Fixes #2209: When I18N message translation is missing source language is now used for formatting

framework/CHANGELOG.md

@@ -41,6 +41,7 @@ Yii Framework 2 Change Log
 - Bug #2084: AssetController adjusting CSS URLs declared at same line fixed (klimov-paul)
 - Bug #2091: `QueryBuilder::buildInCondition()` fails to handle array not starting with index 0 (qiangxue)
 - Bug #2160: SphinxQL does not support OFFSET (qiangxue, romeo7)
+- Bug #2209: When I18N message translation is missing source language is now used for formatting (samdark)
 - Bug #2212: `yii\gridview\DataColumn` generates incorrect labels when used with nosql DB and there is no data (qiangxue)
 - Bug #2298: Fixed the bug that Gii controller generator did not allow digit in the controller ID (qiangxue)
 - Bug #2303: Fixed the bug that `yii\base\Theme::pathMap` did not support dynamic update with path aliases (qiangxue)

framework/i18n/I18N.php

@@ -85,8 +85,13 @@ class I18N extends Component
 	 */
 	public function translate($category, $message, $params, $language)
 	{
-		$message = $this->getMessageSource($category)->translate($category, $message, $language);
-		return $this->format($message, $params, $language);
+		$messageSource = $this->getMessageSource($category);
+		$translation = $messageSource->translate($category, $message, $language);
+		if ($translation === false) {
+			return $this->format($message, $params, $messageSource->sourceLanguage);
+		} else {
+			return $this->format($translation, $params, $language);
+		}
 	}
 
 	/**

framework/i18n/MessageSource.php

@@ -78,14 +78,14 @@ class MessageSource extends Component
 	 * @param string $category the message category
 	 * @param string $message the message to be translated
 	 * @param string $language the target language
-	 * @return string the translated message (or the original message if translation is not needed)
+	 * @return string|boolean the translated message or false if translation wasn't found or isn't required
 	 */
 	public function translate($category, $message, $language)
 	{
 		if ($this->forceTranslation || $language !== $this->sourceLanguage) {
 			return $this->translateMessage($category, $message, $language);
 		} else {
-			return $message;
+			return false;
 		}
 	}
 
@@ -96,7 +96,7 @@ class MessageSource extends Component
 	 * @param string $category the category that the message belongs to
 	 * @param string $message the message to be translated
 	 * @param string $language the target language
-	 * @return string the translated message
+	 * @return string|boolean the translated message or false if translation wasn't found
 	 */
 	protected function translateMessage($category, $message, $language)
 	{
@@ -113,9 +113,7 @@ class MessageSource extends Component
 				'language' => $language,
 			]);
 			$this->trigger(self::EVENT_MISSING_TRANSLATION, $event);
-			return $this->_messages[$key] = $event->message;
-		} else {
-			return $message;
 		}
+		return false;
 	}
 }

framework/widgets/BaseListView.php

@@ -160,25 +160,31 @@ abstract class BaseListView extends Widget
 			$page = $pagination->getPage() + 1;
 			$pageCount = $pagination->pageCount;
 			if (($summaryContent = $this->summary) === null) {
-				$summaryContent = '<div class="summary">'
-					. Yii::t('yii', 'Showing <b>{begin, number}-{end, number}</b> of <b>{totalCount, number}</b> {totalCount, plural, one{item} other{items}}.')
+				return '<div class="summary">'
+					. Yii::t('yii', 'Showing <b>{begin, number}-{end, number}</b> of <b>{totalCount, number}</b> {totalCount, plural, one{item} other{items}}.', [
+						'begin' => $begin,
+						'end' => $end,
+						'count' => $count,
+						'totalCount' => $totalCount,
+						'page' => $page,
+						'pageCount' => $pageCount,
+					])
 					. '</div>';
 			}
 		} else {
 			$begin = $page = $pageCount = 1;
 			$end = $totalCount = $count;
 			if (($summaryContent = $this->summary) === null) {
-				$summaryContent = '<div class="summary">' . Yii::t('yii', 'Total <b>{count, number}</b> {count, plural, one{item} other{items}}.') . '</div>';
-			}
-		}
-		return Yii::$app->getI18n()->format($summaryContent, [
+				return '<div class="summary">' . Yii::t('yii', 'Total <b>{count, number}</b> {count, plural, one{item} other{items}}.', [
 					'begin' => $begin,
 					'end' => $end,
 					'count' => $count,
 					'totalCount' => $totalCount,
 					'page' => $page,
 					'pageCount' => $pageCount,
-		], Yii::$app->language);
+				]) . '</div>';
+			}
+		}
 	}
 
 	/**