categories.admin.NullTreeNodeChoiceField

NullTreeNodeChoiceField

class categories.admin.NullTreeNodeChoiceField(level_indicator='---', *args, **kwargs)

A ModelChoiceField for tree nodes.

Methods

bound_data(data, initial)	Return the value that should be shown for this field on render of a bound form, given the submitted POST data for the field and the initial data, if any.
clean(value)	Validate the given value and return its "cleaned" value as an appropriate Python object.
get_bound_field(form, field_name)	Return a BoundField instance that will be used when accessing the form field in a template.
get_limit_choices_to()	Return limit_choices_to for this form field.
has_changed(initial, data)	Return True if data differs from initial.
label_from_instance(obj)	Creates labels which represent the tree level of each node when generating option labels.
prepare_value(value)
run_validators(value)
to_python(value)	Return a string.
valid_value(value)	Check to see if the provided value is a valid choice.
validate(value)	Validate that the input is in self.choices.
widget_attrs(widget)	Given a Widget instance (not a Widget class), return a dictionary of any HTML attributes that should be added to the Widget, based on this Field.

Attributes

choices
default_error_messages
default_validators
empty_values
queryset