12 February 2009 ~ Comments Off

Handling Web Forms Google App Engine

Development Python

If we want users to be able to post their own greetings, we need a way to process information submitted by the user with a web form. The webapp framework makes processing form data easy.

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class MainPage(webapp.RequestHandler):
  def get(self):
    self.response.out.write("""
      <html>
        <body>
          <form action="/sign" method="post">
            <div><textarea name="content" rows="3" cols="60"></textarea></div>
            <div><input type="submit" value="Sign Guestbook"></div>
          </form>
        </body>
      </html>""")

Now lets pull the data out of the post…

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class Guestbook(webapp.RequestHandler):
  def post(self):
    self.response.out.write('<html><body>You wrote:<em>')
    self.response.out.write(cgi.escape(self.request.get('content')))
    self.response.out.write('</em></body></html>')

By using self.request.get(‘content’) i can get the post data from the field “content”. Easy right?

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