Django将自定义表单参数传递给Formset

from django import forms
from myapp.forms import CustomForm

def my_view(request):
    custom_param = 'example_value'
    formset = forms.formset_factory(CustomForm, extra=3)
    forms_with_params = [form(custom_param=custom_param) for form in formset()]
    context = {'forms': forms_with_params}
    return render(request, 'mytemplate.html', context)

class CustomForm(forms.Form):
    field1 = forms.CharField()
    field2 = forms.CharField()

    def __init__(self, custom_param=None, *args, **kwargs):
        super(CustomForm, self).__init__(*args, **kwargs)
        self.custom_param = custom_param

{% for form in forms %}
    <form>
        {{ form.custom_param }}
        {{ form.field1.label_tag }} {{ form.field1 }}
        {{ form.field2.label_tag }} {{ form.field2 }}
    </form>
{% endfor %}