def update(self, instance: HierarkeyProxy, validated_data):
for attr, value in validated_data.items():
if value is None:
instance.delete(attr)
elif instance.get(attr, as_type=type(value)) != value:
instance.set(attr, value)
return instance
def update(self, instance: HierarkeyProxy, validated_data):
for attr, value in validated_data.items():
if isinstance(value, FieldFile):
# Delete old file
fname = instance.get(attr, as_type=File)
if fname:
try:
default_storage.delete(fname.name)
except OSError: # pragma: no cover
logger.error('Deleting file %s failed.' % fname.name)
# Create new file
newname = default_storage.save(self.get_new_filename(value.name), value)
instance.set(attr, File(file=value, name=newname))
self.changed_data.append(attr)
elif isinstance(self.fields[attr], UploadedFileField):
if value is None:
fname = instance.get(attr, as_type=File)
if fname:
try:
default_storage.delete(fname.name)
except OSError: # pragma: no cover
logger.error('Deleting file %s failed.' % fname.name)
instance.delete(attr)
else:
# file is unchanged
continue
elif value is None:
instance.delete(attr)
self.changed_data.append(attr)
elif instance.get(attr, as_type=type(value)) != value:
instance.set(attr, value)
self.changed_data.append(attr)
return instance