Error -Undefined variable: 'ModelSelect2Widget'

Question

I am new to this field. I am working on Dependent Dropdowns for which i took reference from here. On replicating the same with the following code:

Forms.py

class AddressForm(forms.ModelForm):
   class Meta:
       model=City
       country = forms.ModelChoiceField(
          queryset=Country.objects.all(),
          label=u"Country",
          widget= ModelSelect2Widget(
            search_fields=['name__icontains'],
            dependent_fields={'city': 'cities'},
           )
       )

   city = forms.ModelChoiceField(
       queryset=City.objects.all(),
       label=u"City",
       widget=ModelSelect2Widget(
           search_fields=['name__icontains'],
           dependent_fields={'country': 'country'},
           max_results=500,
       )
   )

Getting error

Undefined variable: 'ModelSelect2Widget'

I also installed:

INSTALLED_APPS=[
                'django_select2',
                'django_q',
  ]

hey @WBM I tried- from django_select2 import ModelSelect2Widget but At the time of running server its giving error cannot import name 'ModelSelect2Widget' I hope my method is correct — Ritu
– Ritu, Commented Jan 4, 2021 at 12:29

Eric Taurone · Accepted Answer · 2021-01-28 17:27:39Z

0

The problem is in your import. In Select2, the ModelSelect2Widget class is in the forms module. So your import should be as follows:

from django_select2.forms import ModelSelect2Widget


class AddressForm(forms.ModelForm):
   class Meta:
       model=City
       country = forms.ModelChoiceField(
          queryset=Country.objects.all(),
          label=u"Country",
          widget= ModelSelect2Widget(
            search_fields=['name__icontains'],
            dependent_fields={'city': 'cities'},
           )
       )

   city = forms.ModelChoiceField(
       queryset=City.objects.all(),
       label=u"City",
       widget=ModelSelect2Widget(
           search_fields=['name__icontains'],
           dependent_fields={'country': 'country'},
           max_results=500,
       )
   )

answered Jan 28, 2021 at 17:27

Eric Taurone

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