Handle serializing decimal.

Author: adamghill

django_unicorn/serializer.py

@@ -1,4 +1,5 @@
 import logging
+from decimal import Decimal
 from functools import lru_cache
 from typing import Dict, List
 
@@ -80,7 +81,7 @@ def _json_serializer(obj):
     Handle the objects that the `orjson` deserializer can't handle automatically.
 
     The types handled by `orjson` by default: dataclass, datetime, enum, float, int, numpy, str, uuid.
-    The types handled in this class: Django Model, Django QuerySet, any object with `to_json` method.
+    The types handled in this class: Django Model, Django QuerySet, Decimal, or any object with `to_json` method.
 
     TODO: Investigate other ways to serialize objects automatically.
     e.g. Using DRF serializer: https://www.django-rest-framework.org/api-guide/serializers/#serializing-objects
@@ -106,6 +107,8 @@ def _json_serializer(obj):
             return queryset_json
         elif PydanticBaseModel and isinstance(obj, PydanticBaseModel):
             return obj.dict()
+        elif isinstance(obj, Decimal):
+            return str(obj)
         elif hasattr(obj, "to_json"):
             return obj.to_json()
     except Exception as e:

tests/serializer/test_dumps.py

@@ -1,4 +1,5 @@
 import json
+from decimal import Decimal
 
 from django.db.models import (
     SET_NULL,
@@ -42,6 +43,13 @@ def test_int():
     assert expected == actual
 
 
+def test_decimal():
+    expected = '{"name":"123.1"}'
+    actual = serializer.dumps({"name": Decimal("123.1")})
+
+    assert expected == actual
+
+
 def test_string():
     expected = '{"name":"abc"}'
     actual = serializer.dumps({"name": "abc"})