Hidden delete inline formset base class for Django.

gistfile1.py

class HiddenDeleteBaseInlineFormSet(BaseInlineFormSet):
    """
    Makes the delete field a hidden input rather than the default checkbox
    
    inlineformset_factory(Book, Page, formset=HiddenDeleteBaseInlineFormSet, can_delete=True)
    """
    def add_fields(self, form, index):
        super(HiddenDeleteBaseInlineFormSet, self).add_fields(form, index)
        if self.can_delete:
            form.fields[DELETION_FIELD_NAME] = forms.BooleanField(
                label=_('Delete'),
                required=False,
                widget=forms.HiddenInput
            )

Awesome .
Addition
from django.forms import BaseInlineFormset