diff --git a/src/ExportMenu.php b/src/ExportMenu.php
index 676fb16..637c18f 100644
--- a/src/ExportMenu.php
+++ b/src/ExportMenu.php
@@ -860,8 +860,13 @@ protected function initSettings()
         }
         $this->_columnSelectorEnabled = $this->showColumnSelector && $this->asDropdown;
         $request = Yii::$app->request;
-        $this->_triggerDownload = $request->post($this->exportRequestParam, $this->triggerDownload);
-        $this->_exportType = $request->post($this->exportTypeParam, $this->exportType);
+        if ($request instanceof \yii\web\Request) {
+          $this->_triggerDownload = $request->post($this->exportRequestParam, $this->triggerDownload);
+          $this->_exportType = $request->post($this->exportTypeParam, $this->exportType);
+        } else {
+            $this->_triggerDownload = $this->triggerDownload;
+            $this->_exportType = $this->exportType;
+        }
         if (!$this->stream) {
             $this->target = self::TARGET_SELF;
         }
@@ -869,7 +874,9 @@ protected function initSettings()
             if ($this->stream) {
                 Yii::$app->controller->layout = false;
             }
-            $this->_columnSelectorEnabled = $request->post($this->colSelFlagParam, $this->_columnSelectorEnabled);
+            $this->_columnSelectorEnabled = $request instanceof \yii\web\Request ?
+                $request->post($this->colSelFlagParam, $this->_columnSelectorEnabled) :
+                $this->_columnSelectorEnabled;
             $this->initSelectedColumns();
         }
         if ($this->dynagrid) {