules\languages\forms;
+
+use common\modules\languages\entities\Language;
+use yii\base\Model;
+use Yii;
+
+class LanguageForm extends Model
+{
+	public $name;
+    public $title;
+    public $status;
+
+    public $_language;
+
+    public function __construct(Language $language = null, $config = [])
+    {
+        if ($language) {
+        	$this->name = $language->name;
+            $this->title = $language->title;
+            $this->status = $language->status;
+        }
+        parent::__construct($config);
+    }
+
+    public function rules(): array
+    {
+        return [
+            [['title', 'name'], 'required'],
+            [['status'], 'integer'],
+            [['name'], 'string', 'max' => 2],
+	        [['title'], 'string', 'max' => 64],
+        ];
+    }
+
+	public function attributeLabels() {
+		return [
+			'id' => Yii::t('languages', 'ID'),
+			'name' => Yii::t('languages', 'Name'),
+			'title' => Yii::t('languages', 'Title'),
+			'status' => Yii::t('languages', 'Status'),
+			'default' => Yii::t('languages', 'Default'),
+		];
+	}
+}

common/modules/languages/forms/search/LanguageSearch.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace common\modules\languages\forms\search;
+
+use common\modules\languages\entities\Language;
+use yii\base\Model;
+use yii\data\ActiveDataProvider;
+
+class LanguageSearch extends Model
+{
+    public $id;
+    public $name;
+    public $title;
+    public $status;
+
+    public function rules(): array
+    {
+        return [
+            [['id', 'status'], 'integer'],
+            [['title', 'name'], 'safe'],
+        ];
+    }
+
+    /**
+     * @param array $params
+     * @return ActiveDataProvider
+     */
+    public function search(array $params): ActiveDataProvider
+    {
+        $query = Language::find();
+
+        $dataProvider = new ActiveDataProvider([
+            'query' => $query,
+            'sort' => [
+                'defaultOrder' => ['id' => SORT_ASC]
+            ]
+        ]);
+
+        $this->load($params);
+
+        if (!$this->validate()) {
+            $query->where('0=1');
+            return $dataProvider;
+        }
+
+        $query->andFilterWhere([
+            'id' => $this->id,
+	        'status' => $this->status,
+        ]);
+
+        $query
+            ->andFilterWhere(['like', 'title', $this->title])
+	        ->andFilterWhere(['like', 'name', $this->name]);
+        return $dataProvider;
+    }
+}

common/modules/languages/helpers/LanguageHelper.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Created by Error202
+ * Date: 21.08.2018
+ */
+
+namespace common\modules\languages\helpers;
+
+use common\modules\languages\entities\Language;
+use yii\helpers\ArrayHelper;
+use yii\helpers\Html;
+use Yii;
+
+class LanguageHelper
+{
+	public static function defaultLabel($default): string
+	{
+		switch ($default) {
+			case Language::DEFAULT_FALSE:
+				$class = 'text-gray';
+				break;
+			case Language::DEFAULT_TRUE:
+				$class = 'text-yellow';
+				break;
+			default:
+				$class = 'text-gray';
+		}
+
+		return '<i class="fa fa-star '.$class.'" aria-hidden="true"></i>';
+	}
+
+	public static function statusList(): array
+	{
+		return [
+			Language::STATUS_DRAFT => Yii::t('languages', 'Draft'),
+			Language::STATUS_ACTIVE => Yii::t('languages', 'Active'),
+		];
+	}
+
+	public static function statusName($status): string
+	{
+		return ArrayHelper::getValue(self::statusList(), $status);
+	}
+
+	public static function statusLabel($status): string
+	{
+		switch ($status) {
+			case Language::STATUS_DRAFT:
+				$class = 'label label-default';
+				break;
+			case Language::STATUS_ACTIVE:
+				$class = 'label label-success';
+				break;
+			default:
+				$class = 'label label-default';
+		}
+
+		return Html::tag('span', ArrayHelper::getValue(self::statusList(), $status), [
+			'class' => $class,
+		]);
+	}
+}
+

common/modules/languages/manifest.php

@@ -0,0 +1,8 @@
+<?php
+
+return [
+	'version' => '1.0.1',
+	'name' => 'languages',
+	'description' => 'Web site languages management',
+	'module' => 'LanguagesModule',
+];

