async-props-promise
v0.4.5
Published
Promise based component data fetching for React Router
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4
Maintainers
dortzurReadme
AsyncProps for React Router
This is a shameless ripoff of Async Props This library is promise based which allows for async/await goodness. View transitions happen immediately, async props are then populated when the promise resolves.
Installation
Using npm:
$ npm install async-props-promiseThen with a module bundler like webpack, use as you would anything else:
// using an ES6 transpiler, like babel
import AsyncProps from 'async-props-promise'The UMD build is also available on npmcdn:
<script src="https://npmcdn.com/async-props-promise/umd/AsyncProps.min.js"></script>You can find the library on window.AsyncProps.
Notes
This is pre-release, it's pretty close though. If you are using it then you are a contributor. Please add tests with all pull requests.
Usage
import { Router, Route } from 'react-router'
import AsyncProps from 'async-props-promise'
import React from 'react'
import { render } from 'react-dom'
import tacoFetcher from './taco-fetcher';
class App extends React.Component {
// 1. define a `loadProps` static method
static async loadProps(params) {
const tacos = await tacoFetcher.getTacos();
return {tacos};
}
render() {
if(!this.props.tacos){
return <div>Loading...</div>
}
// 2. access data as props :D
const tacos = this.props.tacos;
return (
<div>
<ul>
{tacos.map(taco => (
<li>{taco}</li>
))}
</ul>
</div>
)
}
}
// 3. Render `Router` with AsyncProps middleware
render((
<Router render={(props) => <AsyncProps {...props}/>}>
<Route path="/" component={App}/>
</Router>
), el)Server
import { renderToString } from 'react-dom/server'
import { match, RoutingContext } from 'react-router'
import AsyncProps, { loadPropsOnServer } from 'async-props-promise'
app.get('*', (req, res) => {
match({ routes, location: req.url }, (err, redirect, renderProps) => {
// 1. load the props
loadPropsOnServer(renderProps, (err, asyncProps, scriptTag) => {
// 2. use `AsyncProps` instead of `RoutingContext` and pass it
// `renderProps` and `asyncProps`
const appHTML = renderToString(
<AsyncProps {...renderProps} {...asyncProps} />
)
// 3. render the script tag into the server markup
const html = createPage(appHTML, scriptTag)
res.send(html)
})
})
})
function createPage(html, scriptTag) {
return `
<!doctype html>
<html>
<!-- etc. --->
<body>
<div id="app">${html}</div>
<!-- its a string -->
${scriptTag}
</body>
</html>
`
}API
Please refer to the example, as it exercises the entire API. Docs will come eventually :)