symfony5之form表单属性: 这个主要是记录一下链接，还没怎么整理，感觉基本概念网上讲的很详细了: https://symfony.com/doc/current/form/form_customization.html#form-label-form-view-label-variables

symfony5之form表单约束: https://symfony.com/doc/current/reference/constraints/All.html#constraints