/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = SourceMessage::find()->joinWith(['messages']);
     $dataProvider = new ActiveDataProvider(['query' => $query]);
     $this->load($params);
     if (!$this->validate()) {
         // uncomment the following line if you do not want to return any records when validation fails
         // $query->where('0=1');
         return $dataProvider;
     }
     $query->andFilterWhere(['like', 'category', $this->category])->andFilterWhere(['like', 'message', $this->message]);
     $translations = array_filter((array) $this->translation);
     $or = ['or'];
     foreach ($translations as $key => $text) {
         $or[] = ['and', ['message.language' => $key], ['or like', 'message.translation', $text]];
     }
     $query->andWhere($or);
     return $dataProvider;
 }
 /**
  * @param string $category
  * @param string $message
  * @return null|SourceMessage
  */
 public static function get($category, $message)
 {
     $driver = Yii::$app->getDb()->getDriverName();
     $condition = $driver === 'mysql' ? '= BINARY' : '=';
     $sourceMessage = SourceMessage::find()->where(['category' => $category])->andWhere([$condition, 'message', $message])->one();
     return $sourceMessage;
 }
    /**
     * @param string $messagePath
     * @param string $category
     * @throws Exception
     * @throws InvalidConfigException
     * @throws \yii\base\Exception
     */
    public function actionExport($messagePath, $category = null)
    {
        $messagePath = realpath(Yii::getAlias($messagePath));
        if (!is_dir($messagePath)) {
            throw new Exception('The message path [[' . $messagePath . ']] is not a valid directory.');
        }
        /** @var SourceMessage[] $sourceMessages */
        $sourceMessages = SourceMessage::find()->filterWhere(['category' => $category])->with(['messages'])->asArray()->all();
        $messages = [];
        /** @var \metalguardian\i18n\components\I18n $i18n */
        $i18n = Yii::$app->getI18n();
        if (!$i18n instanceof I18n) {
            throw new InvalidConfigException(Module::t('I18n component have to be instance of metalguardian\\i18n\\components\\I18n'));
        }
        foreach ($sourceMessages as $sourceMessage) {
            $translations = $sourceMessage['messages'];
            foreach ($i18n->languages as $language) {
                $messages[$sourceMessage['category']][$language][$sourceMessage['message']] = isset($translations[$language]) && !empty($translations[$language]['translation']) ? $translations[$language]['translation'] : '';
            }
        }
        foreach ($messages as $category => $languages) {
            foreach ($languages as $language => $translations) {
                $fileName = FileHelper::normalizePath($messagePath . '/' . $language . '/' . $category) . '.php';
                if (!is_file($fileName)) {
                    $dir = dirname($fileName);
                    if (!FileHelper::createDirectory($dir)) {
                        throw new Exception('Directory [[' . $dir . ']] is not created');
                    }
                }
                ksort($translations);
                $array = VarDumper::export($translations);
                $content = <<<EOD
<?php
/**
 * Message translations.
 *
 * This file is automatically exported from database
 *
 * NOTE: this file must be saved in UTF-8 encoding.
 */
return {$array};

EOD;
                file_put_contents($fileName, $content);
                $this->stdout("Translation for category [[{$category}]] for language [[{$language}]] exported to the [[{$fileName}]].\n\n", Console::FG_GREEN);
            }
        }
    }