allow selection of dbs where csv can be uploaded to (#5393)

superset/forms.py

@@ -49,8 +49,10 @@ def filter_not_empty_values(value):
 
 class CsvToDatabaseForm(DynamicForm):
     # pylint: disable=E0211
-    def all_db_items():
-        return db.session.query(models.Database)
+    def csv_enabled_dbs():
+        return db.session.query(
+            models.Database).filter_by(
+                allow_csv_upload=True).all()
 
     name = StringField(
         _('Table Name'),
@@ -64,7 +66,7 @@ class CsvToDatabaseForm(DynamicForm):
             FileRequired(), FileAllowed(['csv'], _('CSV Files Only!'))])
     con = QuerySelectField(
         _('Database'),
-        query_factory=all_db_items,
+        query_factory=csv_enabled_dbs,
         get_pk=lambda a: a.id, get_label=lambda a: a.database_name)
     sep = StringField(
         _('Delimiter'),