def toFieldValue(self, value):
"""See interfaces.IDataConverter"""
if value is None or value == '':
# When no new file is uploaded, send a signal that we do not want
# to do anything special.
return interfaces.NOT_CHANGED
if isinstance(value, zope.publisher.browser.FileUpload):
# By default a IBytes field is used for get a file upload widget.
# But interfaces extending IBytes do not use file upload widgets.
# Any way if we get a FileUpload object, we'll convert it.
# We also store the additional FileUpload values on the widget
# before we loose them.
self.widget.headers = value.headers
self.widget.filename = value.filename
try:
seek = value.seek
read = value.read
except AttributeError as e:
raise ValueError(_('Bytes data are not a file object'), e)
else:
seek(0)
data = read()
if data or getattr(value, 'filename', ''):
return data
else:
return self.field.missing_value
else:
return util.toBytes(value)
def toFieldValue(self, value):
"""See interfaces.IDataConverter"""
if value is None or value == '':
# When no new file is uploaded, send a signal that we do not want
# to do anything special.
return interfaces.NOT_CHANGED
if isinstance(value, zope.publisher.browser.FileUpload):
# By default a IBytes field is used for get a file upload widget.
# But interfaces extending IBytes do not use file upload widgets.
# Any way if we get a FileUpload object, we'll convert it.
# We also store the additional FileUpload values on the widget
# before we loose them.
self.widget.headers = value.headers
self.widget.filename = value.filename
try:
seek = value.seek
read = value.read
except AttributeError as e:
raise ValueError(_('Bytes data are not a file object'), e)
else:
seek(0)
data = read()
if data or getattr(value, 'filename', ''):
return data
else:
return self.field.missing_value
else:
return util.toBytes(value)