Alexander,
Thank you a bunch for your reply (again).
My problem is slightly different, and I think I have solved it as
follows. The problem is the difference between these two conditions. I
need to use them both, but separately as my code below shows.
if prevplace_id is None and nextplace_id is None:
if prevplace_id == '' and nextplace_id == '':
And btw, I finally took the step of adding a dummy application on my
development system which I named "test" that can use be used to test
this sort of question that has both python and html, because I could
not think of a way to make the gae interactive console handle such
situations.
**********main.py code below***********
import os
from os import environ
import logging
from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app
from google.appengine.ext.webapp import template
class MainPage(webapp.RequestHandler):
def get(self):
nextplace_id = self.request.get("nextplace", None)
prevplace_id = self.request.get("prevplace", None)
if prevplace_id is None and nextplace_id is None:
path = os.path.join(os.path.dirname(__file__),
'input.html')
template_values = {
'msg': 'None and None',
}
self.response.out.write(template.render(path,
template_values))
else:
if prevplace_id == '' and nextplace_id == '':
logging.info("nextplace_id: %s"%nextplace_id)
logging.info("prevplace_id: %s"%prevplace_id)
path = os.path.join(os.path.dirname(__file__),
'input.html')
template_values = {
'msg': 'Still, None and None',
}
self.response.out.write(template.render(path,
template_values))
else:
if nextplace_id is None :
#
logging.info("if nextplace_id: %s"%nextplace_id)
logging.info("if prevplace_id: %s"%prevplace_id)
else:
#
logging.info("else nextplace_id: %s"%nextplace_id)
logging.info("else prevplace_id: %s"%prevplace_id)
application = webapp.WSGIApplication(
[('/', MainPage),
],
debug=True)
def main():
run_wsgi_app(application)
if __name__ == "__main__":
main()
********** main.py code above***********
**********input.html code below***********
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://
www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<form method="get" action="/">
<input type="text" name="nextplace" value=""/>
<!--input type="text" name="nextplace" /-->
Next place (only Next or Prev, not both)
<br />
<input type="text" name="prevplace" value=""/>
<!--input type="text" name="prevplace" /-->
Prev place (only Next or Prev, not both)
<br />
<input type="submit" value="Submit" />
</form>
<br />
{{msg}}
</html>
********** input. html code above***********
**********app.yaml code below***********
application: test
version: 1
runtime: python
api_version: 1
handlers:
- url: /.*
script: main.py
********** app.yaml code above***********
Brian in Atlanta
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