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From: =?UTF-8?q?=E5=90=B4=E6=98=8A=E5=A4=A9?= <442384644@qq.com>
Date: Mon, 12 Oct 2026 10:33:00 +0800
Subject: [PATCH] =?UTF-8?q?fix(=E6=96=87=E7=AB=A0):=20=E4=BF=AE=E5=A4=8D?=
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---
 backend/app/services/article/ArticleServices.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/backend/app/services/article/ArticleServices.php b/backend/app/services/article/ArticleServices.php
index f2ebaa8dd..ecb3bc01a 100644
--- a/backend/app/services/article/ArticleServices.php
+++ b/backend/app/services/article/ArticleServices.php
@@ -109,8 +109,12 @@ class ArticleServices extends BaseService
      */
     public function read(int $id)
     {
-        $info = $this->dao->read($id);
+        // 模型属性赋值会按表字段类型回写（cid 为 varchar），(int) 强转必须放在 toArray 之后才生效，
+        // 否则详情返回字符串 cid，与分类树的数字 value 不一致导致编辑页级联选择器无法回显
+        $info = $this->dao->read($id)->toArray();
         $info['cid'] = (int)$info['cid'];
+        // 封面在表单内是单值字符串，模型获取器已将其拆为数组，此处归一回字符串避免提交时数组写 varchar 报错
+        $info['image_input'] = is_array($info['image_input']) ? ($info['image_input'][0] ?? '') : $info['image_input'];
         $info['content'] = htmlspecialchars_decode($info['content']);
         return compact('info');
     }