如何在 React-bootstrap 中创建带有多行单元格的表格? [英] How to create table with multiline cells in React-bootstrap?

问题描述

我想创建一些单元格包含多行的表格.如果我这样做就行了:

I want to create table where some cells contain several lines. It's work if I do it:

               <Table bordered>
                    <thead>
                        <tr>
                            <th>Date</th>
                            <th>Analysed  ID</th>
                            <th>Analysed Name</th>
                            <th>Solve To change</th>
                        </tr>
                    </thead>
                    <tbody>
                        <tr>
                            <td rowSpan="3">Date</td>
                        </tr>
                        <tr>
                            <td>ID</td>
                            <td>Name</td>
                            <td>Decision</td>
                        </tr>
                        <tr>
                            <td>ID</td>
                            <td>Name</td>
                            <td>Decision</td>
                        </tr>

                    </tbody>

                </Table>

我明白了:多行单元格表格

现在我想在一个组件中添加我的 3 个TR"标签，因为在我想使用 for-cycle 创建许多这样的组件之后.但是组件必须返回一个封闭标签中的内容.我试图将我的 3 个tr"包含在一个父tr"中，但出现错误.我可以在这里做什么?

And now I want to add my 3 "TR" tags in one component, because after I want use for-cycle to create many such components. But components must return content in one closed tag. I tried to contain my 3 "tr" in one parent "tr", but I got error. What can I do here?

推荐答案

创建一个返回三个元素的 React 组件而不将它们包装在另一个元素中是不可能的，例如 div.否则，您将收到以下错误:

It is not possible to create a React Component that returns three elements without wrapping them in another element, such as a div. Otherwise, you'll get the following error:

A valid ReactComponent must be returned. You may have returned undefined, an array or some other invalid object.

您的情况有点特殊，因为您不能将 div 作为 table 或 tbody 的直接子代，所以有问题...

Your case here is a bit special, because you cannot have div's as the immediate child of table or tbody, so that's a problem...

您可以做的是创建一个返回数组的类函数.像这样:

What you can do however, is to create a class function that returns an array. Like this:

class MyApp extends React.Component {

  getTr = () => {
    return [
      <tr key={0}>
        <td rowSpan="3">Date</td>
      </tr>,
      <tr key={1}>
        <td>ID</td>
        <td>Name</td>
        <td>Decision</td>
      </tr>,
      <tr key={2}>
        <td>ID</td>
        <td>Name</td>
        <td>Decision</td>
      </tr>
    ];
  }

  render() {
    return (
      <table className="table">
        <thead>
          <tr>
            <th>Date</th>
            <th>Analysed  ID</th>
            <th>Analysed Name</th>
            <th>Solve To change</th>
          </tr>
        </thead>
        <tbody>
          {this.getTr()}
          {this.getTr()}
          {this.getTr()}
        </tbody>
      </table>
    );
  }
}

ReactDOM.render(<MyApp />, document.getElementById("app"));

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="app"></div>

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