Fixed #34077 -- Added form field rendering.

django/forms/boundfield.py

@@ -1,7 +1,7 @@
 import re
 
 from django.core.exceptions import ValidationError
-from django.forms.utils import pretty_name
+from django.forms.utils import RenderableFieldMixin, pretty_name
 from django.forms.widgets import MultiWidget, Textarea, TextInput
 from django.utils.functional import cached_property
 from django.utils.html import format_html, html_safe
@@ -10,8 +10,7 @@ from django.utils.translation import gettext_lazy as _
 __all__ = ("BoundField",)
 
 
-@html_safe
-class BoundField:
+class BoundField(RenderableFieldMixin):
     "A Field plus data"
 
     def __init__(self, form, field, name):
@@ -26,12 +25,7 @@ class BoundField:
         else:
             self.label = self.field.label
         self.help_text = field.help_text or ""
-
-    def __str__(self):
-        """Render this field as an HTML widget."""
-        if self.field.show_hidden_initial:
-            return self.as_widget() + self.as_hidden(only_initial=True)
-        return self.as_widget()
+        self.renderer = form.renderer
 
     @cached_property
     def subwidgets(self):
@@ -81,6 +75,13 @@ class BoundField:
             self.name, self.form.error_class(renderer=self.form.renderer)
         )
 
+    @property
+    def template_name(self):
+        return self.field.template_name or self.form.renderer.field_template_name
+
+    def get_context(self):
+        return {"field": self}
+
     def as_widget(self, widget=None, attrs=None, only_initial=False):
         """
         Render the field by rendering the passed widget, adding any HTML

django/forms/fields.py

@@ -107,6 +107,7 @@ class Field:
         localize=False,
         disabled=False,
         label_suffix=None,
+        template_name=None,
     ):
         # required -- Boolean that specifies whether the field is required.
         #             True by default.
@@ -164,6 +165,7 @@ class Field:
         self.error_messages = messages
 
         self.validators = [*self.default_validators, *validators]
+        self.template_name = template_name
 
         super().__init__()
 

django/forms/jinja2/django/forms/div.html

@@ -4,16 +4,7 @@
 {% endif %}
 {% for field, errors in fields %}
   <div{% set classes = field.css_classes() %}{% if classes %} class="{{ classes }}"{% endif %}>
-    {% if field.use_fieldset %}
-      <fieldset>
-      {% if field.label %}{{ field.legend_tag() }}{% endif %}
-    {% else %}
-      {% if field.label %}{{ field.label_tag() }}{% endif %}
-    {% endif %}
-    {% if field.help_text %}<div class="helptext">{{ field.help_text|safe }}</div>{% endif %}
-    {{ errors }}
-    {{ field }}
-    {% if field.use_fieldset %}</fieldset>{% endif %}
+    {{ field.as_field_group() }}
     {% if loop.last %}
       {% for field in hidden_fields %}{{ field }}{% endfor %}
     {% endif %}

django/forms/jinja2/django/forms/field.html

@@ -0,0 +1,10 @@
+{% if field.use_fieldset %}
+  <fieldset>
+  {% if field.label %}{{ field.legend_tag() }}{% endif %}
+{% else %}
+  {% if field.label %}{{ field.label_tag() }}{% endif %}
+{% endif %}
+{% if field.help_text %}<div class="helptext">{{ field.help_text|safe }}</div>{% endif %}
+{{ field.errors }}
+{{ field }}
+{% if field.use_fieldset %}</fieldset>{% endif %}

django/forms/renderers.py

@@ -19,6 +19,7 @@ def get_default_renderer():
 class BaseRenderer:
     form_template_name = "django/forms/div.html"
     formset_template_name = "django/forms/formsets/div.html"
+    field_template_name = "django/forms/field.html"
 
     def get_template(self, template_name):
         raise NotImplementedError("subclasses must implement get_template()")

django/forms/templates/django/forms/div.html

@@ -4,16 +4,7 @@
 {% endif %}
 {% for field, errors in fields %}
   <div{% with classes=field.css_classes %}{% if classes %} class="{{ classes }}"{% endif %}{% endwith %}>
-    {% if field.use_fieldset %}
-      <fieldset>
-      {% if field.label %}{{ field.legend_tag }}{% endif %}
-    {% else %}
-      {% if field.label %}{{ field.label_tag }}{% endif %}
-    {% endif %}
-    {% if field.help_text %}<div class="helptext">{{ field.help_text|safe }}</div>{% endif %}
-    {{ errors }}
-    {{ field }}
-    {% if field.use_fieldset %}</fieldset>{% endif %}
+    {{ field.as_field_group }}
     {% if forloop.last %}
       {% for field in hidden_fields %}{{ field }}{% endfor %}
     {% endif %}

django/forms/templates/django/forms/field.html

@@ -0,0 +1,10 @@
+{% if field.use_fieldset %}
+  <fieldset>
+  {% if field.label %}{{ field.legend_tag }}{% endif %}
+{% else %}
+  {% if field.label %}{{ field.label_tag }}{% endif %}
+{% endif %}
+{% if field.help_text %}<div class="helptext">{{ field.help_text|safe }}</div>{% endif %}
+{{ field.errors }}
+{{ field }}
+{% if field.use_fieldset %}</fieldset>{% endif %}

django/forms/utils.py

@@ -58,6 +58,29 @@ class RenderableMixin:
     __html__ = render
 
 
+class RenderableFieldMixin(RenderableMixin):
+    def as_field_group(self):
+        return self.render()
+
+    def as_hidden(self):
+        raise NotImplementedError(
+            "Subclasses of RenderableFieldMixin must provide an as_hidden() method."
+        )
+
+    def as_widget(self):
+        raise NotImplementedError(
+            "Subclasses of RenderableFieldMixin must provide an as_widget() method."
+        )
+
+    def __str__(self):
+        """Render this field as an HTML widget."""
+        if self.field.show_hidden_initial:
+            return self.as_widget() + self.as_hidden(only_initial=True)
+        return self.as_widget()
+
+    __html__ = __str__
+
+
 class RenderableFormMixin(RenderableMixin):
     def as_p(self):
         """Render as <p> elements."""