common/modules/languages/messages/ru/languages.php

@@ -0,0 +1,17 @@
+<?php
+
+return [
+	'languages' => 'Языки',
+	'Languages' => 'Языки',
+	'Site Languages' => 'Языки веб-сайта',
+	'Create Language' => 'Новый язык',
+	'Update Language: {name}' => 'Редактирование языка: {name}',
+	'Title' => 'Заголовок',
+	'Name' => 'Название',
+	'Status' => 'Статус',
+	'Default' => 'По умолчанию',
+	'Active' => 'Включен',
+	'Draft' => 'Отключен',
+	'Publish' => 'Публикация',
+	'Are you sure you want to set this language as default?' => 'Вы действительно хотите сделать этот язык основным?',
+];

common/modules/languages/migrations/m180827_210614_create_languages_table.php

@@ -0,0 +1,33 @@
+<?php
+
+use yii\db\Migration;
+
+/**
+ * Handles the creation of table `languages`.
+ */
+class m180827_210614_create_languages_table extends Migration
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function safeUp()
+    {
+	    $tableOptions = 'CHARACTER SET utf8 COLLATE utf8_unicode_ci ENGINE=InnoDB';
+
+        $this->createTable('{{%languages}}', [
+            'id' => $this->primaryKey(),
+	        'name' => $this->string(2)->notNull(),
+	        'title' => $this->string(64)->notNull(),
+	        'status' => $this->integer(1)->defaultValue(1),
+	        'default' => $this->integer(1)->defaultValue(0),
+        ], $tableOptions);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function safeDown()
+    {
+        $this->dropTable('{{%languages}}');
+    }
+}

common/modules/languages/repositories/LanguageRepository.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace common\modules\languages\repositories;
+
+use common\modules\languages\entities\Language;
+use core\repositories\NotFoundException;
+
+class LanguageRepository
+{
+    public function get($id): Language
+    {
+        if (!$language = Language::findOne($id)) {
+            throw new NotFoundException('Language is not found.');
+        }
+        return $language;
+    }
+
+    public function save(Language $language): void
+    {
+        if (!$language->save()) {
+            throw new \RuntimeException('Saving error.');
+        }
+    }
+
+    public function remove(Language $language): void
+    {
+        if (!$language->delete()) {
+            throw new \RuntimeException('Removing error.');
+        }
+    }
+
+    public function clearDefaults()
+    {
+    	Language::updateAll(['default' => 0]);
+    }
+}

common/modules/languages/services/LanguageManageService.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace common\modules\languages\services;
+
+use common\modules\languages\entities\Language;
+use common\modules\languages\forms\LanguageForm;
+use common\modules\languages\helpers\LanguageHelper;
+use common\modules\languages\repositories\LanguageRepository;
+
+class LanguageManageService
+{
+    private $repository;
+
+    public function __construct(LanguageRepository $repository)
+    {
+        $this->repository = $repository;
+    }
+
+    public function create(LanguageForm $form): Language
+    {
+        $language = Language::create(
+            $form->name,
+	        $form->title,
+            $form->status
+        );
+        $this->repository->save($language);
+        return $language;
+    }
+
+    public function edit($id, LanguageForm $form): void
+    {
+        $language = $this->repository->get($id);
+
+        $language->edit(
+	        $form->name,
+	        $form->title,
+	        $form->status
+        );
+        $this->repository->save($language);
+    }
+
+    public function remove($id): void
+    {
+        $language = $this->repository->get($id);
+        $this->repository->remove($language);
+    }
+
+    public function setDefault(Language $language)
+    {
+    	$this->repository->clearDefaults();
+    	$language->default = Language::DEFAULT_TRUE;
+    	$this->repository->save($language);
+    }
+}

