Fix value_to_string to return string always

enumfields/fields.py

@@ -72,14 +72,8 @@ def from_db_value(self, value, expression, connection, *args):
         return self.to_python(value)
 
     def value_to_string(self, obj):
-        """
-        This method is needed to support proper serialization. While its name is value_to_string()
-        the real meaning of the method is to convert the value to some serializable format.
-        Since most of the enum values are strings or integers we WILL NOT convert it to string
-        to enable integers to be serialized natively.
-        """
         value = self.value_from_object(obj)
-        return value.value if value else None
+        return str(value.value) if value is not None else ''
 
     def get_default(self):
         if self.has_default():

tests/test_django_models.py

@@ -90,8 +90,8 @@ def test_serialization():
     ser = PythonSerializer()
     ser.serialize([m])
     fields = ser.getvalue()[0]["fields"]
-    assert fields["color"] == m.color.value
-    assert fields["taste"] == m.taste.value
+    assert fields["color"] == "r"
+    assert fields["taste"] == "4"
 
 
 @pytest.mark.django_db