[1.11.x] Fixed #28058 -- Restored empty BoundFields evaluating to True.

Regression in b52c73008a9d67e9ddbb841872dc15cdd3d6ee01

Backport of c09bf8d76770d39a4d9545b67598cd05adee281b from master

1 files changed, 7 insertions, 0 deletions

diff --git a/django/forms/boundfield.py b/django/forms/boundfield.py
index a1063b2b05..a8e81afe9b 100644
--- a/django/forms/boundfield.py
+++ b/django/forms/boundfield.py
@@ -57,6 +57,13 @@ class BoundField(object):
             for widget in self.field.widget.subwidgets(self.html_name, self.value(), attrs=attrs)
         )
 
+    def __bool__(self):
+        # BoundField evaluates to True even if it doesn't have subwidgets.
+        return True
+
+    def __nonzero__(self):      # Python 2 compatibility
+        return type(self).__bool__(self)
+
     def __iter__(self):
         return iter(self.subwidgets)