Refs #32338 -- Removed 'for ="..."' from RadioSelect's <label>.

This improves accessibility for screen reader users.

Co-authored-by: Thibaud Colas <thibaudcolas@gmail.com>

django/forms/widgets.py

@@ -762,8 +762,18 @@ class RadioSelect(ChoiceWidget):
     template_name = 'django/forms/widgets/radio.html'
     option_template_name = 'django/forms/widgets/radio_option.html'
 
+    def id_for_label(self, id_, index=None):
+        """
+        Don't include for="field_0" in <label> to improve accessibility when
+        using a screen reader, in addition clicking such a label would toggle
+        the first input.
+        """
+        if index is None:
+            return ''
+        return super().id_for_label(id_, index)
 
-class CheckboxSelectMultiple(ChoiceWidget):
+
+class CheckboxSelectMultiple(RadioSelect):
     allow_multiple_selected = True
     input_type = 'checkbox'
     template_name = 'django/forms/widgets/checkbox_select.html'
@@ -779,15 +789,6 @@ class CheckboxSelectMultiple(ChoiceWidget):
         # never known if the value is actually omitted.
         return False
 
-    def id_for_label(self, id_, index=None):
-        """
-        Don't include for="field_0" in <label> because clicking such a label
-        would toggle the first checkbox.
-        """
-        if index is None:
-            return ''
-        return super().id_for_label(id_, index)
-
 
 class MultiWidget(Widget):
     """

tests/forms_tests/tests/test_forms.py

@@ -613,13 +613,14 @@ Java</label></li>
 </ul>"""
         )
 
-        # When RadioSelect is used with auto_id, and the whole form is printed using
-        # either as_table() or as_ul(), the label for the RadioSelect will point to the
-        # ID of the *first* radio button.
+        # When RadioSelect is used with auto_id, and the whole form is printed
+        # using either as_table() or as_ul(), the label for the RadioSelect
+        # will **not** point to the ID of the *first* radio button to improve
+        # accessibility for screen reader users.
         self.assertHTMLEqual(
             f.as_table(),
             """<tr><th><label for="id_name">Name:</label></th><td><input type="text" name="name" id="id_name" required></td></tr>
-<tr><th><label for="id_language_0">Language:</label></th><td><ul id="id_language">
+<tr><th><label>Language:</label></th><td><ul id="id_language">
 <li><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
 Python</label></li>
 <li><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
@@ -629,7 +630,7 @@ Java</label></li>
         self.assertHTMLEqual(
             f.as_ul(),
             """<li><label for="id_name">Name:</label> <input type="text" name="name" id="id_name" required></li>
-<li><label for="id_language_0">Language:</label> <ul id="id_language">
+<li><label>Language:</label> <ul id="id_language">
 <li><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
 Python</label></li>
 <li><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>
@@ -639,7 +640,7 @@ Java</label></li>
         self.assertHTMLEqual(
             f.as_p(),
             """<p><label for="id_name">Name:</label> <input type="text" name="name" id="id_name" required></p>
-<p><label for="id_language_0">Language:</label> <ul id="id_language">
+<p><label>Language:</label> <ul id="id_language">
 <li><label for="id_language_0"><input type="radio" id="id_language_0" value="P" name="language" required>
 Python</label></li>
 <li><label for="id_language_1"><input type="radio" id="id_language_1" value="J" name="language" required>

tests/forms_tests/tests/test_i18n.py

@@ -56,7 +56,7 @@ class FormsI18nTests(SimpleTestCase):
         f = SomeForm()
         self.assertHTMLEqual(
             f.as_p(),
-            '<p><label for="id_somechoice_0">\xc5\xf8\xdf:</label>'
+            '<p><label>\xc5\xf8\xdf:</label>'
             '<ul id="id_somechoice">\n'
             '<li><label for="id_somechoice_0">'
             '<input type="radio" id="id_somechoice_0" value="\xc5" name="somechoice" required> '
@@ -76,7 +76,7 @@ class FormsI18nTests(SimpleTestCase):
                 '<ul class="errorlist"><li>'
                 '\u041e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c'
                 '\u043d\u043e\u0435 \u043f\u043e\u043b\u0435.</li></ul>\n'
-                '<p><label for="id_somechoice_0">\xc5\xf8\xdf:</label>'
+                '<p><label>\xc5\xf8\xdf:</label>'
                 ' <ul id="id_somechoice">\n<li><label for="id_somechoice_0">'
                 '<input type="radio" id="id_somechoice_0" value="\xc5" name="somechoice" required> '
                 'En tied\xe4</label></li>\n'