Free-form input for ForeignKey Field on a Django ModelForm

Question

I have two models related by a foreign key:

# models.py    
class TestSource(models.Model):
  name        = models.CharField(max_length=100)

class TestModel(mod         


        

Answer 1

Something like this should work:

class TestForm(ModelForm):
  attribution = forms.CharField(max_length=100)

  def save(self, commit=True):
      attribution_name = self.cleaned_data['attribution']
      attribution = TestSource.objects.get_or_create(name=attribution_name)[0]  # returns (instance, )
      self.instance.attribution = attribution

      return super(TestForm, self).save(commit)

  class Meta:
    model=TestModel
    exclude = ('attribution')