react-context-connector

React HOC to the new Context API to keep the use as simple as React-Redux connect HOC.

Usage

connectContext(ContextProvider, mapContextToProps)

Generates a HOC to wrap a component with context values in props.

Parameters

ContextProvider: Object, an Object with Consumer attribute, like the Context object or a Custom Provider

mapContextToProps: function, a functiona that receives the context from Context.Consumer and returns a object to be used as props for the wrapped component.

Returns: Component, A HOC which pass context state into props to child component.

Example

Create your Context Provider

const CounterContext = React.createContext();

class CounterProvider extends Component {
  state = {
    count: 0,
    incrementCount: () => {
      ...
    },

    decrementCount: () => {
      ...
    },
  }

  render() {
    return (
    <CounterContext.Provider value={this.state}>
      {this.props.children}
    </CounterContext.Provider>
    );
  }
}

CounterProvider.Consumer = CounterContext.Consumer;

Create your component and connect it to the Context

import connectContext from 'react-context-connector';
import CounterProvider from './CounterProvider';

const CounterDisplay = ({ value }) => (
  <div>
    Counter: {value}
  </div>
);

CounterDisplay.propTypes = {
  value: PropTypes.number,
};

// map context state and functions to component props
const mapContextToProps = context => ({
  value: context.count,
});

const CounterDisplayWithContext = connectContext(CounterProvider,mapContextToProps)(CounterDisplay);

export default CounterDisplayWithContext;

Create your App and wrap with the Context Provider

const App = () => (
  <CounterProvider>
    <div>
      <CounterDisplay />
      <CounterButtons />
    </div>
  </CounterProvider>
);

render(<App />, document.getElementById("root"));

Check the example folder for more details.

BrOrlandi / react-context-connector