__init__() got an unexpected keyword argument 'required'

Question

For some reason, Django is not letting pass the parameter required=False to my form fields.

This is my form:

class InstrumentSearch(forms.ModelForm): 
    groups = forms.MultipleChoiceField(widget=forms.CheckboxSelectMultiple, required=False)
    time = forms.TimeInput(required=False)
    date = forms.DateField(required=False)
    notes = forms.TextInput(required=False)

The error is on the line

time = forms.TimeInput(required=False)

According to the Django Documentation here, this should absolutely work.

Solution 1

Looks to me like TimeInput inherits from Widget (via TextInput), which accepts attributes in one dictionary as the attrs argument. The examples with TextInput show use of required:

>>> name = forms.TextInput(attrs={'required': False})

By contrast, Field subclasses such as TimeField and CharField do accept keyword arguments like you use.

Solution 2

Instead of using required, try using blank instead. blank=False means it's not required.

time = forms.TimeInput(blank=True)

Comments

[Daniel Roseman]

This is not the answer. You can't use widgets at the top level: they need to be part of a Field.