def is_url(value):

    if value is None:
        return

    if not re.match(r'^(http(s)?:)?//[^.]+\..+$', value):
        return c('url')
Launch the RequestApproval flow on the backend.
dataset/ETHPy150Open heiskr/sagefy/server/modules/validations.py/is_url--crossover with--dataset/ETHPy150Open google/grr/grr/gui/plugins/acl_manager.py/HuntApprovalRequestRenderer.Layout