Fixed #22383 -- Added support for HTML5 required attribute on required form fields.

django/forms/boundfield.py

@@ -85,6 +85,8 @@ class BoundField(object):
             widget.is_localized = True
 
         attrs = attrs or {}
+        if not widget.is_hidden and self.field.required and self.form.use_required_attribute:
+            attrs['required'] = True
         if self.field.disabled:
             attrs['disabled'] = True
         auto_id = self.auto_id

django/forms/forms.py

@@ -67,10 +67,11 @@ class BaseForm(object):
     # class, not to the Form class.
     field_order = None
     prefix = None
+    use_required_attribute = True
 
     def __init__(self, data=None, files=None, auto_id='id_%s', prefix=None,
                  initial=None, error_class=ErrorList, label_suffix=None,
-                 empty_permitted=False, field_order=None):
+                 empty_permitted=False, field_order=None, use_required_attribute=None):
         self.is_bound = data is not None or files is not None
         self.data = data or {}
         self.files = files or {}
@@ -93,6 +94,9 @@ class BaseForm(object):
         self._bound_fields_cache = {}
         self.order_fields(self.field_order if field_order is None else field_order)
 
+        if use_required_attribute is not None:
+            self.use_required_attribute = use_required_attribute
+
     def order_fields(self, field_order):
         """
         Rearranges the fields according to field_order.

django/forms/formsets.py

@@ -161,6 +161,10 @@ class BaseFormSet(object):
             'auto_id': self.auto_id,
             'prefix': self.add_prefix(i),
             'error_class': self.error_class,
+            # Don't render the HTML 'required' attribute as it may cause
+            # incorrect validation for extra, optional, and deleted
+            # forms in the formset.
+            'use_required_attribute': False,
         }
         if self.is_bound:
             defaults['data'] = self.data
@@ -195,6 +199,7 @@ class BaseFormSet(object):
             auto_id=self.auto_id,
             prefix=self.add_prefix('__prefix__'),
             empty_permitted=True,
+            use_required_attribute=False,
             **self.get_form_kwargs(None)
         )
         self.add_fields(form, None)

django/forms/models.py

@@ -278,7 +278,7 @@ class ModelFormMetaclass(DeclarativeFieldsMetaclass):
 class BaseModelForm(BaseForm):
     def __init__(self, data=None, files=None, auto_id='id_%s', prefix=None,
                  initial=None, error_class=ErrorList, label_suffix=None,
-                 empty_permitted=False, instance=None):
+                 empty_permitted=False, instance=None, use_required_attribute=None):
         opts = self._meta
         if opts.model is None:
             raise ValueError('ModelForm has no model class specified.')
@@ -296,8 +296,10 @@ class BaseModelForm(BaseForm):
         # It is False by default so overriding self.clean() and failing to call
         # super will stop validate_unique from being called.
         self._validate_unique = False
-        super(BaseModelForm, self).__init__(data, files, auto_id, prefix, object_data,
-                                            error_class, label_suffix, empty_permitted)
+        super(BaseModelForm, self).__init__(
+            data, files, auto_id, prefix, object_data, error_class,
+            label_suffix, empty_permitted, use_required_attribute=use_required_attribute,
+        )
         # Apply ``limit_choices_to`` to each field.
         for field_name in self.fields:
             formfield = self.fields[field_name]