How can I dynamically add custom attributes to Django ModelChoiceField options?

I’m trying to add a transient attribute (like a status indicator) to each option of a Django ModelChoiceField so I can use JavaScript to hide or show elements based on checkbox changes. The custom attribute is generated at each page load, and I’m extending the widget’s create_option method to inject this attribute. However, while the Python logs confirm that the attribute is being added, the final rendered HTML does not include it.

Below is the original code I adapted from the Django docs and other online solutions:

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from django import forms

class ToppingSelect(forms.Select):
    def create_option(
        self, name, value, label, selected, index, subindex=None, attrs=None
    ):
        option = super().create_option(
            name, value, label, selected, index, subindex, attrs
        )
        if value:
            option["attrs"]["data-price"] = value.instance.price
        return option

class PizzaForm(forms.ModelForm):
    class Meta:
        model = Pizza
        fields = ["topping"]
        widgets = {"topping": ToppingSelect}

I then implemented my custom select as follows:

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class CustomSelectWithAttrs(forms.Select):

    def create_option(
        self, name, value, label, selected, index, subindex=None, attrs=None
    ):
        option = super().create_option(
            name, value, label, selected, index, subindex, attrs
        )
        print(f'option = {option}')
        print(f'\tattrs = {attrs}')
        print(f'\tvalue = {value}  instance={value.instance}')
        if value:
            print(f'\tstatus = {value.instance.status}')
            option["attrs"]['current-status'] = value.instance.status.state
        print(f'all set now: option = {option}')
        return option

And here is the form using the custom widget:

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class MatchFilterForm(ModelForm):
    class Meta:
        model = Match
        fields = {'tutor', 'student', 'match_status', 'date_started', 'comments'}
        exclude = {'lvm_affiliate', 'date_dissolved', }
        labels = {'tutor': 'Tutor pool',
                  'student': 'Student pool',
                  'match_status': "Status",
                  'date_started': "Start date",
                  'comments': 'Comments'}
        widgets = {
            'date_started': DateInput(
                format='%Y-%m-%d',
                attrs={ 'class': 'form-control', 'placeholder': 'Select a date', 'type': 'date' }
            ),
            'student': CustomSelectWithAttrs,
        }

The form renders correctly, but the custom attribute (‘current-status’) does not appear in the final HTML output. Has anyone encountered this behavior or know what might be interfering with the attribute rendering in the widget's create_option method?