But I want to be able to invalidate my form if geocoding fails... Can I still
do that in the save method?
On Oct 18, 2011, at 4:52 AM, Daniel Roseman <dan...@roseman.org.uk> wrote:
> On Monday, 17 October 2011 20:30:35 UTC+1, Jefferson Heard wrote:
> class FarmersMarket(ModelForm):
> class Meta:
> model = models.FarmersMarket
> exclude = ('location',)
> def clean(self):
> place, (lat, lng) = _g.geocode(self.cleaned_data['address'])
> self.cleaned_data['location'] = Point(lng,lat)
> return self.cleaned_data
>
> ----
>
> Here's my code minus the exception handling. Now what I *want* to
> have happen is that the models.FarmersMarket.location field on the
> model is set sometime shortly after the form is submitted by the user,
> by way of geocoding the data, rather than having them tediously enter
> a POINT wkt string in the textarea field. So my idea was to put a
> call to geopy.Google.geocode in FarmersMarket.self.clean. I can
> confirm clean() is getting called, but for some reason, the 'location'
> field isn't being set in the model. I get a whine from Django that
> the location field cannot be NULL (which is true, it can't).
>
> Can anyone tell me how I'm supposed to be doing this? I want them to
> enter an address on the form, not a latitude/longitude pair.
>
> -- Jeff
>
>
> The point is, you've told Django that `location` isn't a field on this form,
> by specifying it in `exclude`. So Django doesn't take any notice of the extra
> element you've added in cleaned_data.
>
> The way to do this is to override the form's save method and do it there:
>
> def save(self, commit=False):
> market = super(FarmersMarket, self).save(commit=False)
> place, (lat, lng) = _g.geocode(market.address)
> market.location = Point(lng,lat)
> if commit:
> market.save()
> return market
>
> --
> DR.
>
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