From a350bfa6f44befff8779dbbdd72c9760bf5df959 Mon Sep 17 00:00:00 2001
From: David Smith <smithdc@gmail.com>
Date: Wed, 1 Apr 2020 17:48:23 +0100
Subject: [PATCH] Fixed #13009 -- Added BoundField.widget_type property.

---
 django/forms/boundfield.py            |  5 +++++
 docs/ref/forms/api.txt                | 17 +++++++++++++++++
 docs/releases/3.1.txt                 |  3 +++
 tests/forms_tests/tests/test_forms.py |  9 +++++++++
 4 files changed, 34 insertions(+)

diff --git a/django/forms/boundfield.py b/django/forms/boundfield.py
index 8832169021..66d065c9c8 100644
--- a/django/forms/boundfield.py
+++ b/django/forms/boundfield.py
@@ -1,4 +1,5 @@
 import datetime
+import re
 
 from django.forms.utils import flatatt, pretty_name
 from django.forms.widgets import Textarea, TextInput
@@ -227,6 +228,10 @@ class BoundField:
             attrs['disabled'] = True
         return attrs
 
+    @property
+    def widget_type(self):
+        return re.sub(r'widget$|input$', '', self.field.widget.__class__.__name__.lower())
+
 
 @html_safe
 class BoundWidget:
diff --git a/docs/ref/forms/api.txt b/docs/ref/forms/api.txt
index 23fbab9aff..a084867011 100644
--- a/docs/ref/forms/api.txt
+++ b/docs/ref/forms/api.txt
@@ -972,6 +972,23 @@ Attributes of ``BoundField``
         >>> print(f['message'].name)
         message
 
+.. attribute:: BoundField.widget_type
+
+    .. versionadded:: 3.1
+
+    Returns the lowercased class name of the wrapped field's widget, with any
+    trailing ``input`` or ``widget`` removed. This may be used when building
+    forms where the layout is dependent upon the widget type. For example::
+
+        {% for field in form %}
+            {% if field.widget_type == 'checkbox' %}
+                # render one way
+            {% else %}
+                # render another way
+            {% endif %}
+        {% endfor %}
+
+
 Methods of ``BoundField``
 -------------------------
 
diff --git a/docs/releases/3.1.txt b/docs/releases/3.1.txt
index 7df81329b4..85f4ca2d99 100644
--- a/docs/releases/3.1.txt
+++ b/docs/releases/3.1.txt
@@ -278,6 +278,9 @@ Forms
 * :attr:`.MultiWidget.widgets` now accepts a dictionary which allows
   customizing subwidget ``name`` attributes.
 
+* The new :attr:`.BoundField.widget_type` property can be used to dynamically
+  adjust form rendering based upon the widget type.
+
 Generic Views
 ~~~~~~~~~~~~~
 
diff --git a/tests/forms_tests/tests/test_forms.py b/tests/forms_tests/tests/test_forms.py
index b62b32de4b..f56eaee4b0 100644
--- a/tests/forms_tests/tests/test_forms.py
+++ b/tests/forms_tests/tests/test_forms.py
@@ -3142,6 +3142,15 @@ Good luck picking a username that doesn&#x27;t already exist.</p>
         self.assertEqual(form['field'].id_for_label, 'myCustomID')
         self.assertEqual(form['field_none'].id_for_label, 'id_field_none')
 
+    def test_boundfield_widget_type(self):
+        class SomeForm(Form):
+            first_name = CharField()
+            birthday = SplitDateTimeField(widget=SplitHiddenDateTimeWidget)
+
+        f = SomeForm()
+        self.assertEqual(f['first_name'].widget_type, 'text')
+        self.assertEqual(f['birthday'].widget_type, 'splithiddendatetime')
+
     def test_label_tag_override(self):
         """
         BoundField label_suffix (if provided) overrides Form label_suffix