Reference Form fields Built-in Field classes

classMultipleChoiceField(**kwargs) : - Default widget: SelectMultiple - Empty value: [] (an empty list) - Normalizes to: A list of strings. - Validates that every value in the given list of values exists in the list of choices.

Reference Form fields Built-in Field classes

- Validates that the given value is either a datetime.time or string formatted in a particular time format. - Error message keys: required, invalid

Reference Form fields Built-in Field classes

classTypedMultipleChoiceField(**kwargs) : Just like a MultipleChoiceField, except TypedMultipleChoiceField takes two extra arguments, coerce and empty_value.

Reference Form fields Built-in Field classes

classUUIDField(**kwargs) : - Default widget: TextInput - Empty value: None - Normalizes to: A UUID object. - Error message keys: required, invalid

Reference Form fields

Reference Form fields Slightly complex built-in Field classes

- Validates that the given value is a datetime.datetime or string formatted in a particular datetime format. - Error message keys: required, invalid, invalid_date, invalid_time

Reference Form fields Fields which handle relationships

classModelMultipleChoiceField(**kwargs) : - Default widget: SelectMultiple - Empty value: An empty QuerySet (self.queryset.none()) - Normalizes to: A QuerySet of model instances. - Validates that every id in the given list of values exists in the queryset.

Reference Form fields Fields which handle relationships

By default, ModelChoiceField and ModelMultipleChoiceField use ModelChoiceIterator to generate their field choices. When iterated, ModelChoiceIterator yields 2-tuple choices containing ModelChoiceIteratorValue instances as the first value element in each choice.

Reference Form fields Fields which handle relationshipsIterating relationship choices

classModelChoiceIterator(field) : The default class assigned to the iterator attribute of ModelChoiceField and ModelMultipleChoiceField. An iterable that yields 2-tuple choices from the queryset.

Reference Form fields Fields which handle relationshipsIterating relationship choices

classModelChoiceIteratorValue(value,instance) : Two arguments are required:

Reference Form fields

To do this, create a subclass of django.forms.Field. Its only requirements are that it implement a clean() method and that its __init__() method accept the core arguments mentioned above (required, label, initial, widget, help_text).

Topic guide Form Assets (the Media class) Assets as a static definition

A boolean defining inheritance behavior for Media declarations. By default, any object using a static Media definition will inherit all the assets associated with the parent widget. This occurs regardless of how the parent defines its own requirements.

Topic guide Form Assets (the Media class)

If you need to perform some more sophisticated manipulation of asset requirements, you can define the media property directly. This is done by defining a widget property that returns an instance of forms.Media.

Topic guide Form Assets (the Media class)

Topic guide Form Assets (the Media class) Paths in asset definitions

String paths used to specify assets can be either relative or absolute. If a path starts with /, http:// or https://, it will be interpreted as an absolute path, and left as-is.

Topic guide Form Assets (the Media class) Paths in asset definitions

Asset paths may also be given as hashable objects implementing an __html__() method. The __html__() method is typically added using the html_safe() decorator. The object is responsible for outputting the complete HTML <script> or <link> tag content:

Topic guide Form Assets (the Media class) Media objects

If you only want files of a particular type, you can use the subscript operator to filter out a medium of interest.

Topic guide Form Assets (the Media class) Media objects

Media objects can also be added together. When two Media objects are added, the resulting Media object contains the union of the assets specified by both:

Topic guide Form Assets (the Media class) Media objects

The order in which assets are inserted into the DOM is often important. For example, you may have a script that depends on jQuery.

Reference Model Form Functions

inlineformset_factory(parent_model,model,form=ModelForm,formset=BaseInlineFormSet,fk_name=None,fields=None,exclude=None,extra=3,can_order=False,can_delete=True,max_num=None,formfield_callback=None,widgets=None,validate_max=False,localized_fields=None,labels=None,help_texts=None,error_messages=None,min_num=None,validate_min=False,field_classes=None,absolute_max=None,can_delete_extra=True,renderer=None,edit_only=False) : Returns an InlineFormSet using modelformset_factory() with defaults of formset=BaseInlineFormSet, can_delete=True, and extra=3.