Why bad request error 400?

Question

Yii

Here's the code that always worked, but now it doesn't.

public function actionDelete($id) {
        $this->loadModel($id)->delete();

        // if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
        if (!isset($_GET['ajax']))
            $this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('index'));
    }

Answer 1

Are you passing $id in the link?
if yii2 then check verb