在 react-js 中使用 immutable-js 时使用 PropTypes

Question

我在 React 中使用 immutable-js 和 react-immutable-proptypes。

// CommentBox.jsx
getInitialState() {
    return {
        comments: Immutable.List.of(
            {author: 'Pete Hunt', text: 'Hey there!'},
            {author: 'Justin Gordon', text: 'Aloha from @railsonmaui'}
        )
    };
},
render(){
    console.log(this.state.comments.constructor);
    return (
      <div className='commentBox container'>
        <h1>Comments</h1>
        <CommentForm url={this.props.url} />
        <CommentList comments={this.state.comments} />
      </div>
    );
}


// CommentList.jsx
propTypes: {
    comments: React.PropTypes.instanceOf(Immutable.List),
},

// CommentStore.js
handleAddComment(comment) {
    this.comments.push(comment);
}

页面初始化时，没问题，一切正常，无警告。控制台日志显示 comments 是 function List(value)。当我添加新评论时，它看起来运行良好，但有一个警告

Warning: Failed propType: Invalid prop comments supplied to CommentList, expected instance of List. Check the render method of CommentBox.

并且控制台日志显示 comments 是 function Array()。那么，为什么 comments 构造函数会从 List 变为 Array？

并且我已经阅读 http://facebook.github.io/react/docs/advanced-performance.html#immutable-js-and-flux。

The messages store could keep track of the users and messages using two lists:
this.users = Immutable.List();
this.messages = Immutable.List();
It should be pretty straightforward to implement functions to process each payload type. For instance, when the store sees a payload representing a new message, we can just create a new record and append it to the messages list:
this.messages = this.messages.push(new Message({
  timestamp: payload.timestamp,
  sender: payload.sender,
  text: payload.text
});
Note that since the data structures are immutable, we need to assign the result of the push function to this.messages.

Answer 1

我来这里是为了寻找一个解决方案，允许将数组或来自 ImmutableJS 的任何类型的可迭代对象作为 prop 传递。以防其他人发现这有用，这是我想出的：

PropTypes.oneOfType([
  PropTypes.instanceOf(Array),
  PropTypes.instanceOf(Immutable.Iterable)
]).isRequired

Answer 2

您可以指定自定义验证器。

propName: function(props, propName, componentName) {
  if (!List.isList(props[propName]) && !Array.isArray(props[propName])) {
    return new Error(
      'Invalid prop `' + propName + '` supplied to' +
      ' `' + componentName + '`. Validation failed.'
    );
  }
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.2/immutable.min.js"></script>

在 react-js 中使用 immutable-js 时使用 PropTypes

Using PropTypes when immutable-js in react-js

javascript

reactjs

immutable.js