@json_view(permission='update_milestone', validators=(validate_file_upload, validate_plan_not_terminated))
def collection_post(self):
    self.update_modified_dates()
    return super(PlanMilestoneDocumentResource, self).collection_post()
@json_view(permission='update_milestone', validators=(validate_file_upload, validate_plan_not_terminated))
def collection_post(self):
    self.update_modified_dates()
    return super(PlanMilestoneDocumentResource, self).collection_post()