Django 2.0.9 - Multiselectformfield - Parameter to make not mandatory

Question

I want to take the field Multiselectfield not mandatory. When I do not choose any of the options the validation is charging mandatory field. I tried to use the parameters Blank=True and null=True, but still accuse that the field is required.

Does anyone know which parameter I should inform for the field Multiselectfield be optional and not mandatory?

Forms.py

    class MyForm(forms.ModelForm):

        MY_CHOICES = (
            ('1', "A good choice"),
            ('2', "A bad choice"),
        )

        my_field = forms.MultipleChoiceField(
               label='Escolhas', widget=forms.CheckboxSelectMultiple, choices=MY_CHOICE
               )

py.models

from multiselectfield import MultiSelectField

class MyModel(models.Model):
    MY_CHOICES = (
        ('1', "A good choice"),
        ('2', "A bad choice"),
    )
    my_field = MultiSelectField('Escolhas', choices=MY_CHOICES, default=0)

Answer 1

Guy, in the documentation there’s no Multiselectfield, so I guess you’re using Django-multiselectfield (it would be nice to specify in the question the lib and the version).

Seeing the code, you can see that the class extends from models.CharField and uses the comma-separated fields underneath the cloths. You can also see that it implements the properties min_choices and max_choices.

I never used this library, but I would try to use blank=True and min_choices=0.

Ex.:

my_field = MultiSelectField('Escolhas', choices=MY_CHOICES, blank=True, min_choices=0)