SOLVED!
I added a default class with a set_context method to grab the data from the
request and combined with a HiddenField and the CreateOnlyDefault to limit
it to POST only
class LatLongDefault(object):
"""
Provide default ``lat_long`` field for validation on POST.
"""
def set_context(self, serializer_field):
request = serializer_field.context['request']
LOGGER.debug('request data\n:%r', request.data)
self.latitude = float(request.data['latitude'])
self.longitude = float(request.data['longitude'])
def __call__(self):
return '%.3f %.3f' % (self.latitude, self.longitude)
def __repr__(self):
return unicode_to_repr('%s()' % self.__class__.__name__)
class WeatherSerializer(serializers.ModelSerializer):
"""weather serializer"""
lat_long = serializers.HiddenField(
default=serializers.CreateOnlyDefault(LatLongDefault())
)
class Meta:
model = Weather
I copied the code from the CurrentUserDefault in GitHub.
Let me just say that DRF is really well written code, several times I have
gone back to the source and it's always been illuminating!
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