Django, how to remove the blank choice from the choicefield in modelform?

Question

I created a model with a foreign key in it:

class Book(models.Model):     library = models.ForeignKey(Library, null=False, blank=False)     ... 

and then I created a form with a ModelForm to display to the users:

class BookSubmitForm(ModelForm):     class Meta:         model = Book 

and when I display the page with the form I get the Library choices but also the blank (--------) choice that comes by default.

I thought by having null=False and blank=False in the model that would get rid of that blank choice in the ModelForm but no. What can I do to only have actual choices in the list and not that one?

Answer 1

See ModelChoiceField. You have to set empty_label to None. So your code will be something like:

class BookSubmitForm(ModelForm):     library = ModelChoiceField(queryset=Library.objects, empty_label=None)      class Meta:         model = Book     

EDIT:changed the field name to lower case

Answer 2

self.fields['xxx'].empty_label = None would not work If you field type is TypedChoiceField which do not have empty_label property. What should we do is to remove first choice:

class BookSubmitForm(forms.ModelForm):      def __init__(self, *args, **kwargs):         super(BookSubmitForm, self).__init__(*args, **kwargs)          for field_name in self.fields:             field = self.fields.get(field_name)             if field and isinstance(field , forms.TypedChoiceField):                 field.choices = field.choices[1:]