antd From表单的校验常用代码

          form.validateFields(['StaffLevel'])//立即调用指定表单的item字段的校验
          form.getFieldValue('StaffLevel')//获取值
From item的校验规则：
 GradeLevel: [
      {
        required: false,
        validator(rule, text) { //自定义规则


          const isStaffLevel = form.getFieldValue('StaffLevel');
          const isTargetLevel = form.getFieldValue('TargetLevel');


          if (isTargetLevel.length == 0 && isStaffLevel == undefined) {
            // return Promise.resolve();
            return Promise.reject(`GradeLevel undefined!`);
          }

          if (isTargetLevel.length == 0 && isStaffLevel.length == 0) {
            // return Promise.resolve();
            return Promise.reject(`GradeLevel.length == 0!`);
          }


        }
      }
    ],