baserproject · kaburk · Jun 2, 2026
diff --git a/plugins/BcColumn/templates/plugin/BcMail/Mail/default/confirm.php b/plugins/BcColumn/templates/plugin/BcMail/Mail/default/confirm.php
@@ -3,7 +3,11 @@
  * メールフォーム確認ページ
  */
 $this->BcBaser->css('admin/jquery-ui/jquery-ui.min', true);
-$this->BcBaser->js(array('vendor/jquery-ui-1.11.4.min', 'vendor/i18n/ui.datepicker-ja'), false);
+$jsFiles = ['vendor/jquery-ui-1.11.4.min'];
+if ($this->BcBaser->isJapaneseLocale()) {
+	$jsFiles[] = 'vendor/i18n/ui.datepicker-ja';
+}
+$this->BcBaser->js($jsFiles, false);
 if ($freezed) {
 	$this->Mailform->freeze();
 }

diff --git a/plugins/BcColumn/templates/plugin/BcMail/Mail/default/index.php b/plugins/BcColumn/templates/plugin/BcMail/Mail/default/index.php
@@ -3,7 +3,11 @@
  * メールフォーム
  */
 $this->BcBaser->css('admin/jquery-ui/jquery-ui.min', true);
-$this->BcBaser->js(array('vendor/jquery-ui-1.11.4.min', 'vendor/i18n/ui.datepicker-ja'), false);
+$jsFiles = ['vendor/jquery-ui-1.11.4.min'];
+if ($this->BcBaser->isJapaneseLocale()) {
+	$jsFiles[] = 'vendor/i18n/ui.datepicker-ja';
+}
+$this->BcBaser->js($jsFiles, false);
 ?>
 
 

diff --git a/plugins/BcThemeSample/templates/layout/default.php b/plugins/BcThemeSample/templates/layout/default.php
@@ -18,9 +18,13 @@
 $request = $this->getRequest();
 $attributes = $request->getAttributes();
 $base = $attributes['base'];
+$jsFiles = [];
+if ($this->BcBaser->isJapaneseLocale()) {
+	$jsFiles[] = 'vendor/i18n/ui.datepicker-ja';
+}
 ?>
 <!DOCTYPE html>
-<html>
+<html lang="<?= h($this->BcBaser->getHtmlLang()) ?>">
 <head>
 	<?php $this->BcBaser->charset() ?>
 	<meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1.0">
@@ -35,14 +39,13 @@
 		'editor'
 	]) ?>
   <?= $this->BcBaser->declarationI18n() ?>
-	<?php $this->BcBaser->js([
+	<?php $this->BcBaser->js(array_merge([
 		'vendor/jquery-1.11.3.min',
 		'vendor/jquery-ui-1.11.4.min',
 		'vendor/jquery.bxslider-4.12.min',
 		'vendor/jquery.colorbox-1.6.1.min',
-		'vendor/i18n/ui.datepicker-ja',
 		'vendor/jquery-accessibleMegaMenu',
-	]); ?>
+	], $jsFiles)); ?>
   <?php $this->BcBaser->js('common.bundle', true, [
 	  'id' => 'AdminScript',
     'data-baseUrl' => h($base),

diff --git a/plugins/baser-core/resources/locales/en/baser_core.mo b/plugins/baser-core/resources/locales/en/baser_core.mo
diff --git a/plugins/baser-core/resources/locales/en/baser_core.po b/plugins/baser-core/resources/locales/en/baser_core.po
@@ -8577,7 +8577,7 @@ msgstr "Table"
 
 #: plugins/bc-admin-third/templates/plugin/BcCustomContent/Admin/element/CustomContents/form.php:54
 msgid "テーブルを選択してください"
-msgstr "SPlease select Table"
+msgstr "Please select Table"
 
 #: plugins/bc-admin-third/templates/plugin/BcCustomContent/Admin/element/CustomContents/form.php:58
 msgid "コンテンツに紐付けるテーブルを選択します。"
@@ -9882,7 +9882,7 @@ msgstr "Received Emails"
 
 #: plugins/bc-admin-third/templates/plugin/BcMail/Admin/element/Dashboard/mail_messages.php:34
 msgid "{0} 件"
-msgstr "%s Items"
+msgstr "{0} Items"
 
 #: plugins/bc-admin-third/templates/plugin/BcMail/Admin/element/MailContents/form.php:27
 msgid "メールフォーム説明文"
@@ -15099,15 +15099,10 @@ msgstr "Widgets"
 #~ msgid "更新日に不正な文字列が入っています。"
 #~ msgstr "There are invalid strings in Update Date."
 
