[1.10.x] Fixed #26917 -- Fixed crash in disabled ModelChoiceFields.

Partially reverted refs #25532 to fix a regression in Django 1.10.
This reintroduces a crash for disabled forms.JSONField (refs #26949),
however, that issue is also present on Django 1.9.

Thanks Ryan Schave for the test.

Backport of a5f85d891b51d7ceb4f9e422e3e4f5c741062288 from master

1 files changed, 0 insertions, 8 deletions

diff --git a/tests/postgres_tests/test_json.py b/tests/postgres_tests/test_json.py
index 1978552cf9..d4f0a9bb57 100644
--- a/tests/postgres_tests/test_json.py
+++ b/tests/postgres_tests/test_json.py
@@ -260,14 +260,6 @@ class TestFormField(PostgreSQLTestCase):
         form_field = model_field.formfield()
         self.assertIsInstance(form_field, forms.JSONField)
 
-    def test_formfield_disabled(self):
-        class JsonForm(Form):
-            name = CharField()
-            jfield = forms.JSONField(disabled=True)
-
-        form = JsonForm({'name': 'xyz', 'jfield': '["bar"]'}, initial={'jfield': ['foo']})
-        self.assertIn('[&quot;foo&quot;]</textarea>', form.as_p())
-
     def test_prepare_value(self):
         field = forms.JSONField()
         self.assertEqual(field.prepare_value({'a': 'b'}), '{"a": "b"}')