Struggling to refactor the front end React Redux
case with React Hooks. I can’t manage to list the input items down. Pointers will be more than welcome!
// Redux:
const ADD = 'ADD';
const addMessage = (message) => {
return {
type: ADD,
message: message
}
};
const messageReducer = (state = [], action) => {
switch (action.type) {
case ADD:
return [
...state,
action.message
];
default:
return state;
}
};
const store = Redux.createStore(messageReducer);
// React:
const Provider = ReactRedux.Provider;
const connect = ReactRedux.connect;
// Change code below this line
const Presentational = (props) => {
const [input, setInput] = React.useState("");
const submitMessage = () => {
props.submitNewMessage(input)
}
return (
<div>
<h2>Type in a new Message:</h2>
<input
value={input}
onChange={e => setInput(e.target.value)}/><br/>
<button onClick={submitMessage}>Submit</button>
<ul>
{props.messages.map( (message, idx) => {
return (
<li key={idx}>{message}</li>
)
})
}
{/* {this.props.messages.map( (message, idx) => {
return (
<li key={idx}>{message}</li>
)
})
} */}
</ul>
</div>
);
};
// class Presentational extends React.Component {
// constructor(props) {
// super(props);
// this.state = {
// input: '',
// // messages: []
// }
// this.handleChange = this.handleChange.bind(this);
// this.submitMessage = this.submitMessage.bind(this);
// }
// handleChange(event) {
// this.setState({
// input: event.target.value
// });
// }
// submitMessage() {
// this.props.submitNewMessage(this.state.input);
// this.setState({
// input: '',
// // messages: this.state.messages.concat(this.state.input)
// });
// }
// render() {
// return (
// <div>
// <h2>Type in a new Message:</h2>
// <input
// value={this.state.input}
// onChange={this.handleChange}/><br/>
// <button onClick={this.submitMessage}>Submit</button>
// <ul>
// {/* {this.state.messages.map( (message, idx) => { */}
// {this.props.messages.map( (message, idx) => {
// return (
// <li key={idx}>{message}</li>
// )
// })
// }
// </ul>
// </div>
// );
// }
// };
// Change code above this line
const mapStateToProps = (state) => {
return {messages: state}
};
const mapDispatchToProps = (dispatch) => {
return {
submitNewMessage: (message) => {
dispatch(addMessage(message))
}
}
};
const Container = connect(mapStateToProps, mapDispatchToProps)(Presentational);
const AppWrapper = () => {
return (
<Provider store={store}>
<Container/>
</Provider>
);
};
// class App extends React.Component {
// render() {
// return (
// <Provider store={store}>
// <Container/>
// </Provider>
// );
// }
// };
ReactDOM.render(<AppWrapper />, document.getElementById('app'));```