def clean_postcode(self):
code = self.cleaned_data['postcode']
if not POSTCODE_RE.match(code):
raise forms.ValidationError("Please enter a valid postcode")
try:
constituency_name = twfy.getConstituency(code)
except (IOError, ValueError): # ValueError may be thrown by
# JSON decoding
raise forms.ValidationError("Sorry, there was a problem connecting to TheyWorkForYou to look up your constituency. Please try again in a few minutes.")
if constituency_name:
constituency = Constituency.objects.all()\
.filter(name=constituency_name)\
.filter(year=CONSTITUENCY_YEAR)
if constituency:
self.cleaned_data['constituency'] = constituency[0]
else:
raise forms.ValidationError("Internal error: Constituency '%s', year '%s' not found in DemocracyClub database" % (constituency_name, CONSTITUENCY_YEAR))
else:
raise forms.ValidationError("Unknown postcode")
return code
def constituency(place):
try:
if POSTCODE_RE.match(place):
const = twfy.getConstituency(place)
if const == None:
return None
else:
return [const]
else:
_, (lat, lng) = geocode(place)
consts = None
distance = 10
while not consts:
# Only likely to actually loop in extreme, circumstances,
# e.g. "Haltwhistle". See issue 19
consts = twfy.getConstituencies(latitude=lat,
longitude=lng,
distance=distance)
distance = distance * 2
return [x['name'] for x in consts]
except Exception:
return None