refactor: 进一步区分banner的pc与mobile

app/index/middleware/ConfirmRequestFrom.php

@@ -0,0 +1,25 @@
+<?php
+declare (strict_types = 1);
+
+namespace app\index\middleware;
+
+class ConfirmRequestFrom
+{
+    /**
+     * 处理请求
+     *
+     * @param \think\Request $request
+     * @param \Closure       $next
+     * @return Response
+     */
+    public function handle($request, \Closure $next)
+    {
+        // 确认请求来源
+        $request->from = 'pc';
+        if ($request->isMobile()) {
+            $request->from = 'mobile';
+        }
+        
+        return $next($request);
+    }
+}