Provider

Overview

The <Provider /> makes the Redux store available to any nested components that have been wrapped in the connect() function.

Since any React component in a React Redux app can be connected, most applications will render a <Provider> at the top level, with the entire app’s component tree inside of it.

Normally, you can’t use a connected component unless it is nested inside of a <Provider>.

Props

store (Redux Store) The single Redux store in your application.

children (ReactElement) The root of your component hierarchy.

context You may provide a context instance. If you do so, you will need to provide the same context instance to all of your connected components as well. Failure to provide the correct context results in runtime error:

Invariant Violation

Could not find "store" in the context of "Connect(MyComponent)". Either wrap the root component in a <Provider>, or pass a custom React context provider to <Provider> and the corresponding React context consumer to Connect(Todo) in connect options.

Note: You do not need to provide custom context in order to access the store. React Redux exports the context instance it uses by default so that you can access the store by:

import { ReactReduxContext } from 'react-redux'

// in your connected component
render() {
  return (
    <ReactReduxContext.Consumer>
      {({ store }) => {
        // do something with the store here
      }}
    </ReactReduxContext.Consumer>
  )
}

Example Usage

In the example below, the <App /> component is our root-level component. This means it’s at the very top of our component hierarchy.

Vanilla React Example

import React from 'react'
import ReactDOM from 'react-dom'
import { Provider } from 'react-redux'

import { App } from './App'
import createStore from './createReduxStore'

const store = createStore()

ReactDOM.render(
  <Provider store={store}>
    <App />
  </Provider>,
  document.getElementById('root')
)

Usage with React Router

import React from 'react'
import ReactDOM from 'react-dom'
import { Provider } from 'react-redux'
import { Router, Route } from 'react-router-dom'

import { App } from './App'
import { Foo } from './Foo'
import { Bar } from './Bar'
import createStore from './createReduxStore'

const store = createStore()

ReactDOM.render(
  <Provider store={store}>
    <Router history={history}>
      <Route exact path="/" component={App} />
      <Route path="/foo" component={Foo} />
      <Route path="/bar" component={Bar} />
    </Router>
  </Provider>,
  document.getElementById('root')
)