common/modules/languages/views/manage/language/_form.php

@@ -0,0 +1,71 @@
+<?php
+
+use yii\helpers\Html;
+use kartik\form\ActiveForm;
+use common\modules\languages\helpers\LanguageHelper;
+
+/* @var $this yii\web\View */
+/* @var $model \common\modules\languages\forms\LanguageForm */
+/* @var $form yii\widgets\ActiveForm */
+
+$js2 = '
+$(".hint-block").each(function () {
+    var $hint = $(this);
+    var label = $hint.parent().find("label");
+    label.html(label.html() + \' <i style="color:#3c8dbc" class="fa fa-question-circle" aria-hidden="true"></i>\');
+    label.addClass("help").popover({
+        html: true,
+        trigger: "hover",
+        placement: "bottom",
+        content: $hint.html()
+    });
+    $(this).hide();
+});
+';
+$this->registerJs($js2);
+?>
+
+<div class="language-form">
+
+    <?php $form = ActiveForm::begin(); ?>
+
+	<div class="row">
+		<div class="col-md-10">
+
+		    <div class="box box-default">
+		        <div class="box-body">
+
+			        <div class="row">
+				        <div class="col-md-2">
+					        <?= $form->field($model, 'name')->textInput(['maxlength' => true]) ?>
+				        </div>
+				        <div class="col-md-10">
+					        <?= $form->field($model, 'title')->textInput(['maxlength' => true]) ?>
+				        </div>
+			        </div>
+
+		        </div>
+		    </div>
+
+		    <div class="form-group">
+		        <?= Html::submitButton(Yii::t('buttons', 'Save'), ['class' => 'btn btn-success']) ?>
+		    </div>
+
+		</div>
+
+		<div class="col-md-2">
+			<div class="box box-default">
+				<div class="box-header with-border"><?= Yii::t('languages', 'Publish') ?></div>
+				<div class="box-body">
+
+					<?= $form->field($model, 'status')->radioList(LanguageHelper::statusList()) ?>
+
+				</div>
+			</div>
+		</div>
+
+	</div>
+
+    <?php ActiveForm::end(); ?>
+
+</div>

common/modules/languages/views/manage/language/create.php

@@ -0,0 +1,16 @@
+<?php
+
+/* @var $this yii\web\View */
+/* @var $model \common\modules\languages\forms\LanguageForm */
+
+$this->title = Yii::t('languages', 'Create Language');
+$this->params['breadcrumbs'][] = ['label' => Yii::t('languages', 'Languages'), 'url' => ['index']];
+$this->params['breadcrumbs'][] = $this->title;
+?>
+<div class="language-create">
+
+    <?= $this->render('_form', [
+        'model' => $model,
+    ]) ?>
+
+</div>

common/modules/languages/views/manage/language/index.php

@@ -0,0 +1,69 @@
+<?php
+
+use yii\grid\ActionColumn;
+use yii\helpers\Html;
+use yii\grid\GridView;
+use common\modules\languages\entities\Language;
+use common\modules\languages\helpers\LanguageHelper;
+
+/* @var $this yii\web\View */
+/* @var $searchModel \common\modules\languages\forms\search\LanguageSearch */
+/* @var $dataProvider yii\data\ActiveDataProvider */
+
+$this->title = Yii::t('languages', 'Languages');
+$this->params['breadcrumbs'][] = $this->title;
+?>
+<div class="language-index">
+
+    <p>
+        <?= Html::a(Yii::t('languages','Create Language'), ['create'], ['class' => 'btn btn-success']) ?>
+    </p>
+
+    <div class="box">
+        <div class="box-body">
+            <?= GridView::widget([
+                'dataProvider' => $dataProvider,
+                'filterModel' => $searchModel,
+                'columns' => [
+                	[
+                		'attribute' => 'default',
+		                'format' => 'raw',
+		                'value' => function(Language $language) {
+            	            return Html::a(LanguageHelper::defaultLabel($language->default), ['set-default', 'id' => $language->id], [
+		                        'data' => [
+			                        'confirm' => Yii::t('languages', 'Are you sure you want to set this language as default?'),
+			                        'method' => 'post',
+		                        ],
+	                        ]);
+		                },
+		                'options' => ['style' => 'width: 150px;'],
+		                'contentOptions' => ['class' => 'text-center'],
+	                ],
+                    [
+                        'attribute' => 'title',
+                        'value' => function (Language $model) {
+                            return Html::a(Html::encode($model->title), ['view', 'id' => $model->id]);
+                        },
+                        'format' => 'raw',
+                    ],
+                    'name',
+	                [
+		                'attribute' => 'status',
+		                'filter' => LanguageHelper::statusList(),
+		                'format' => 'raw',
+		                'value' => function(Language $language) {
+			                return LanguageHelper::statusLabel($language->status);
+		                },
+		                'options' => ['style' => 'width: 150px;'],
+		                'contentOptions' => ['class' => 'text-center'],
+	                ],
+                    [
+                        'class' => ActionColumn::class,
+                        'options' => ['style' => 'width: 100px;'],
+                        'contentOptions' => ['class' => 'text-center'],
+                    ],
+                ],
+            ]); ?>
+        </div>
+    </div>
+</div>

