django.forms.widgets.NullBooleanSelect

Method	__init__	Undocumented
Method	format_value	Return selected values as a list.
Method	value_from_datadict	Given a dictionary of data and this widget's name, return the value of this widget or None if it's not provided.

Inherited from Select:

Method	get_context	Undocumented
Method	use_required_attribute	Don't render 'required' if the first <option> has a value, as that's invalid HTML.
Class Variable	add_id_index	Undocumented
Class Variable	checked_attribute	Undocumented
Class Variable	input_type	Undocumented
Class Variable	option_inherits_attrs	Undocumented
Class Variable	option_template_name	Undocumented
Class Variable	template_name	Undocumented
Static Method	_choice_has_empty_value	Return True if the choice's value is empty string or None.

Inherited from ChoiceWidget (via Select):

Method	__deepcopy__	Undocumented
Method	create_option	Undocumented
Method	id_for_label	Use an incremented id for each option where the main widget references the zero index.
Method	optgroups	Return a list of optgroups for this widget.
Method	options	Yield a flat list of options for this widget.
Method	subwidgets	Yield all "subwidgets" of this widget. Used to enable iterating options from a BoundField for choice widgets.
Class Variable	allow_multiple_selected	Undocumented
Instance Variable	choices	Undocumented

Inherited from Widget (via Select, ChoiceWidget):

Method	build_attrs	Build an attribute dictionary.
Method	render	Render the widget as an HTML string.
Method	value_omitted_from_data	Undocumented
Class Variable	is_localized	Undocumented
Class Variable	is_required	Undocumented
Class Variable	needs_multipart_form	Undocumented
Class Variable	supports_microseconds	Undocumented
Class Variable	use_fieldset	Undocumented
Instance Variable	attrs	Undocumented
Property	is_hidden	Undocumented
Method	_render	Undocumented