Fixed #35449 -- Fixed validation of array items in SplitArrayField when remove_trailing_nulls=True.

django/contrib/postgres/forms/array.py

@@ -228,7 +228,7 @@ class SplitArrayField(forms.Field):
                         params={"nth": index + 1},
                     )
                 )
-                cleaned_data.append(None)
+                cleaned_data.append(item)
             else:
                 errors.append(None)
         cleaned_data, null_index = self._remove_trailing_nulls(cleaned_data)

tests/postgres_tests/test_array.py

@@ -1339,6 +1339,22 @@ class TestSplitFormField(PostgreSQLSimpleTestCase):
             ],
         )
 
+    def test_invalid_char_length_with_remove_trailing_nulls(self):
+        field = SplitArrayField(
+            forms.CharField(max_length=2, required=False),
+            size=3,
+            remove_trailing_nulls=True,
+        )
+        with self.assertRaises(exceptions.ValidationError) as cm:
+            field.clean(["abc", "", ""])
+        self.assertEqual(
+            cm.exception.messages,
+            [
+                "Item 1 in the array did not validate: Ensure this value has at most 2 "
+                "characters (it has 3).",
+            ],
+        )
+
     def test_splitarraywidget_value_omitted_from_data(self):
         class Form(forms.ModelForm):
             field = SplitArrayField(forms.IntegerField(), required=False, size=2)