Merge pull request #4271 from PsiloLR/ticket_24456

``ManyToManyField`` is represented as a ``MultipleChoiceField``. Here is the

full list of conversions:

===============================  ========================================

.. currentmodule:: django.db.models

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Model field                         Form field

===============================  ========================================

``AutoField``                    Not represented in the form

=================================== ==================================================

:class:`AutoField`                  Not represented in the form

``BigIntegerField``              ``IntegerField`` with ``min_value`` set

                                 to -9223372036854775808 and ``max_value``

                                 set to 9223372036854775807.

:class:`BigIntegerField`            :class:`IntegerField` with ``min_value``

                                    set to -9223372036854775808 and

                                    ``max_value`` set to 9223372036854775807.

``BooleanField``                 ``BooleanField``

:class:`BooleanField`               :class:`~django.forms.BooleanField`

``CharField``                    ``CharField`` with ``max_length`` set to

                                 the model field's ``max_length``

:class:`CharField`                  :class:`~django.forms.CharField` with 

                                    ``max_length`` set to the model field's 

                                    ``max_length``

``CommaSeparatedIntegerField``   ``CharField``

:class:`CommaSeparatedIntegerField` :class:`~django.forms.CharField`

``DateField``                    ``DateField``

:class:`DateField`                  :class:`~django.forms.DateField`

``DateTimeField``                ``DateTimeField``

:class:`DateTimeField`              :class:`~django.forms.DateTimeField`

``DecimalField``                 ``DecimalField``

:class:`DecimalField`               :class:`~django.forms.DecimalField`

``EmailField``                   ``EmailField``

:class:`EmailField`                 :class:`~django.forms.EmailField`

``FileField``                    ``FileField``

:class:`FileField`                  :class:`~django.forms.FileField`

``FilePathField``                ``FilePathField``

:class:`FilePathField`              :class:`~django.forms.FilePathField`

``FloatField``                   ``FloatField``

:class:`FloatField`                 :class:`~django.forms.FloatField`

``ForeignKey``                   ``ModelChoiceField`` (see below)

:class:`ForeignKey`                 :class:`~django.forms.ModelChoiceField` 

                                    (see below)

``ImageField``                   ``ImageField``

``ImageField``                      :class:`~django.forms.ImageField`

``IntegerField``                 ``IntegerField``

:class:`IntegerField`               :class:`~django.forms.IntegerField`

``IPAddressField``                  ``IPAddressField``

``GenericIPAddressField``        ``GenericIPAddressField``

:class:`GenericIPAddressField`      :class:`~django.forms.GenericIPAddressField`

``ManyToManyField``              ``ModelMultipleChoiceField`` (see

                                 below)

:class:`ManyToManyField`            :class:`~django.forms.ModelMultipleChoiceField` 

                                    (see below)

``NullBooleanField``             ``CharField``

:class:`NullBooleanField`           :class:`~django.forms.CharField`

``PositiveIntegerField``         ``IntegerField``

:class:`PositiveIntegerField`       :class:`~django.forms.IntegerField`

``PositiveSmallIntegerField``    ``IntegerField``

:class:`PositiveSmallIntegerField`  :class:`~django.forms.IntegerField`

``SlugField``                    ``SlugField``

:class:`SlugField`                  :class:`~django.forms.SlugField`

``SmallIntegerField``            ``IntegerField``

:class:`SmallIntegerField`          :class:`~django.forms.IntegerField`

``TextField``                    ``CharField`` with

:class:`TextField`                  :class:`~django.forms.CharField` with

                                    ``widget=forms.Textarea``

``TimeField``                    ``TimeField``

:class:`TimeField`                  :class:`~django.forms.TimeField`

``URLField``                     ``URLField``

===============================  ========================================

:class:`URLField`                   :class:`~django.forms.URLField`

=================================== ==================================================

.. currentmodule:: django.forms

As you might expect, the ``ForeignKey`` and ``ManyToManyField`` model field

types are special cases: