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Altered the code to avoid spanning more than one relation.

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This commit is contained in:
Xavier Ordoquy 2014-02-13 09:45:22 +01:00
parent 214ce0777d
commit be7183f196
1 changed files with 15 additions and 12 deletions
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25
rest_framework/serializers.py
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@ -950,24 +950,28 @@ class ModelSerializer(Serializer):
# Update an existing instance...
if instance is not None:
for key, val in attrs.items():
# Follow relations if needed
dest = instance
keys = key.split('.')
try:
for related_instance in keys[:-1]:
dest = getattr(dest, related_instance)
# Work on the current instance for this attribute
attr_instance = instance
# Raise an error if we span more than one relation
if len(keys) > 2:
self._errors[key] = 'Can not span more than a relation'
continue
# Mark the related instance as the one to save
if len(keys) == 2:
try:
attr_instance = getattr(instance, keys[0])
related_models_to_save[key] = attr_instance
except AttributeError:
self._errors[key] = self.error_messages['missing']
continue
# If there's a relation, mark the object to save
if len(keys) > 1:
related_models_to_save[key] = dest
# Assign the value
try:
setattr(dest, keys[-1], val)
setattr(attr_instance, keys[-1], val)
except ValueError:
self._errors[key] = self.error_messages['required']
@ -976,7 +980,6 @@ class ModelSerializer(Serializer):
for key, value in ((k, v) for k, v in attrs.items() if '.' in k):
self._errors[key] = 'You can not set dotted sources during creation.'
del attrs[key]
print value
instance = self.opts.model(**attrs)
# Any relations that cannot be set until we've