Question

我有一个包含动态字段（答案）的表格。我正在使用 Formik 和是进行验证。一个答案是对象{text: string, is_correct: boolean}。我需要制定验证模式，至少有一个答案应该具有 is_correct：true 在这种情况下如何进行验证？

function answersSchema (rules) {
    let {
        QUIZ_ANSWER_MAX_LENGTH,
        QUIZ_ANSWER_MIN_LENGTH,
    } = rules;
    return Yup.object().shape({
        text: Yup.string()
            .min(QUIZ_ANSWER_MIN_LENGTH, 'Too Short!')
            .max(QUIZ_ANSWER_MAX_LENGTH, 'Too Long!').required('Text of answer is required'),
        is_correct: Yup.boolean().required()
    })
}

export function setQuizSchema(rules) {
    let {
        QUIZ_QUESTION_MAX_LENGTH,
        QUIZ_QUESTION_MIN_LENGTH,
        QUIZ_DESCRIPTION_MAX_LENGTH,
        QUIZ_DESCRIPTION_MIN_LENGTH,
        QUIZ_MAX_COUNT_OF_ANSWERS,
        QUIZ_MIN_COUNT_OF_ANSWERS,
    } = rules;
    return Yup.object().shape({
        question: Yup.string()
            .min(QUIZ_QUESTION_MIN_LENGTH, 'Too Short!')
            .max(QUIZ_QUESTION_MAX_LENGTH, 'Too Long!')
            .required('Required'),
        description: Yup.string()
            .min(QUIZ_DESCRIPTION_MAX_LENGTH, 'Too Short!')
            .max(QUIZ_DESCRIPTION_MIN_LENGTH, 'Too Long!'),
        answers: Yup.array().of(answersSchema(rules))
            .min(QUIZ_MIN_COUNT_OF_ANSWERS, `The quiz should have a minimum of ${QUIZ_MIN_COUNT_OF_ANSWERS} answers`)
            .max(QUIZ_MAX_COUNT_OF_ANSWERS, `The quiz should have a maximum of ${QUIZ_MAX_COUNT_OF_ANSWERS} answers`)
    })
}

Answer 1

您可以在yup模式上使用 test 方法，因此您的代码可能是这样的

...
return Yup.object().shape({
        question: Yup.string()
            .min(QUIZ_QUESTION_MIN_LENGTH, 'Too Short!')
            .max(QUIZ_QUESTION_MAX_LENGTH, 'Too Long!')
            .required('Required'),
        description: Yup.string()
            .min(QUIZ_DESCRIPTION_MAX_LENGTH, 'Too Short!')
            .max(QUIZ_DESCRIPTION_MIN_LENGTH, 'Too Long!'),
        answers: Yup.array().of(answersSchema(rules))
            .min(QUIZ_MIN_COUNT_OF_ANSWERS, `The quiz should have a minimum of ${QUIZ_MIN_COUNT_OF_ANSWERS} answers`)
            .max(QUIZ_MAX_COUNT_OF_ANSWERS, `The quiz should have a maximum of ${QUIZ_MAX_COUNT_OF_ANSWERS} answers`)
            .test('test-name', 'custom error message', answers => {
                return answers.some(answer => answer.is_correct)
             })
    })

作为旁注，最好将const用于不会更改的声明，例如answersSchema函数中的变量声明。

如何用Yup验证在对象数组中至少一个对象键具有真实值？

1 个答案: