javascript - React Redux 失败的 prop 类型 : Required prop was not specified

Question

我在尝试使用 React 学习 Redux 时遇到了一些失败的 prop 类型问题。 问题是我想创建一个带有标题和一些文本的注释，但由于 Failed 属性类型，仅会显示标题。

警告:

warning.js:36 Warning: Failed prop type: Required prop `notes[0].text` was not specified in `NoteList`.
in NoteList (created by Connect(NoteList))
in Connect(NoteList) (created by App)
in div (created by App)
in App
in Provider

warning.js:36 Warning: Failed prop type: Required prop `text` was not specified in `Note`.
in Note (created by NoteList)
in NoteList (created by Connect(NoteList))
in Connect(NoteList) (created by App)
in div (created by App)
in App
in Provider

ListNotes.js:

import { connect } from 'react-redux'
import NotesList from '../components/NotesList'

const mapStateToProps = (state) => {
    return {
        notes: state.notes
    }
}

const ListNotes = connect(
    mapStateToProps
)(NotesList)

export default ListNotes

NotesList.js:

import React, { PropTypes } from 'react'
import Note from './Note'

const NoteList = ({ notes }) => {
    return (
        <ul>
            {notes.map(note =>
                 <note
                     key={note.id}
                     {...note}
                 />
            )}
        </ul>
    )
}


NoteList.propTypes = {
    notes: PropTypes.arrayOf(PropTypes.shape({
        id: PropTypes.number.isRequired,
        title: PropTypes.string.isRequired,
        text: PropTypes.string.isRequired
    }).isRequired).isRequired
}

export default NoteList

Note.js:

import React, { PropTypes } from 'react'

const Note = ({title, text}) => {
    return (
        <li>
            <h1>{title}</h1>
            <p>{text}</p>
        </li>
    )
}

Note.propTypes = {
    title: PropTypes.string.isRequired,
    text: PropTypes.string.isRequired
}

export default Note

Answer 1

检查state.notes中的内容。您可以记录它或在某处设置断点并使用浏览器的调试器。

该数组中的对象似乎没有 text 属性，或者它设置为 undefined 或 null。您可能在应该设置该值的地方出现拼写错误。

如果您看到了标题，那么其他一切似乎都按顺序进行。