如何在Yup.array中测试值的唯一性? [英] How to test for uniqueness of value in Yup.array?

问题描述

我的表单具有动态输入(管理员电子邮件)，但是检查唯一性失败:

I have form with dynamic amount of inputs (admin email) however checking for uniqueness fails:

      validationSchema={Yup.object().shape({
        adminEmails: Yup.array()
          .of(
            Yup.string()
              .notOneOf(Yup.ref('adminEmails'), 'E-mail is already used')

这里最好的方法是什么? 仅供参考，我使用Formik作为表单助手.

What is best approach here? FYI, as a form helper I use Formik.

推荐答案

尝试一下:

Yup.addMethod(Yup.array, 'unique', function(message, mapper = a => a) {
    return this.test('unique', message, function(list) {
        return list.length  === new Set(list.map(mapper)).size;
    });
});

然后像这样使用它:

const headersSchema = Yup.object().shape({
    adminEmails: Yup.array().of(
        Yup.string()
    )
    .unique('email must be unique')
})

这篇关于如何在Yup.array中测试值的唯一性?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！