Fixed #23169 - Misc docs fixes.

See the :ref:`format localization <format-localization>` documentation for

more information.

.. _built-in fields:

.. _built-in-fields:

Built-in ``Field`` classes

--------------------------

                def __init__(self, *args, **kwargs):

                    # Define one message for all fields.

                    error_messages = {

                        'incomplete': 'Enter a country code and phone number.',

                        'incomplete': 'Enter a country calling code and a phone number.',

                    }

                    # Or define a different message for each field.

                    fields = (

                        CharField(error_messages={'incomplete': 'Enter a country code.'},

                                  validators=[RegexValidator(r'^[0-9]+$', 'Enter a valid country code.')]),

                        CharField(error_messages={'incomplete': 'Enter a country calling code.'},

                                  validators=[RegexValidator(r'^[0-9]+$', 'Enter a valid country calling code.')]),

                        CharField(error_messages={'incomplete': 'Enter a phone number.'},

                                  validators=[RegexValidator(r'^[0-9]+$', 'Enter a valid phone number.')]),

                        CharField(validators=[RegexValidator(r'^[0-9]+$', 'Enter a valid extension.')],

Whenever you specify a field on a form, Django will use a default widget

that is appropriate to the type of data that is to be displayed. To find

which widget is used on which field, see the documentation about

:ref:`built-in fields`.

:ref:`built-in-fields`.

However, if you want to use a different widget for a field, you can

just use the :attr:`~Field.widget` argument on the field definition. For