def _process_form_value(self, form):
posted = form._cw.form
if self.input_name(form, u'__detach') in posted:
# drop current file value on explictily asked to detach
return None
try:
value = posted[self.input_name(form)]
except KeyError:
# raise UnmodifiedField instead of returning None, since the later
# will try to remove already attached file if any
raise UnmodifiedField()
# value is a 2-uple (filename, stream) or a list of such
# tuples (multiple files)
try:
if isinstance(value, list):
value = value[0]
form.warning('mutiple files provided, however '
'only the first will be picked')
filename, stream = value
except ValueError:
raise UnmodifiedField()
# XXX avoid in memory loading of posted files. Requires Binary handling changes...
value = Binary(stream.read())
if not value.getvalue(): # usually an unexistant file
value = None
else:
# set filename on the Binary instance, may be used later in hooks
value.filename = normalize_filename(filename)
return value
def _process_form_value_with_suffix(self, form, suffix=u''):
""" add suffix parameter & use it """
posted = form._cw.form
if self.input_name(form, u'__detach') in posted:
# drop current file value on explictily asked to detach
return None
try:
value = posted[self.input_name(form, suffix)]
except KeyError:
# raise UnmodifiedField instead of returning None, since the later
# will try to remove already attached file if any
raise ff.UnmodifiedField()
# value is a 2-uple (filename, stream)
try:
filename, stream = value
except ValueError:
raise ff.UnmodifiedField()
# XXX avoid in memory loading of posted files. Requires Binary handling changes...
value = Binary(stream.read())
if not value.getvalue(): # usually an unexistant file
value = None
else:
# set filename on the Binary instance, may be used later in hooks
value.filename = ff.normalize_filename(filename)
return value