@ -32,7 +32,11 @@ def jsonify(self, parser):
if field_type in ('one2many', 'many2many'):
res[field_name] = rec[field_name].jsonify(subparser)
elif field_type == 'many2one':
res[field_name] = rec[field_name].jsonify(subparser)[0]
data = rec[field_name].jsonify(subparser)
if data:
res[field_name] = data[0]
else:
res[field_name] = None
raise UserError('Wrong parser configuration')