diff --git a/plugins/baser-core/src/Utility/BcFileUploader.php b/plugins/baser-core/src/Utility/BcFileUploader.php
index 8dc12f8be6..32ab4611bb 100644
--- a/plugins/baser-core/src/Utility/BcFileUploader.php
+++ b/plugins/baser-core/src/Utility/BcFileUploader.php
@@ -909,17 +909,20 @@ public function getUniqueFileName(array $setting, array $file, EntityInterface $
      * 保存先のフォルダを設定し、取得する
      * @param bool $isTheme
      * @param bool $limited
-     * @return string
+     * @return string|bool
      * @checked
      * @noTodo
      * @unitTest
      */
-    public function getSaveDir(bool $isTheme = false, bool $limited = false): string
+    public function getSaveDir(bool $isTheme = false, bool $limited = false): bool|string
     {
         if (!$isTheme) {
             $basePath = WWW_ROOT . 'files' . DS;
         } else {
             $request = Router::getRequest();
+
+            if (is_null($request)) return false;
+
             $site = $request->getAttribute('currentSite');
             if ($site && $site->theme) {
                 $basePath = ROOT . DS . 'plugins' . DS . $site->theme . DS . 'webroot' . DS . 'files' . DS;
diff --git a/plugins/baser-core/src/Utility/BcUtil.php b/plugins/baser-core/src/Utility/BcUtil.php
index 6beedf5635..4d2c944857 100644
--- a/plugins/baser-core/src/Utility/BcUtil.php
+++ b/plugins/baser-core/src/Utility/BcUtil.php
@@ -1175,8 +1175,14 @@ public static function getCurrentTheme()
         $theme = Inflector::camelize(Inflector::underscore(Configure::read('BcApp.coreFrontTheme')));
         if (!BcUtil::isInstalled()) return $theme;
         $request = Router::getRequest();
-        /** @var Site $site */
-        $site = $request->getAttribute('currentSite');
+
+        if (is_null($request))
+            $site = null;
+        else{
+            /** @var Site $site */
+            $site = $request->getAttribute('currentSite');
+        }
+
         if ($site) {
             if($site->theme) {
                 return $site->theme;
diff --git a/plugins/baser-core/src/View/Helper/BcUploadHelper.php b/plugins/baser-core/src/View/Helper/BcUploadHelper.php
index ef5dfc05ef..f79973f212 100755
--- a/plugins/baser-core/src/View/Helper/BcUploadHelper.php
+++ b/plugins/baser-core/src/View/Helper/BcUploadHelper.php
@@ -328,7 +328,7 @@ public function uploadImage($fieldName, $entity, $options = [])
         $fileUrl = $this->getBasePath($settings);;
         $fileUrlInTheme = $this->getBasePath($settings, true);
         $saveDir = $this->table->getSaveDir(false, $options['limited']);
-        $saveDirInTheme = $this->table->getSaveDir(true, $options['limited']);
+        $saveDirInTheme = $this->table->getSaveDir(true, $options['limited']) ?? '';
 
         $settingField = $fieldName;
         if(strpos($fieldName, '.') !== false) {
diff --git a/plugins/bc-blog/src/Model/Entity/BlogPost.php b/plugins/bc-blog/src/Model/Entity/BlogPost.php
index feb29a268b..ff757a48ca 100755
--- a/plugins/bc-blog/src/Model/Entity/BlogPost.php
+++ b/plugins/bc-blog/src/Model/Entity/BlogPost.php
@@ -14,8 +14,10 @@
 use BaserCore\Annotation\UnitTest;
 use BaserCore\Annotation\NoTodo;
 use BaserCore\Annotation\Checked;
+use BcBlog\View\Helper\BlogHelper;
 use Cake\I18n\FrozenTime;
 use Cake\ORM\Entity;
+use Cake\View\View;
 
 /**
  * Class BlogPost
@@ -53,4 +55,20 @@ class BlogPost extends Entity
         'id' => false
     ];
 
+    /**
+     * アイキャッチのフルパス
+     */
+    protected $_virtual = ['_eyecatch'];
+
+    /**
+     * アイキャッチのフルパスを取得
+     * @return string
+     * @checked
+     * @noTodo
+     * @unitTest
+     */
+    protected function _get_eyecatch(){
+        $BlogHelper = new BlogHelper(new View());
+        return $BlogHelper->getEyeCatch($this, ['output' => 'url']);
+    }
 }
diff --git a/plugins/bc-blog/src/View/Helper/BlogHelper.php b/plugins/bc-blog/src/View/Helper/BlogHelper.php
index 789a812808..d295ec90ac 100755
--- a/plugins/bc-blog/src/View/Helper/BlogHelper.php
+++ b/plugins/bc-blog/src/View/Helper/BlogHelper.php
@@ -122,6 +122,7 @@ public function __construct(View $view, array $config = [])
     public function setContent($blogContentId = null)
     {
         $blogContentUpdated = false;
+        $content = false;
         if (empty($this->currentBlogContent) || ($blogContentId != $this->currentBlogContent->id)) {
             if ($blogContentId) {
                 if ($this->_View->getRequest()->getQuery('preview') == 'default' && $this->_View->getRequest()->getData()) {
diff --git a/plugins/bc-blog/tests/TestCase/Controller/Api/BlogPostsControllerTest.php b/plugins/bc-blog/tests/TestCase/Controller/Api/BlogPostsControllerTest.php
index 73573ea4b1..dd162f99ab 100755
--- a/plugins/bc-blog/tests/TestCase/Controller/Api/BlogPostsControllerTest.php
+++ b/plugins/bc-blog/tests/TestCase/Controller/Api/BlogPostsControllerTest.php
@@ -11,6 +11,7 @@
 
