python - webpack bundle export 中的 React 组件库，用于运行时渲染

Question

我正在升级旧版 web2py (python) 应用程序以使用 React 组件。我正在使用 webpack 将 jsx 文件转换为缩小的 js 包。我希望能够使用:

ReactDOM.render(
  <ComponentA arg1="hello" arg2="world" />,
  document.getElementById('react-container')
);

其中 ComponentA 包含在 bundle 中，bundle 包含在 web2py View 中。问题是我无法在 View 中访问 ComponentA。以下示例将起作用:

<script>
var ComponentA = React.createClass({
     render: function() {
      var p = React.createElement('p', null, 'Passed these props: ',this.props.arg1, ' and ', this.props.arg2);
      var div = React.createElement('div', { className: 'my-test' }, p);
      return div;
  }
});

var component = React.createElement(ComponentA, {arg1:"hello", arg2:"world"})
ReactDOM.render(
  component,//I would rather use <ComponentA arg1="hello" arg2="world" />,
  document.getElementById('react-sample')
);

</script>

我看了exports-loader和 webpack-add-module-exports但我还没有让它工作。非常感谢任何帮助。

Answer 1

遇到this StackOverflow answer就解决了

首先确保您的 main.jsx 文件(它将导入所有组件)也导出它们:

import React from 'react';
import ReactDOM from 'react-dom';
import ComponentA from './components/A';
import ComponentB from './components/B';
import style from '../stylesheets/main.scss';

// This is how every tutorial shows you how to get started.
// However we want to use it "on-demand"
/* ReactDOM.render(
  <ComponentA arg1="hello" arg2="world" />,
  document.getElementById('react-container')
);*/

// ... other stuff here

// Do NOT forget to export the desired components!
export {
  ComponentA,
  ComponentB
};

然后确保使用 output.library ("more" info in the docs)在 webpack.config.js 文件中:

module.exports = {
    entry: {
        // 'vendor': ['bootstrap', 'analytics.js'],
        'main': './src/scripts/main.jsx'
    },
    output: {
        filename: './dist/scripts/[name].js',
        library: ['App', 'components'] 
// This will expose Window.App.components which will 
// include your exported components e.g. ComponentA and ComponentB
    }
// other stuff in the config
};

然后在 web2py View 中(确保包含构建文件，例如 main.js 和适当的容器):

<!-- Make sure you include the build files e.g. main.js -->
<!-- Some other view stuff -->
<div id="react-component-a"></div>
<div id="react-component-b"></div>
<script>
// Below is how it would be used. 
// The web2py view would output a div with the proper id 
// and then output a script tag with the render block.
ReactDOM.render(
  React.createElement(App.components.ComponentA, {arg1:"hello", arg2:"world"}),
  document.getElementById('react-component-a')
);
    
ReactDOM.render(
  React.createElement(App.components.ComponentB, {arg1:"hello", arg2:"world"}),
  document.getElementById('react-component-b')
);
</script>

注意:我决定在 View 中使用 vanilla react 而不是 JSX，因此无需在浏览器中进行额外的转译。