-#, fuzzy
-#~| msgid "PHPの構文エラーが発生しました。"
-#~ msgid "草稿欄でPHPの構文エラーが発生しました。"
-#~ msgstr "PHP syntax error occured."
-
 #~ msgid "PHPの構文エラーが発生しました。"
 #~ msgstr "PHP syntax error occured."
 
-#, fuzzy
+#~#, fuzzy
 #~| msgid "このURLの登録は許可されていません。"
 #~ msgid "スクリプトの入力は許可されていません。"
 #~ msgstr "This URL's registration is not allowed."

diff --git a/plugins/baser-core/src/Utility/BcUtil.php b/plugins/baser-core/src/Utility/BcUtil.php
@@ -2317,4 +2317,34 @@ public static function isDevelopmentVersion(): bool
         return is_dir(ROOT . DS . 'plugins' . DS . 'baser-core');
     }
 
+    /**
+     * locale から言語コードを取得する
+     *
+     * @param string|null $locale
+     * @param string $default
+     * @return string
+     * @checked
+     * @noTodo
+     * @unitTest
+     */
+    public static function getLocaleLanguageCode(?string $locale = null, string $default = 'ja'): string
+    {
+        $locale = strtolower((string) ($locale ?? \Cake\I18n\I18n::getLocale()));
+        return preg_replace('/[_-].*$/', '', $locale) ?: $default;
+    }
+
+    /**
+     * 現在の locale が日本語かどうか判定する
+     *
+     * @param string|null $locale
+     * @return bool
+     * @checked
+     * @noTodo
+     * @unitTest
+     */
+    public static function isJapaneseLocale(?string $locale = null): bool
+    {
+        return self::getLocaleLanguageCode($locale) === 'ja';
+    }
+
 }
diff --git a/plugins/baser-core/src/View/Helper/BcBaserHelper.php b/plugins/baser-core/src/View/Helper/BcBaserHelper.php
@@ -2885,4 +2885,30 @@ public function getFullUrl(string $url): string
         return BcUtil::fullUrl($url);
     }
 
+    /**
+     * html の lang 属性に使う言語コードを取得する
+     *
+     * @return string
+     * @checked
+     * @noTodo
+     * @unitTest
+     */
+    public function getHtmlLang(): string
+    {
+        return BcUtil::getLocaleLanguageCode();
+    }
+
+    /**
+     * 現在の locale が日本語かどうか判定する
+     *
+     * @return bool
+     * @checked
+     * @noTodo
+     * @unitTest
+     */
+    public function isJapaneseLocale(): bool
+    {
+        return BcUtil::isJapaneseLocale();
+    }
+
 }
diff --git a/plugins/baser-core/src/View/Helper/BcCkeditorHelper.php b/plugins/baser-core/src/View/Helper/BcCkeditorHelper.php
@@ -11,6 +11,7 @@
 
 namespace BaserCore\View\Helper;
 
+use BaserCore\Utility\BcUtil;
 use Cake\Core\Plugin;
 use Cake\View\Helper;
 use Cake\Utility\Inflector;
@@ -207,8 +208,21 @@ public function initialize($config): void
      */
     protected function build($fieldName, $options = [])
     {
+        static $langExistsCache = [];
+
+        $editorLanguage = BcUtil::getLocaleLanguageCode();
+
+        if (!isset($langExistsCache[$editorLanguage])) {
+            // CKEditor の言語JSがない場合、要求すると 404 で初期化が失敗するため ja にフォールバック
+            $editorLanguagePath = Plugin::path('BcAdminThird') . 'webroot' . DS . 'js' . DS . 'vendor' . DS . 'ckeditor' . DS . 'lang' . DS . $editorLanguage . '.js';
+            $langExistsCache[$editorLanguage] = file_exists($editorLanguagePath);
+        }
+        if (!$langExistsCache[$editorLanguage]) {
+            $editorLanguage = 'ja';
+        }
+
         $options = array_merge([
-            'editorLanguage' => 'ja', // 言語
+            'editorLanguage' => $editorLanguage, // 言語
             'editorSkin' => 'moono', // スキン
             'editorToolType' => 'normal', // ツールバータイプ
             'editorToolbar' => [], // ツールバータイプ

diff --git a/plugins/baser-core/tests/TestCase/Utility/BcUtilTest.php b/plugins/baser-core/tests/TestCase/Utility/BcUtilTest.php
@@ -179,6 +179,27 @@ public static function isInstallModeDataProvider()
         ];
     }
 
