1 files changed, 12 insertions, 0 deletions
diff --git a/api/opendc/util/json.py b/api/opendc/util/json.py
new file mode 100644
index 00000000..2ef4f965
--- /dev/null
+++ b/api/opendc/util/json.py
@@ -0,0 +1,12 @@
+import flask
+from bson.objectid import ObjectId
+
+
+class JSONEncoder(flask.json.JSONEncoder):
+    """
+    A customized JSON encoder to handle unsupported types.
+    """
+    def default(self, o):
+        if isinstance(o, ObjectId):
+            return str(o)
+        return flask.json.JSONEncoder.default(self, o)