Fixed #9522 -- Modified handling of values in base serializer so that field subclasses can define their own value_to_string() method for serialization. Thanks to Alex Koshelev for the report and initial patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10554 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/serializers/python.py

@@ -7,15 +7,15 @@ other serializers.
 from django.conf import settings
 from django.core.serializers import base
 from django.db import models
-from django.utils.encoding import smart_unicode
+from django.utils.encoding import smart_unicode, is_protected_type
 
 class Serializer(base.Serializer):
     """
     Serializes a QuerySet to basic Python objects.
     """
-    
+
     internal_use_only = True
-    
+
     def start_serialization(self):
         self._current = None
         self.objects = []
@@ -35,7 +35,14 @@ class Serializer(base.Serializer):
         self._current = None
 
     def handle_field(self, obj, field):
-        self._current[field.name] = smart_unicode(getattr(obj, field.name), strings_only=True)
+        value = field._get_val_from_obj(obj)
+        # Protected types (i.e., primitives like None, numbers, dates,
+        # and Decimals) are passed through as is. All other values are
+        # converted to string first.
+        if is_protected_type(value):
+            self._current[field.name] = value
+        else:
+            self._current[field.name] = field.value_to_string(obj)
 
     def handle_fk_field(self, obj, field):
         related = getattr(obj, field.name)

django/core/serializers/xml_serializer.py

@@ -65,11 +65,9 @@ class Serializer(base.Serializer):
             "type" : field.get_internal_type()
         })
 
-        # Get a "string version" of the object's data (this is handled by the
-        # serializer base class).
+        # Get a "string version" of the object's data.
         if getattr(obj, field.name) is not None:
-            value = self.get_string_value(obj, field)
-            self.xml.characters(smart_unicode(value))
+            self.xml.characters(field.value_to_string(obj))
         else:
             self.xml.addQuickElement("None")