+    /**
+     * locale から言語コードを取得する
+     */
+    public function testGetLocaleLanguageCode(): void
+    {
+        $this->assertSame('ja', BcUtil::getLocaleLanguageCode('ja_JP'));
+        $this->assertSame('en', BcUtil::getLocaleLanguageCode('en_US'));
+        $this->assertSame('fr', BcUtil::getLocaleLanguageCode('fr-FR'));
+        $this->assertSame('ja', BcUtil::getLocaleLanguageCode('', 'ja'));
+    }
+
+    /**
+     * 日本語 locale かどうか判定する
+     */
+    public function testIsJapaneseLocale(): void
+    {
+        $this->assertTrue(BcUtil::isJapaneseLocale('ja_JP'));
+        $this->assertTrue(BcUtil::isJapaneseLocale('ja'));
+        $this->assertFalse(BcUtil::isJapaneseLocale('en_US'));
+    }
+
     /**
      * Test getVersion
      * @return void
@@ -1545,7 +1566,7 @@ public function testIsSameReferrerAsCurrent($referer, $expected)
     public static function isSameReferrerAsCurrentDataProvider()
     {
         return [
-            // refererがnullの場合　
+            // refererがnullの場合
             [null, false],
             // referer!=$siteDomainの場合
             ["/baser/admin", false],

diff --git a/plugins/baser-core/tests/TestCase/View/Helper/BcBaserHelperTest.php b/plugins/baser-core/tests/TestCase/View/Helper/BcBaserHelperTest.php
@@ -458,6 +458,34 @@ public function testI18nScript()
         $this->assertStringContainsString($encoded2, $result);
     }
 
+    /**
+     * html lang 用の言語コードを取得する
+     */
+    public function testGetHtmlLang(): void
+    {
+        $originalLocale = \Cake\I18n\I18n::getLocale();
+        try {
+            \Cake\I18n\I18n::setLocale('ja_JP');
+            $this->assertSame('ja', $this->BcBaser->getHtmlLang());
+        } finally {
+            \Cake\I18n\I18n::setLocale($originalLocale);
+        }
+    }
+
+    /**
+     * 現在の locale が日本語かどうか判定する
+     */
+    public function testIsJapaneseLocale(): void
+    {
+        $originalLocale = \Cake\I18n\I18n::getLocale();
+        try {
+            \Cake\I18n\I18n::setLocale('ja_JP');
+            $this->assertTrue($this->BcBaser->isJapaneseLocale());
+        } finally {
+            \Cake\I18n\I18n::setLocale($originalLocale);
+        }
+    }
+
     /**
      * Test BcBaser->flashが適切なflashメッセージを出力してるかテスト
      *

diff --git a/plugins/baser-core/tests/TestCase/View/Helper/BcCkeditorHelperTest.php b/plugins/baser-core/tests/TestCase/View/Helper/BcCkeditorHelperTest.php
@@ -14,6 +14,8 @@
 use BaserCore\View\BcAdminAppView;
 use BaserCore\TestSuite\BcTestCase;
 use BaserCore\View\Helper\BcCkeditorHelper;
+use Cake\Core\Plugin;
+use Cake\I18n\I18n;
 use CakephpFixtureFactories\Scenario\ScenarioAwareTrait;
 
 /**
@@ -111,6 +113,50 @@ public function testBuild()
         $this->assertMatchesRegularExpression('/let config = JSON\.parse\(\'\{"ckeditorField/', $jsResult);
     }
 
