reactjs - 是的，验证需要两个字段之一(其中一个是数字数组)

Question

我正在将 Formik 与 Yup 和 Typescript 一起使用，并将其作为表单的初始值...

const initialValues = {
    title: "",
    overview: "",
    related_items_id: [],
    short_desc: ""
};

这是我的架构......

const formSchema = Yup.object().shape({
    title: Yup.string()
        .trim()
        .required("This field is required."),
    overview: Yup.string().required("This field is required."),
    related_items_id: Yup.array()
        .min(1, "Pick at least 1 item")
        .of(Yup.number().required("This field is required.")),
    short_desc: Yup.string().required("This field is required.")
});

现在，我需要 related_items_id数组或 short_desc需要，如果一个填充了数据，另一个不需要并使用 Versa，我如何使用类似 when 的东西来实现这一点是吗？

这是我创建的一个代码和框，用于显示我在尝试使用 when 时遇到的错误。是的方法...

https://codesandbox.io/s/formik-yup-required-one-or-the-other-nextjs-gujqv

Answer 1

您可以通过在 related_items_id 上创建一个相互依赖的类型来实现这一点。和 short_desc

export interface BaseType {
    title: string;
    overview: string;
}

interface RelatedItemsType extends BaseType {
  related_items_id?: Array<any>;
  short_desc?: never;
}

interface ShortDescType extends BaseType {
  related_items_id?: never;
  short_desc?: string;
}

export type InitialValueType = RelatedItemsType | ShortDescType;

你可以像这样使用它

const initialValues: InitialValueType = {
    title: "",
    overview: "",
    related_items_id: [],
    // short_desc: "" no longer required
};

要有条件地设置您的 formSchema，请查看文档 Conditionally Set Required Field (Yup) .

const basicFormSchema = Yup.object().shape(
    {
      title: Yup.string()
        .trim()
        .required("This field is required."),
      overview: Yup.string().required("This field is required."),
      related_items_id: Yup.array().when("short_desc", {
        is: "",
        then: Yup.array()
          .min(1, "Pick at least 1 item")
          .of(Yup.number().required("This field is required.")),
        otherwise: Yup.array()
      }),
      short_desc: Yup.string().when("related_items_id", {
        is: relatedItemsId => relatedItemsId.length === 0,
        then: Yup.string().required("This field is required."),
        otherwise: Yup.string()
      })
    },
    [["related_items_id", "short_desc"]]
  );