Created
October 11, 2018 03:33
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| import time | |
| import random | |
| from flask import Flask, Response, stream_with_context | |
| app = Flask(__name__) | |
| head = """ | |
| <script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script> | |
| <script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script> | |
| """ | |
| body = """ | |
| <div id="root"></div> | |
| <script> | |
| class Data extends React.Component { | |
| constructor(props) { | |
| super(props) | |
| this.state = { | |
| data: [], | |
| } | |
| } | |
| append(d) { | |
| const data = this.state.data.slice() | |
| data.push(d) | |
| this.setState({data}) | |
| } | |
| render() { | |
| return this.state.data.sort().map(d => | |
| React.createElement('div', {key: d}, d) | |
| ) | |
| } | |
| } | |
| const component = ReactDOM.render( | |
| React.createElement(Data), | |
| document.getElementById('root'), | |
| ) | |
| </script> | |
| """ | |
| @app.route('/') | |
| def index(): | |
| data = list(range(10)) | |
| random.shuffle(data) | |
| def generate(): | |
| yield '<html><head>{}</head><body>'.format(head) | |
| yield body | |
| for d in data: | |
| time.sleep(1) | |
| yield '<script>component.append({})</script>'.format(d) | |
| yield '</body></html>' | |
| return Response(stream_with_context(generate())) | |
| app.debug = True | |
| app.run() |
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