无法使用 pubsub 组件将数据从 Product 组件传递到 Cartlist 组件。我需要将列表对象传递给 Cart 组件。产品组件呈现产品列表。因此，每个项目都必须作为props传递给 Cart 组件点击。

import React from 'react';
import PubSub from 'pubsub-js';
import Productlist from '../component/productlist';
import Addtocart from '../component/addtocart';

var createReactClass = require('create-react-class');
var Product = createReactClass({
    addtocart:function(data){
        console.log(data);
        PubSub.publish('add-cart','helloworld')
    },

    render:function(){
        var list = this.props.dataname;
        return(
            <div className="card hoverable">
                <div className="card-image">
                    <img src={list.image} alt={list.name} className='shop-img' />
                </div>
                <div className="card-content">
                    <span className="card-title blue-text text-darken-2">{list.price}&nbsp;{list.currency}</span>
                    <p>{list.name}</p>
                </div>
                <Addtocart onClick={() => this.addtocart(list)} />
            </div>
        )
    }

})

export default Product;

购物车列表组件

import React from 'react';
import PubSub from 'pubsub-js';

var createReactClass = require('create-react-class');
var Cartlist = createReactClass({

    componentWillMount:function(data){
     PubSub.subscribe('add-cart',function(data){
          console.log(data);
      });
    },

    // addtocart:function(data){
    //     console.log(data);
    // },

    render:function(){
        var list = this.props.dataname;
        return(
            <div className="card hoverable">
            </div>
        )
    }

})

export default Product;

演示问题的演示链接http://codesandbox.io/s/x7p856zmjp