title: Avoiding other users, except the property owner accessing some specific urls in laravel
body: <p>Hello I have a laravel application with stripe payment gateway.</p>
  <pre><code>http://test.site/checkout/13
  </code></pre>
  <p>this is the url format where my users been asked to enter their card details and complete the payment.</p>
  <p>This 13 is the unique appid which is generating from the earlier step of the system (Users can create an app and each app has an appid)</p>
  <p>Now, My issue is any logged in user can access this url and even do a payment.</p>
  <p>How can I avoid this situation, how to enable this url only for the app owner and how to show an error message if some other user try to access this url?</p>