add：报名

application/admin/view/general/attachment/select.html

@@ -11,7 +11,7 @@
             {foreach name="categoryList" item="vo"}
             <li><a href="#t-{$key|htmlentities}" data-value="{$key|htmlentities}" data-toggle="tab">{$vo|htmlentities}</a></li>
             {/foreach}
-            {if stripos(request()->get('mimetype'),'image/')===false}
+            {if stripos((string)request()->get('mimetype'),'image/')===false}
             <li class="pull-right dropdown filter-type">
                 <a href="javascript:" class="dropdown-toggle" data-toggle="dropdown"><i class="fa fa-filter"></i> {:__('Filter Type')}</a>
                 <ul class="dropdown-menu text-left" role="menu">