From fd5a6b739666a62cff486873877eef10523aec1a Mon Sep 17 00:00:00 2001
From: Nicholas Kumia <nicholas.kumia@gsa.gov>
Date: Mon, 19 Jul 2021 11:03:49 -0400
Subject: [PATCH] fix for py3 also works for py2;
 https://stackoverflow.com/questions/48374667/object-of-type-dict-items-is-not-json-serializable

---
 ckanext/harvest/helpers.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ckanext/harvest/helpers.py b/ckanext/harvest/helpers.py
index 6d969f9d7..1bc4a230b 100644
--- a/ckanext/harvest/helpers.py
+++ b/ckanext/harvest/helpers.py
@@ -133,7 +133,7 @@ def harvest_source_extra_fields():
     for harvester in p.PluginImplementations(IHarvester):
         if not hasattr(harvester, 'extra_schema'):
             continue
-        fields[harvester.info()['name']] = harvester.extra_schema().keys()
+        fields[harvester.info()['name']] = list(harvester.extra_schema().keys())
     return fields