Having received no replies, let me say a little more.
If I add the following line into the beginning of function process
(form),
the POST does successfully POST the value of place, but the
values of all the other hidden form inputs are *not* POSTED. And
I cannot add lines like the following one for the other hidden form
inputs because they are not known and must be taken from the
user's map settings.
form.place.value = String({{place|addslashes}});
Perhaps I should have included the following html code in the original
posting, too. (The map is dragged about --recentered-- and zoomed
by the user, so these initial settings are revised before the form
is POSTed).
*******************more relevant html code below******************
var map = new GMap2(document.getElementById("map"),
{draggableCursor:"default"});
map.addControl(new GLargeMapControl());
map.setCenter(new GLatLng(24.21,-41.48), 2);
*******************more relevant html code above******************
Here is another critical piece of information. If I replace the
following
line in process(form) with the second line below, I still get an
error
message that center_lat is an empty string. So it appears that the
POST method is not working the way I have it constructed.
form.center_lat.value = String(map.getCenter().lat());
form.center_lat.value = String(34);
Please help with this POST problem.
Brian in Atlanta
On Jan 2, 9:03 am, thebrianschott <[email protected]> wrote:
> I cannot retrieve the value of the variable "g_place" in the following
> python script back from "add_place.html". "g_place" is effectively
> sent to "add_place.html" in the "def get(self)" section of class
> AddPlace, but "g_place" is not returned to the python script in the
> "def post(self)" section of class AddPlace. "g_place" is sent to
> "add_place.html" and placed in the var "iwform" with the phrase
> {{place|escape}}.
>
> (I hope I have provided enough information. I am reluctant to upload
> this buggy version to GAE, so I cannot just provide a link. Please
> advise if there is another protocol/procedure I should be using to
> provide the code as a link.)
>
> Thanks,
>
> Brian in Atlanta
>
> *******************relevant python code below******************
> class MainPage(webapp.RequestHandler):
> def get(self):
> place_id = self.request.get("place", None)
>
> place= Group(key_name=place_id)
> place.place = place_id
> place.user = user
> place.put()
> key = db.Key.from_path("Group", place_id)
> path = os.path.join(os.path.dirname(__file__),
> 'add_place.html')
> template_values = dict(place_id=place.key(),
> place=place.place)
> self.response.out.write(template.render(path,
> template_values))
>
> class AddPlace(webapp.RequestHandler):
> #creates blank template_values
> def get(self):
> g_place = self.request.get('place')
> user = users.get_current_user()
> param = 'add_place.html'
> path = os.path.join(os.path.dirname(__file__), param)
> template_values = dict(place=g_place)
> self.response.out.write(template.render(path,
> template_values))
>
> #creates initial group attribute values
> def post(self):
> g_place = self.request.get('place')
> group= Group(key_name=g_place)
> group.place = g_place
> group.center_lat = float(self.request.get('center_lat'))
> group.center_lng = float(self.request.get('center_lng'))
> group.zoom = int(self.request.get('zoom'))
> group.put()
> self.redirect("/?place=%s" % g_place)
>
> application = webapp.WSGIApplication(
> [('/', MainPage),
> ('/details.txt', Details),
> ('/add_place', AddPlace)],
> debug=True)
> *******************relevant python code above******************
>
> *******************relevant html code below******************
> var lastmarker;
> var myEventListener;
>
> var iwform = 'Enter your group\'s information:<br>'
> + '<form method="POST" onsubmit="return process(this)"
> action="add_place">'
> + 'Group Name or Initials: '
> + '<br />'
> + '<strong>{{place|escape}}</strong>'
> + '<br />'
> + ' <input type="hidden" name="place" value="{{place|
> addslashes}}"/>'
> + ' <input type="hidden" name="center_lat"/>'
> + ' <input type="hidden" name="center_lng"/>'
> + ' <input type="hidden" name="zoom"/>'
> + ' <input type="submit" value="Submit" />'
> + '<\/form>';
>
> function process(form) {
> // == populate map data
> form.center_lat.value = String(map.getCenter().lat());
> form.center_lng.value = String(map.getCenter().lng());
> form.zoom.value = String(map.getZoom());
> lastmarker.closeInfoWindow();
> GEvent.removeListener(myEventListener);
>
> return true;
> }
> *******************relevant html code above******************
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