title: Retrieve query params with Flask-RESTful
body: <p>I have a flask-RESTful endpoint defined by:</p>
  
  <pre><code>class SearchEvents(Resource):
      def get(self, name, start_date, end_date):
           #do stuff
  
  api.add_resource(endpoints.SearchEvents, '/events/&lt;string:name&gt;/&lt;string:start_date&gt;/&lt;string:end_date&gt;')
  </code></pre>
  
  <p>I'm testing it manually with Postman. I'd like to pass in null values for start_date and end_date. However:</p>
  
  <p><a href="https://i.stack.imgur.com/6W2CQ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/6W2CQ.png" alt="screenshot of postman interface"></a>
  I've tried modifying the url to:</p>
  
  <pre><code>http://127.0.0.1:5000/events/test/ /  #&lt;--Spaces
  </code></pre>
  
  <p>and</p>
  
  <pre><code>http://127.0.0.1:5000/events/test/""/""
  </code></pre>
  
  <p>To no avail. </p>