josh-fell commented on a change in pull request #17269:
URL: https://github.com/apache/airflow/pull/17269#discussion_r678780369
##########
File path: airflow/www/views.py
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@@ -3226,6 +3226,12 @@ def process_form(self, form, is_created):
for key in self.extra_fields
if key in form.data and key.startswith(f"extra__{conn_type}__")
}
+
+ # If parameters are added to the classic `Extra` field, include these
values along with
+ # custom-field extras.
+ if form.data.get("extra"):
+ extra.update(json.loads(form.data.get("extra")))
Review comment:
Perhaps it is a better UX for the connection entry to be created but
flash an error message that the invalid `Extra` value(s) are not added.
Something like this:

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