TypeError when saving a formset

Question

I've declared a formset like so:

class BaseFeatureFormSet(BaseFormSet):
    def save(self, commit = True):
        feature = Feature(name = self.cleaned_data['name'], 
                     type = self.cleaned_data['type'], 
                     premium = self.cleaned_data['premium'],)
        feature.save()
        return feature


FeaturesFormset = formset_factory(EditFeatureForm, 
                                  formset = BaseFeatureFormSet, extra = 0)

So when I'm saving the formset, I'm getting a TypeError: list indices must be integers, not str referring to the first line of the save() function. How do I solve this error?

Update 1 Managed to solve this first bit thanks to gruszyczy. I'm not getting another TypeError: 'EditFeatureFormFormSet' object is not iterable from the next line in the code section:

for feature in features:
    feature.save()
    feature = vehicle.features.add(feature)

The error is from for feature in features: Ideas?

Answer 1

cleaned_data in this example is a list of form values. You have to iterate over it and inside you will find data you need:

for values in self.cleaned_data:
    feature = Feature(name=values['name'], ..

That's because formset is a list of forms, that are displayed and returns a list of form values. This is a simple concept to grasp, when you simple realise, that FormSet <-> [Form, Form, Form, ..]

Answer 2

Where exactly is features defined as a list/tuple?