common/modules/languages/views/manage/language/update.php

@@ -0,0 +1,18 @@
+<?php
+
+/* @var $this yii\web\View */
+/* @var $language \common\modules\languages\entities\Language */
+/* @var $model \common\modules\languages\forms\LanguageForm */
+
+$this->title = Yii::t('languages', 'Update Language: {name}', ['name' => $language->title]);
+$this->params['breadcrumbs'][] = ['label' => Yii::t('languages', 'Languages'), 'url' => ['index']];
+$this->params['breadcrumbs'][] = ['label' => $language->title, 'url' => ['view', 'id' => $language->id]];
+$this->params['breadcrumbs'][] = Yii::t('buttons', 'Editing');
+?>
+<div class="language-update">
+
+    <?= $this->render('_form', [
+        'model' => $model,
+    ]) ?>
+
+</div>

common/modules/languages/views/manage/language/view.php

@@ -0,0 +1,50 @@
+<?php
+
+use yii\helpers\Html;
+use yii\widgets\DetailView;
+use common\modules\languages\entities\Language;
+
+/* @var $this yii\web\View */
+/* @var $language Language */
+
+$this->title = $language->title;
+$this->params['breadcrumbs'][] = ['label' => Yii::t('languages', 'Languages'), 'url' => ['index']];
+$this->params['breadcrumbs'][] = $this->title;
+?>
+<div class="language-view">
+
+    <p>
+	    <?= Html::a(Yii::t('languages','Languages'), ['index'], ['class' => 'btn btn-default']) ?>
+        <?= Html::a(Yii::t('buttons', 'Edit'), ['update', 'id' => $language->id], ['class' => 'btn btn-primary']) ?>
+        <?= Html::a(Yii::t('buttons', 'Delete'), ['delete', 'id' => $language->id], [
+            'class' => 'btn btn-danger',
+            'data' => [
+                'confirm' => Yii::t('buttons', 'Are you sure you want to delete this item?'),
+                'method' => 'post',
+            ],
+        ]) ?>
+    </p>
+
+	<div class="row">
+		<div class="col-md-12">
+
+		    <div class="box">
+		        <div class="box-body">
+		            <?= DetailView::widget([
+		                'model' => $language,
+		                'attributes' => [
+		                    'id',
+		                    'title',
+			                'name',
+			                'status',
+			                'default'
+		                ],
+		            ]) ?>
+		        </div>
+		    </div>
+
+		</div>
+
+	</div>
+
+</div>

core/behaviors/LanguageBehavior.php

@@ -315,14 +315,14 @@ class LanguageBehavior extends Behavior
 
 	public function getTranslation($language = null)
 	{
-		$language = $language ?: \Yii::$app->language;
+		$language = $language ?: $this->defaultLanguage;
 		// if translate exists
 		$translate = $this->virtualClassName::find()
 			->andWhere([$this->relativeField => $this->owner->id])
 			->andWhere([$this->languageField => $language])
 			->one();
 
-		$language = $translate ? $language : \Yii::$app->params['defaultLanguage'];
+		$language = $translate ? $language : $this->defaultLanguage;
 
 		return $this->owner->hasOne($this->virtualClassName, [$this->relativeField => $this->ownerPrimaryKey])
 		                   ->where([$this->languageField => $language]);
@@ -330,7 +330,7 @@ class LanguageBehavior extends Behavior
 
 	public function findTranslation($language = null)
 	{
-		$language = $language ?: \Yii::$app->language;
+		$language = $language ?: $this->defaultLanguage;
 		//$class = call_user_func(array($this->virtualClassName, 'getInstance'));
 		return $this->virtualClassName::find()
             ->andWhere([$this->relativeField => $this->owner->id])