React Map返回的对象错误作为React子元素无效 [英] react map returned error of Objects are not valid as a React child

问题描述

我无法使用lodash的地图渲染jxs.我的渲染方法中有这个

I failed to render jxs using map of lodash. I have this in my render method

return (
    <div>
    {map(groupedByMonths, (obj, index) => 
        <div className="panel">
        <div className="panel-heading">
        {obj}
        </div>
        <div>{obj.price}</div>
        </div>)}
    </div>
    )

但是我得到了Objects are not valid as a React child的错误groupedByMonths结构看起来像这样

But I got error of Objects are not valid as a React child The groupedByMonths structure look like this

{
    "April": [
        {
            "price": 0,
        },
        {
            "price": 12
        },
        {
            "price": 200
        }
    ]
}

推荐答案

不知道如何使用lodash map做到这一点，我可以建议这样做:

Don't know how to do this with lodash map, i can suggest this:

{Object.keys(groupedByMonths).map((obj, index) => 
     <div className="panel">
         <div className="panel-heading">
             {obj}
         </div>
         {groupedByMonths[obj].map((el, i) => <div key={i}> {el.price} </div>)}
     </div>)
}

当我们使用Object.keys(groupedByMonths)时，它将返回一个包含所有键的array，我们可以在其上使用map.要打印键，请使用{obj}，并打印值，请使用{groupedByMonths[obj]}.

When we use Object.keys(groupedByMonths) it will return an array that will contain all the keys, and we can use map on that. To print the key use {obj} and to print the values use {groupedByMonths[obj]}.

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