Fixed #30302 -- Fixed forms.model_to_dict() result if empty list of fields is passed.

2 files changed, 2 insertions, 1 deletions

diff --git a/django/forms/models.py b/django/forms/models.py
index d157c291ef..5edbbd376f 100644
--- a/django/forms/models.py
+++ b/django/forms/models.py
@@ -83,7 +83,7 @@ def model_to_dict(instance, fields=None, exclude=None):
     for f in chain(opts.concrete_fields, opts.private_fields, opts.many_to_many):
         if not getattr(f, 'editable', False):
             continue
-        if fields and f.name not in fields:
+        if fields is not None and f.name not in fields:
             continue
         if exclude and f.name in exclude:
             continue
diff --git a/tests/model_forms/tests.py b/tests/model_forms/tests.py
index 495fba1fb2..e4f24c31ee 100644
--- a/tests/model_forms/tests.py
+++ b/tests/model_forms/tests.py
@@ -1814,6 +1814,7 @@ class ModelOneToOneFieldTests(TestCase):
 
         bw = BetterWriter.objects.create(name='Joe Better', score=10)
         self.assertEqual(sorted(model_to_dict(bw)), ['id', 'name', 'score', 'writer_ptr'])
+        self.assertEqual(sorted(model_to_dict(bw, fields=[])), [])
         self.assertEqual(sorted(model_to_dict(bw, fields=['id', 'name'])), ['id', 'name'])
         self.assertEqual(sorted(model_to_dict(bw, exclude=[])), ['id', 'name', 'score', 'writer_ptr'])
         self.assertEqual(sorted(model_to_dict(bw, exclude=['id', 'name'])), ['score', 'writer_ptr'])