搜索页获取pdf链接更改

public/themes/website/1/zh/demo/single_search.html

@@ -144,7 +144,23 @@
           $sr_cid = $vo['category_id'] ?? ($vo['category'][0]['id'] ?? 0);
           $sr_thumb = is_array($vo['thumbnail'] ?? null) ? ($vo['thumbnail']['url'] ?? '') : '';
           $sr_url = hcUrl('detail/index', ['id' => $vo['id'], 'cid' => $sr_cid]);
-          $sr_file = trim((string)($vo['url'] ?? ''));
+          // PDF文件链接从 hc_article.resource_download 获取（多附件字段，存的是附件ID的JSON数组）
+          $sr_file = '';
+          if (($vo['sr_kind'] ?? '') === 'download') {
+            $articleRow = \think\facade\Db::table('hc_article')->where('sub_id', $vo['id'])->field('resource_download')->find();
+            if (!empty($articleRow['resource_download'])) {
+              $attachIds = json_decode($articleRow['resource_download'], true);
+              if (is_array($attachIds) && !empty($attachIds)) {
+                $firstAttach = \think\facade\Db::table('hc_attachment')->where('id', intval($attachIds[0]))->field('url')->find();
+                if (!empty($firstAttach['url'])) {
+                  $sr_file = trim($firstAttach['url']);
+                }
+              }
+            }
+          }
+          if ($sr_file === '') {
+            $sr_file = trim((string)($vo['url'] ?? ''));
+          }
           $has_sr_file = $sr_file !== '';
           $sr_title = $vo['title'] ?? '';
           $sr_type_name = $vo['sr_tab_name'] ?? '内容';