refactor: 视频分类默认选中问题

app/index/controller/Attachment.php

@@ -111,7 +111,7 @@ class Attachment extends Common
             ])
             ->withSearch(['name'], ['name' => $param['keyword']??null])
             ->language($this->lang_id)
-            ->category($param['id']??null)
+            ->category($param['id']??$video_categorys[0]['id']??null)
             ->order(['sort' => 'asc', 'id' => 'desc'])
             ->paginate([
                 'list_rows' => $param['size'],

app/index/view/attachment/video.html

@@ -36,8 +36,8 @@
                 {notempty name="video_categorys"}
                 <div class="hd">
                     <ul>
-                        {volist name="video_categorys" id="vca"}
-                        <li class="vli {eq name='vca.id' value='$Request.get.id'}von{/eq}">
+                        {volist name="video_categorys" id="vca" key="k"}
+                        <li class="vli {if condition='($Request.has.id && $Request.get.id==$vca.id) || (!$Request.has.id && $k==1)'}von{/if}">
                             <a href="{:url('attachment/video', ['id' => $vca.id])}" style="display: block;">{$vca.name}</a>
                         </li>
                         {/volist}