title: Flask & WTForms: How to make a form with multiple submit buttons?
body: <p>Imagine I need to build a travel planning form like this:</p>
  
  <pre><code>Going from [_Picadily_Circus____]
  Going to [_Marylebone_____]
  (Starting by) (Arriving by) [5]:[30][pm]
  </code></pre>
  
  <p>Both (Starting by) (Arriving by) are submit buttons. The example is artificial to show a two-button usecase so let's not discuss usability.</p>
  
  <p>How do I do this with Flask and WTForms?</p>
  
  <p>How to see which button was actually pressed?</p>