 namespace BcBlog\Test\TestCase\Controller\Api;
 
+use BaserCore\Test\Factory\ContentFactory;
 use BaserCore\Test\Factory\PermissionFactory;
 use BaserCore\Test\Scenario\InitAppScenario;
 use BaserCore\TestSuite\BcTestCase;
@@ -91,7 +92,8 @@ public function test_view()
     {
         // データを生成
         $this->loadFixtureScenario(BlogContentScenario::class, 1, 1, null, 'test', '/test');
-        BlogPostFactory::make(['id' => '1', 'blog_content_id' => '1', 'title' => 'blog post', 'status' => true])->persist();
+        BlogPostFactory::make(['id' => '1', 'blog_content_id' => '1', 'title' => 'blog post', 'eye_catch' => 'eye_catch.img', 'status' => true])->persist();
+        ContentFactory::make(['type' => 'BlogContent', 'entity_id' => 1])->persist();
         PermissionFactory::make()->allowGuest('/baser/api/*')->persist();
 
         // APIを呼ぶ
@@ -101,6 +103,7 @@ public function test_view()
         // 戻り値を確認
         $result = json_decode((string)$this->_response->getBody());
         $this->assertEquals(1, $result->blogPost->id);
+        $this->assertTextContains('/files/blog/1/blog_posts/eye_catch.img', $result->blogPost->_eyecatch);
         $this->assertEquals(1, $result->blogPost->blog_content_id);
 
         //存在しないBlogPostIDをテスト場合、
diff --git a/plugins/bc-blog/tests/TestCase/Model/Entity/BlogPostTest.php b/plugins/bc-blog/tests/TestCase/Model/Entity/BlogPostTest.php
new file mode 100644
index 0000000000..d01dec5fc3
--- /dev/null
+++ b/plugins/bc-blog/tests/TestCase/Model/Entity/BlogPostTest.php
@@ -0,0 +1,74 @@
+<?php
+/**
+ * baserCMS :  Based Website Development Project <https://basercms.net>
+ * Copyright (c) NPO baser foundation <https://baserfoundation.org/>
+ *
+ * @copyright     Copyright (c) NPO baser foundation
+ * @link          https://basercms.net baserCMS Project
+ * @since         5.0.0
+ * @license       https://basercms.net/license/index.html MIT License
+ */
+
+namespace BcBlog\Test\TestCase\Model\Entity;
+
+use BaserCore\TestSuite\BcTestCase;
+use BcBlog\Model\Entity\BlogPost;
+use BcBlog\Test\Scenario\BlogContentScenario;
+use CakephpFixtureFactories\Scenario\ScenarioAwareTrait;
+
+/**
+ * Class BlogPostTest
+ */
+class BlogPostTest extends BcTestCase
+{
+    /**
+     * Trait
+     */
+    use ScenarioAwareTrait;
+
+    /**
+     * @var BlogPost
+     */
+    public $BlogPost;
+
+    /**
+     * Set Up
+     *
+     * @return void
+     */
+    public function setUp(): void
+    {
+        parent::setUp();
+        $this->BlogPost = $this->getTableLocator()->get('BlogPost.BlogPosts');
+    }
+
+    /**
+     * Tear Down
+     *
+     * @return void
+     */
+    public function tearDown(): void
+    {
+        unset($this->BlogPost);
+        parent::tearDown();
+    }
+
+    /**
+     * test _get_eyecatch
+     */
+    public function test_get_eyecatch()
+    {
+        $this->loadFixtureScenario(BlogContentScenario::class, 1, 1, null, 'test', '/test');
+        $blogPost = new BlogPost([
+            'id' => 1,
+            'blog_content_id' => 1,
+            'no' => 1,
+            'title' => 'blog post title',
+            'status' => true,
+            'eye_catch' => 'test.png'
+        ]);
+        $_eyecatch = $this->execPrivateMethod($blogPost, '_get_eyecatch', []);
+        $this->assertTextContains('/files/blog/1/blog_posts/test.png', $_eyecatch);
+    }
+
+}