filter dropdown 无法保持选择状态问题

resources/views/filter/datetime.blade.php

@@ -4,7 +4,7 @@
             <a class="filter-group input-group-text bg-white dropdown-toggle" data-toggle="dropdown">
                 <span class="{{ $group_name }}-label">{{ $default['label'] }}&nbsp; </span>
             </a>
-            <input type="hidden" name="{{ $id }}_group" class="{{ $group_name }}-operation" value="0"/>
+            <input type="hidden" name="{{ $id }}_group" class="{{ $group_name }}-operation" value="{{ request($id.'_group', 0) }}"
             <ul class="dropdown-menu {{ $group_name }}">
                 @foreach($group as $index => $item)
                     <li class="dropdown-item"><a href="#" data-index="{{ $index }}"> {{ $item['label'] }} </a></li>

resources/views/filter/text.blade.php

@@ -4,7 +4,7 @@
             <a class="filter-group input-group-text bg-white dropdown-toggle" data-toggle="dropdown">
                 <span class="{{ $group_name }}-label">{{ $default['label'] }}&nbsp; </span>
             </a>
-            <input type="hidden" name="{{ $id }}_group" class="{{ $group_name }}-operation" value="0"/>
+            <input type="hidden" name="{{ $id }}_group" class="{{ $group_name }}-operation" value="{{ request($id.'_group', 0) }}"
             <ul class="dropdown-menu {{ $group_name }}">
                 @foreach($group as $index => $item)
                     <li class="dropdown-item"><a  data-index="{{ $index }}"> {{ $item['label'] }} </a></li>