Fixed #34077 -- Added form field rendering.

docs/ref/forms/api.txt

@@ -1257,6 +1257,16 @@ Attributes of ``BoundField``
         >>> print(f["message"].name)
         message
 
+.. attribute:: BoundField.template_name
+
+    .. versionadded:: 5.0
+
+    The name of the template rendered with :meth:`.BoundField.as_field_group`.
+
+    A property returning the value of the
+    :attr:`~django.forms.Field.template_name` if set otherwise
+    :attr:`~django.forms.renderers.BaseRenderer.field_template_name`.
+
 .. attribute:: BoundField.use_fieldset
 
     Returns the value of this BoundField widget's ``use_fieldset`` attribute.
@@ -1281,6 +1291,15 @@ Attributes of ``BoundField``
 Methods of ``BoundField``
 -------------------------
 
+.. method:: BoundField.as_field_group()
+
+    .. versionadded:: 5.0
+
+    Renders the field using :meth:`.BoundField.render` with default values
+    which renders the ``BoundField``, including its label, help text and errors
+    using the template's :attr:`~django.forms.Field.template_name` if set
+    otherwise :attr:`~django.forms.renderers.BaseRenderer.field_template_name`
+
 .. method:: BoundField.as_hidden(attrs=None, **kwargs)
 
     Returns a string of HTML for representing this as an ``<input type="hidden">``.
@@ -1321,6 +1340,13 @@ Methods of ``BoundField``
         >>> f["message"].css_classes("foo bar")
         'foo bar required'
 
+.. method:: BoundField.get_context()
+
+    .. versionadded:: 5.0
+
+    Return the template context for rendering the field. The available context
+    is ``field`` being the instance of the bound field.
+
 .. method:: BoundField.label_tag(contents=None, attrs=None, label_suffix=None, tag=None)
 
     Renders a label tag for the form field using the template specified by
@@ -1368,6 +1394,20 @@ Methods of ``BoundField``
     checkbox widgets where ``<legend>`` may be more appropriate than a
     ``<label>``.
 
+.. method:: BoundField.render(template_name=None, context=None, renderer=None)
+
+    .. versionadded:: 5.0
+
+    The render method is called by ``as_field_group``. All arguments are 
+    optional and default to:
+
+    * ``template_name``: :attr:`.BoundField.template_name`
+    * ``context``: Value returned by :meth:`.BoundField.get_context`
+    * ``renderer``: Value returned by :attr:`.Form.default_renderer`
+
+    By passing ``template_name`` you can customize the template used for just a
+    single call.
+
 .. method:: BoundField.value()
 
     Use this method to render the raw value of this field as it would be rendered

docs/ref/forms/fields.txt

@@ -337,6 +337,19 @@ using the ``disabled`` HTML attribute so that it won't be editable by users.
 Even if a user tampers with the field's value submitted to the server, it will
 be ignored in favor of the value from the form's initial data.
 
+``template_name``
+-----------------
+
+.. attribute:: Field.template_name
+
+.. versionadded:: 5.0
+
+The ``template_name`` argument allows a custom template to be used when the
+field is rendered with :meth:`~django.forms.BoundField.as_field_group`. By 
+default this value is set to ``"django/forms/field.html"``. Can be changed per
+field by overriding this attribute or more generally by overriding the default
+template, see also :ref:`overriding-built-in-field-templates`.
+
 Checking if the field data has changed
 ======================================
 

docs/ref/forms/renderers.txt

@@ -59,6 +59,14 @@ should return a rendered templates (as a string) or raise
 
         Defaults to ``"django/forms/formsets/div.html"`` template.
 
+    .. attribute:: field_template_name
+
+        .. versionadded:: 5.0
+
+        The default name of the template used to render a ``BoundField``.
+
+        Defaults to ``"django/forms/field.html"``
+
     .. method:: get_template(template_name)
 
         Subclasses must implement this method with the appropriate template
@@ -162,6 +170,16 @@ forms receive a dictionary with the following values:
 * ``hidden_fields``: All hidden bound fields.
 * ``errors``: All non field related or hidden field related form errors.
 
+Context available in field templates
+====================================
+
+.. versionadded:: 5.0
+
+Field templates receive a context from :meth:`.BoundField.get_context`. By
+default, fields receive a dictionary with the following values:
+
+* ``field``: The :class:`~django.forms.BoundField`.
+
 Context available in widget templates
 =====================================
 
@@ -201,6 +219,19 @@ To override form templates, you must use the :class:`TemplatesSetting`
 renderer. Then overriding widget templates works :doc:`the same as
 </howto/overriding-templates>` overriding any other template in your project.
 
+.. _overriding-built-in-field-templates:
+
+Overriding built-in field templates
+===================================
+
+.. versionadded:: 5.0
+
+:attr:`.Field.template_name`
+
+To override field templates, you must use the :class:`TemplatesSetting`
+renderer. Then overriding field templates works :doc:`the same as
+</howto/overriding-templates>` overriding any other template in your project.
+
 .. _overriding-built-in-widget-templates:
 
 Overriding built-in widget templates