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react-redux-resolve

v1.0.2

Published

Experimental library to universally resolve your component's initial data.

Downloads

6

Readme

React Redux Resolve

Build Status Coverage Status

Experimental library to universally resolve your component's initial data. Per component you can specify a resolver. On the client side, the resolver is executed in componentDidMount() and on the server-side once you call waitForResolves(renderProps, store). This makes server-side rendering easy to implement!

import { resolve } from 'react-redux-resolve';

@resolve(({ dispatch }) => dispatch(fetchSandwich()))
class MyComponent extends Component {
	render() {
		const { sandwich } = this.props;

		return (
			<Sandwich sandwich={sandwich} />
		);
	}
}

Where fetchSandwich() is something like the below (please note the example doesn't handle errors). This requires the redux-thunk middleware:

function fetchSandwich() {
	return (dispatch) => {
		dispatch({
			type: 'FETCH_SANDWICH_STARTED',
			sandwich: sandwich
		});

		return fetch('http://example.com/api/sandwich')
			.then((response) => response.json())
			.then((sandwich) => {				
				dispatch({
					type: 'FETCH_SANDWICH_SUCCEEDED',
					sandwich: sandwich
				});
			});
	};
}

Now, say you're rendering your app on the server, you can easily access the @resolve(). You can do this by accessing .resolves on the components. We've created a helper method called waitForResolves(renderProps, store) to do this:

import { waitForResolves } from 'react-redux-resolve';

// Set up your server-side rendering like you normally would do.

match({ routes, location }, (error, redirectLocation, renderProps) => {
	if (redirectLocation) {
		// TODO: 3xx
	}
	else if (error) {
		// TODO: handle error
	}
	else if (!renderProps) {
		// TODO: 404
	}
	else {
		// Here we call the helper method `waitForResolves`. It calls
		// all your components's resolve methods and returns a promise
		// which is resolved once all
		waitForResolves(renderProps, store)
			.then(() => {
				// TODO: render html
			});
	}
});

API

resolve(resolver)

@resolve(({ dispatch }) => dispatch(..))
class MyComponent extends Component { };

resolver receives an object with the following keys as argument:

  • dispatch: the store's dispatch function
  • getState: the store's getState function
  • history: the history object from your router
  • params: the params object from the route
  • query: the query object from the route

Please note resolve() returns a new component wrapped with the target component, similar to connect(). To use resolve() in ES5, try the following:

MyComponent = resolve(function(obj) {
	return obj.dispatch(..);
})(MyComponent);