+    /**
+     * Test build locale-aware editor language
+     */
+    public function testBuildEditorLanguageByLocale()
+    {
+        $this->BcCkeditor->getView()->setTheme('BcAdminThird');
+        $request = $this->BcCkeditor->getView()->getRequest()->withAttribute('formTokenData', ['dummy']);
+        $this->BcCkeditor->getView()->setRequest($request);
+        $this->BcCkeditor->BcAdminForm->create();
+
+        $originalLocale = I18n::getLocale();
+        try {
+            I18n::setLocale('en_US');
+            $this->execPrivateMethod($this->BcCkeditor, 'build', ['Page.contents', []]);
+            $jsResult = $this->BcCkeditor->getView()->fetch('script');
+            $editorLanguagePath = Plugin::path('BcAdminThird') . 'webroot' . DS . 'js' . DS . 'vendor' . DS . 'ckeditor' . DS . 'lang' . DS . 'en.js';
+            $this->assertFileExists($editorLanguagePath);
+            $this->assertStringContainsString('"language":"en"', $jsResult);
+        } finally {
+            I18n::setLocale($originalLocale);
+        }
+    }
+
+    /**
+     * Test build falls back to ja for unsupported locale
+     */
+    public function testBuildEditorLanguageFallbackToJa()
+    {
+        $this->BcCkeditor->getView()->setTheme('BcAdminThird');
+        $request = $this->BcCkeditor->getView()->getRequest()->withAttribute('formTokenData', ['dummy']);
+        $this->BcCkeditor->getView()->setRequest($request);
+        $this->BcCkeditor->BcAdminForm->create();
+
+        $originalLocale = I18n::getLocale();
+        try {
+            I18n::setLocale('fr_FR');
+            $this->execPrivateMethod($this->BcCkeditor, 'build', ['Page.contents', []]);
+            $jsResult = $this->BcCkeditor->getView()->fetch('script');
+            $this->assertStringContainsString('"language":"ja"', $jsResult);
+        } finally {
+            I18n::setLocale($originalLocale);
+        }
+    }
+
     /**
      * Test setEditorToolbar
      */

diff --git a/plugins/bc-admin-third/templates/Admin/layout/default.php b/plugins/bc-admin-third/templates/Admin/layout/default.php
@@ -24,9 +24,14 @@
 $request = $this->getRequest();
 $attributes = $request->getAttributes();
 $base = $attributes['base'];
+$jsFiles = [];
+if ($this->BcBaser->isJapaneseLocale()) {
+  $jsFiles[] = 'vendor/i18n/ui.datepicker-ja';
+  $jsFiles[] = 'vendor/jquery.validate_ja';
+}
 ?>
 <!DOCTYPE html>
-<html lang="ja">
+<html lang="<?= h($this->BcBaser->getHtmlLang()) ?>">
 <head>
   <meta charset="UTF-8">
   <meta name="robots" content="noindex,nofollow"/>
@@ -68,18 +73,16 @@
     'bcConfirmAlertMessage1' => __d('baser_core', 'メッセージを指定してください。'),
     'bcConfirmAlertMessage2' => __d('baser_core', 'コールバック処理が登録されていません。')
   ], ['block' => false]) ?>
-    <?php $this->BcBaser->js([
+  <?php $this->BcBaser->js(array_merge([
     'admin/vendor.bundle',
     'vendor/jquery-3.5.1.min',
     'vendor/jquery.bt.min',
     'vendor/jquery-contextMenu-2.2.0/jquery.contextMenu.min',
     'vendor/jquery-ui-1.13.0.min',
-    'vendor/i18n/ui.datepicker-ja',
     'vendor/jquery.validate.1.19.3.min',
-    'vendor/jquery.validate_ja',
     'vendor/jquery.form-2.94',
     'vendor/jquery.timepicker'
-  ]) ?>
+  ], $jsFiles)) ?>
   <?php $this->BcBaser->js('admin/common.bundle', true, [
     'id' => 'AdminScript',
     'data-baseUrl' => h($base),

diff --git a/plugins/bc-admin-third/templates/Admin/layout/error.php b/plugins/bc-admin-third/templates/Admin/layout/error.php
@@ -1,5 +1,11 @@
+<?php
+$jsFiles = [];
+if ($this->BcBaser->isJapaneseLocale()) {
+  $jsFiles[] = 'vendor/i18n/ui.datepicker-ja';
+}
+?>
 <!DOCTYPE html>
-<html lang="ja">
+<html lang="<?= h($this->BcBaser->getHtmlLang()) ?>">
 <head>
   <meta charset="UTF-8">
   <meta name="robots" content="noindex,nofollow"/>
@@ -12,15 +18,14 @@
     'admin/style',
   ]) ?>
   <?php echo $this->fetch('css') ?>
-  <?php $this->BcBaser->js([
+  <?php $this->BcBaser->js(array_merge([
     'admin/vendor.bundle',
     'vendor/vue.min',
     'vendor/jquery-3.5.1.min',
     'vendor/jquery.bt.min',
-    'vendor/jquery-ui-1.11.4.min.js',
-    'vendor/i18n/ui.datepicker-ja',
+    'vendor/jquery-ui-1.13.0.min',
     'vendor/jquery.timepicker',
-  ]) ?>
+  ], $jsFiles)) ?>
   <?php echo $this->fetch('script') ?>
 </head>
 

diff --git a/plugins/bc-admin-third/webroot/js/vendor/ckeditor/lang/en.js b/plugins/bc-admin-third/webroot/js/vendor/ckeditor/lang/en.js