Author: adrian
Date: 2006-08-30 23:11:46 -0500 (Wed, 30 Aug 2006)
New Revision: 3687
Modified:
django/trunk/django/core/serializers/base.py
Log:
Fixed #2611 -- Fixed XML serializer to handle null datetime fields. Thanks for
reporting, [EMAIL PROTECTED]
Modified: django/trunk/django/core/serializers/base.py
===================================================================
--- django/trunk/django/core/serializers/base.py 2006-08-31 04:08:25 UTC
(rev 3686)
+++ django/trunk/django/core/serializers/base.py 2006-08-31 04:11:46 UTC
(rev 3687)
@@ -11,7 +11,7 @@
class SerializationError(Exception):
"""Something bad happened during serialization."""
pass
-
+
class DeserializationError(Exception):
"""Something bad happened during deserialization."""
pass
@@ -20,15 +20,15 @@
"""
Abstract serializer base class.
"""
-
+
def serialize(self, queryset, **options):
"""
Serialize a queryset.
"""
self.options = options
-
+
self.stream = options.get("stream", StringIO())
-
+
self.start_serialization()
for obj in queryset:
self.start_object(obj)
@@ -44,61 +44,65 @@
self.end_object(obj)
self.end_serialization()
return self.getvalue()
-
+
def get_string_value(self, obj, field):
"""
Convert a field's value to a string.
"""
if isinstance(field, models.DateTimeField):
- value = getattr(obj, field.name).strftime("%Y-%m-%d %H:%M:%S")
+ value = getattr(obj, field.name)
+ if value is None:
+ value = ''
+ else:
+ value = value.strftime("%Y-%m-%d %H:%M:%S")
elif isinstance(field, models.FileField):
value = getattr(obj, "get_%s_url" % field.name, lambda: None)()
else:
value = field.flatten_data(follow=None, obj=obj).get(field.name,
"")
return str(value)
-
+
def start_serialization(self):
"""
Called when serializing of the queryset starts.
"""
raise NotImplementedError
-
+
def end_serialization(self):
"""
Called when serializing of the queryset ends.
"""
pass
-
+
def start_object(self, obj):
"""
Called when serializing of an object starts.
"""
raise NotImplementedError
-
+
def end_object(self, obj):
"""
Called when serializing of an object ends.
"""
pass
-
+
def handle_field(self, obj, field):
"""
Called to handle each individual (non-relational) field on an object.
"""
raise NotImplementedError
-
+
def handle_fk_field(self, obj, field):
"""
Called to handle a ForeignKey field.
"""
raise NotImplementedError
-
+
def handle_m2m_field(self, obj, field):
"""
Called to handle a ManyToManyField.
"""
raise NotImplementedError
-
+
def getvalue(self):
"""
Return the fully serialized queryset.
@@ -109,7 +113,7 @@
"""
Abstract base deserializer class.
"""
-
+
def __init__(self, stream_or_string, **options):
"""
Init this serializer given a stream or a string
@@ -123,39 +127,39 @@
# deserialization starts (otherwise subclass calls to get_model()
# and friends might fail...)
models.get_apps()
-
+
def __iter__(self):
return self
-
+
def next(self):
"""Iteration iterface -- return the next item in the stream"""
raise NotImplementedError
-
+
class DeserializedObject(object):
"""
A deserialzed model.
-
+
Basically a container for holding the pre-saved deserialized data along
with the many-to-many data saved with the object.
-
+
Call ``save()`` to save the object (with the many-to-many data) to the
database; call ``save(save_m2m=False)`` to save just the object fields
(and not touch the many-to-many stuff.)
"""
-
+
def __init__(self, obj, m2m_data=None):
self.object = obj
self.m2m_data = m2m_data
-
+
def __repr__(self):
return "<DeserializedObject: %s>" % str(self.object)
-
+
def save(self, save_m2m=True):
self.object.save()
if self.m2m_data and save_m2m:
for accessor_name, object_list in self.m2m_data.items():
setattr(self.object, accessor_name, object_list)
-
- # prevent a second (possibly accidental) call to save() from saving
+
+ # prevent a second (possibly accidental) call to save() from saving
# the m2m data twice.
self.m2m_data = None
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