[Answered ]-Django form geocoding – where to geocode, how to validate, how to pass geocode result

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I’m no django expert, but this is what I did:

 def clean_homeaddress(self):
        in_address = self.cleaned_data['homeaddress']        
        place, self.cleaned_data['homelocation'] = address_to_latlng(in_address, True)
        return place

oh, and by the way, have a look at the wrapper below. geocoders.Google doesn’t handle unicode strings properly. There’s a simple hack below which removes all non-ascii characters. I haven’t had time to figure out better solution yet.

def address_to_latlng(address, return_address = False):
    """ returns GoeDjango POINT string value for given location (address)
        if return_address is true, it'll return 2-tuple: (address, point)
        otherwise it returns point
    """ 
    g = geocoders.Google()
    try:
        #TODO: not really replace, geocode should use unicode strings
        address = address.encode('ascii', 'replace')            
        place, latlng = g.geocode(address)            
    except Exception as e:            
        raise ValidationError(_(u"Incorrect location provided"))
    point = 'POINT(%f %f)' % tuple(reversed(latlng))
    if return_address:
        return (place, point)    
    return point

as requested, there’s full code. this one will print the location to the output console, and it’ll keep the “cleaned” (as returned by Google) address in the session, to display it to the user each time the form is displayed.

class GeoForm(forms.Form):
    address = forms.CharField()    

    def clean_address(self):
        in_address = self.cleaned_data['address']        
        place, self.cleaned_data['location'] = address_to_latlng(in_address, True)
        return place

class GeoView(FormView):
    form_class = GeoForm
    template_name = 'geoview.html'
    success_url = '/sandbox/geo'
    def get_initial(self):
        if '_address' in self.request.session:
            return {'address': self.request.session['_address']}
        return {}
    def form_valid(self,form):
        print form.cleaned_data['location']
        self.request.session['_address'] = form.cleaned_data['address']
        return super(GeoView, self).form_valid(form)
👤migajek

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