i was trying to migrate react-redux
v5.X.X
to v6.0.0
and there dosent seem to be any documentation for it.
i am using following versions :
"react": "^16.4.2"
"redux": "^4.0.0"
"react-redux": "^6.0.0"
the official change log says.
Passing store as a prop to a connected component is no longer supported. Instead, you may pass a custom context={MyContext} prop to both and . You may also pass {context : MyContext} as an option to connect. link is here
here is my root index.jsx
import React from 'react';
import ReactDOM from 'react-dom';
import { configureStore, history } from './Store';
import App from './App.hot';
import 'antd/dist/antd.min.css';
const reduxStore = configureStore();
ReactDOM.render(<App store={reduxStore} history={history} />, document.getElementById('root'));
here is my app.jsx
(root component)
import React from 'react';
import PropTypes from 'prop-types';
import { Provider, connect } from 'react-redux';
import { bindActionCreators } from 'redux';
import { ConnectedRouter } from 'connected-react-router';
import Layout from './Layout';
class App extends React.Component {
static propTypes = {
store: PropTypes.object.isRequired,
history: PropTypes.object.isRequired,
};
render() {
const { store, profile, history } = this.props;
return (
<main className="app-wrapper">
// what i understand from change log is this part
// i need to pass context instead of store as props.
<Provider store={store}>
<ConnectedRouter history={history}>
<Layout user={profile} />
</ConnectedRouter>
</Provider>
</main>
);
}
}
function mapStateToProps(store) {
return {
...
};
}
function mapDispatchToProps(dispatch) {
return bindActionCreators({
...
}, dispatch);
}
export default connect(mapStateToProps, mapDispatchToProps)(App);
as per change log i created context
and passed it down to the provider
const storeContext = React.createContext(reduxStore);
here is my render
function after that change
render() {
const { store, profile, history } = this.props;
return (
<main className="app-wrapper">
<Provider context={storeContext}>
<ConnectedRouter history={history}>
<Layout user={profile} />
</ConnectedRouter>
</Provider>
</main>
);
}
passing store
as props
to provider
gives following error
Passing redux store in props has been removed and does not do anything. To use a custom Redux store for specific components, create a custom React context with React.createContext(), and pass the context object to React-Redux's Provider and specific components like: . You may also pass a {context : MyContext} option to connect
and passing as context
gives following error
Could not find "store" in the context of "Connect(App)". Either wrap the root component in a , or pass a custom React context provider to and the corresponding React context consumer to Connect(App) in connect options.
i did not find any documentation expect this redux history document here it tells all the problems and solutions for the problem in react-redux and how the context api fixed it. but i am not sure how to actually implement it in real project.
did anyone face the same issue ? or can you please tell me how exactly to implement this change.
thanks
I was able to solve the problem by actually listening to what the error message said.
there were two problems with my code
store
as props to my <App />
component. which is why the first warning/error message was comming. Passing redux store in props has been removed and does not do anything. To use a custom Redux store for specific components, create a custom React context with React.createContext(), and pass the context object to React-Redux's Provider and specific components like: . You may also pass a {context : MyContext} option to connect
to fix this simply dont pass whole redux store
as props to any component
Provider
from react-redux
was not the root component. the error message said Could not find "store" in the context of "Connect(App)". Either wrap the root component in a Provider , or pass a custom React context provider to and the corresponding React context consumer to Connect(App) in connect options
so i followed the second wanring in the sentence
Either wrap the root component in a Provider , or pass a custom React context
so i wrapped my main root in provider. and things started working well.
ReactDOM.render(
<Provider store={reduxStore}>
<App />
</Provider>, document.getElementById('root'),
);