class MultipleHiddenInput
from django.forms import MultipleHiddenInput
Handle <input type="hidden"> for fields that have a list
of values.
Ancestors (MRO)
- MultipleHiddenInput
- HiddenInput
- Input
- Widget
Attributes
| Defined in | |
|---|---|
input_type = 'hidden'
|
HiddenInput |
input_type = None
|
Input |
is_localized = False
|
Widget |
is_required = False
|
Widget |
needs_multipart_form = False
|
Widget |
supports_microseconds = True
|
Widget |
template_name = 'django/forms/widgets/multiple_hidden.html'
|
MultipleHiddenInput |
template_name = 'django/forms/widgets/hidden.html'
|
HiddenInput |
template_name = 'django/forms/widgets/input.html'
|
Input |
Properties
def
is_hidden():
¶
Widget
def
media():
¶
MultipleHiddenInput
Getter
def _media(self):
# Get the media property of the superclass, if it exists
sup_cls = super(cls, self)
try:
base = sup_cls.media
except AttributeError:
base = Media()
# Get the media definition for this class
definition = getattr(cls, 'Media', None)
if definition:
extend = getattr(definition, 'extend', True)
if extend:
if extend is True:
m = base
else:
m = Media()
for medium in extend:
m = m + base[medium]
return m + Media(definition)
return Media(definition)
return base
def
media():
¶
HiddenInput
Getter
def _media(self):
# Get the media property of the superclass, if it exists
sup_cls = super(cls, self)
try:
base = sup_cls.media
except AttributeError:
base = Media()
# Get the media definition for this class
definition = getattr(cls, 'Media', None)
if definition:
extend = getattr(definition, 'extend', True)
if extend:
if extend is True:
m = base
else:
m = Media()
for medium in extend:
m = m + base[medium]
return m + Media(definition)
return Media(definition)
return base
def
media():
¶
Input
Getter
def _media(self):
# Get the media property of the superclass, if it exists
sup_cls = super(cls, self)
try:
base = sup_cls.media
except AttributeError:
base = Media()
# Get the media definition for this class
definition = getattr(cls, 'Media', None)
if definition:
extend = getattr(definition, 'extend', True)
if extend:
if extend is True:
m = base
else:
m = Media()
for medium in extend:
m = m + base[medium]
return m + Media(definition)
return Media(definition)
return base
def
media():
¶
Widget
Getter
def _media(self):
# Get the media property of the superclass, if it exists
sup_cls = super(cls, self)
try:
base = sup_cls.media
except AttributeError:
base = Media()
# Get the media definition for this class
definition = getattr(cls, 'Media', None)
if definition:
extend = getattr(definition, 'extend', True)
if extend:
if extend is True:
m = base
else:
m = Media()
for medium in extend:
m = m + base[medium]
return m + Media(definition)
return Media(definition)
return base
Methods
def
_render(self, template_name, context, renderer=None):
¶
Widget
def _render(self, template_name, context, renderer=None):
if renderer is None:
renderer = get_default_renderer()
return mark_safe(renderer.render(template_name, context))
def
build_attrs(self, base_attrs, extra_attrs=None):
¶
Widget
Build an attribute dictionary.
def build_attrs(self, base_attrs, extra_attrs=None):
"""Build an attribute dictionary."""
return {**base_attrs, **(extra_attrs or {})}
def
format_value(self, value):
¶
MultipleHiddenInput
def format_value(self, value):
return [] if value is None else value
Widget
Return a value as it should appear when rendered in a template.
def format_value(self, value):
"""
Return a value as it should appear when rendered in a template.
"""
if value == '' or value is None:
return None
if self.is_localized:
return formats.localize_input(value)
return str(value)
def
get_context(self, name, value, attrs):
¶
MultipleHiddenInput
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
final_attrs = context['widget']['attrs']
id_ = context['widget']['attrs'].get('id')
subwidgets = []
for index, value_ in enumerate(context['widget']['value']):
widget_attrs = final_attrs.copy()
if id_:
# An ID attribute was given. Add a numeric index as a suffix
# so that the inputs don't all have the same ID attribute.
widget_attrs['id'] = '%s_%s' % (id_, index)
widget = HiddenInput()
widget.is_required = self.is_required
subwidgets.append(widget.get_context(name, value_, widget_attrs)['widget'])
context['widget']['subwidgets'] = subwidgets
return context
Input
def get_context(self, name, value, attrs):
context = super().get_context(name, value, attrs)
context['widget']['type'] = self.input_type
return context
Widget
def get_context(self, name, value, attrs):
context = {}
context['widget'] = {
'name': name,
'is_hidden': self.is_hidden,
'required': self.is_required,
'value': self.format_value(value),
'attrs': self.build_attrs(self.attrs, attrs),
'template_name': self.template_name,
}
return context
def
id_for_label(self, id_):
¶
Widget
Return the HTML ID attribute of this Widget for use by a <label>,
given the ID of the field. Return None if no ID is available.
This hook is necessary because some widgets have multiple HTML
elements and, thus, multiple IDs. In that case, this method should
return an ID value that corresponds to the first ID in the widget's
tags.
def id_for_label(self, id_):
"""
Return the HTML ID attribute of this Widget for use by a <label>,
given the ID of the field. Return None if no ID is available.
This hook is necessary because some widgets have multiple HTML
elements and, thus, multiple IDs. In that case, this method should
return an ID value that corresponds to the first ID in the widget's
tags.
"""
return id_
def
render(self, name, value, attrs=None, renderer=None):
¶
Widget
Render the widget as an HTML string.
def render(self, name, value, attrs=None, renderer=None):
"""Render the widget as an HTML string."""
context = self.get_context(name, value, attrs)
return self._render(self.template_name, context, renderer)
def
subwidgets(self, name, value, attrs=None):
¶
Widget
def subwidgets(self, name, value, attrs=None):
context = self.get_context(name, value, attrs)
yield context['widget']
def
use_required_attribute(self, initial):
¶
Widget
def use_required_attribute(self, initial):
return not self.is_hidden
def
value_from_datadict(self, data, files, name):
¶
MultipleHiddenInput
def value_from_datadict(self, data, files, name):
try:
getter = data.getlist
except AttributeError:
getter = data.get
return getter(name)
Widget
Given a dictionary of data and this widget's name, return the value
of this widget or None if it's not provided.
def value_from_datadict(self, data, files, name):
"""
Given a dictionary of data and this widget's name, return the value
of this widget or None if it's not provided.
"""
return data.get(name)
def
value_omitted_from_data(self, data, files, name):
¶
Widget
def value_omitted_from_data(self, data, files, name):
return name not in data