[1.10.x] Fixed #27186 -- Fixed model form default fallback for MultiWidget, FileInput, SplitDateTimeWidget, SelectDateWidget, and SplitArrayWidget.

Thanks Matt Westcott for the review.

Backport of 3507d4e773aa9ff2336e7230ba231c4ba6eb568f from master

1 files changed, 6 insertions, 0 deletions

diff --git a/django/contrib/postgres/forms/array.py b/django/contrib/postgres/forms/array.py
index dd9ac1178e..bd3daaae0b 100644
--- a/django/contrib/postgres/forms/array.py
+++ b/django/contrib/postgres/forms/array.py
@@ -103,6 +103,12 @@ class SplitArrayWidget(forms.Widget):
         return [self.widget.value_from_datadict(data, files, '%s_%s' % (name, index))
                 for index in range(self.size)]
 
+    def value_omitted_from_data(self, data, files, name):
+        return all(
+            self.widget.value_omitted_from_data(data, files, '%s_%s' % (name, index))
+            for index in range(self.size)
+        )
+
     def id_for_label(self, id_):
         # See the comment for RadioSelect.id_for_label()
         if id_: