Step 6 - Root Component

The App component is the root component of the app. Only the root component should be aware of a redux. The important part to notice is the connect function which is used for connecting our root component App to the store.

This function takes select function as an argument. Select function takes the state from the store and returns the props (visibleTodos) that we can use in our components.

App.jsx

import React, { Component } from 'react'
import { connect } from 'react-redux'
import { addTodo } from './actions/actions'

import AddTodo from './components/AddTodo.js'
import TodoList from './components/TodoList.js'

class App extends Component {
   render() {
      const { dispatch, visibleTodos } = this.props
      
      return (
         <div>
            <AddTodo onAddClick = {text =>dispatch(addTodo(text))} />
            <TodoList todos = {visibleTodos}/>
         </div>
      )
   }
}
function select(state) {
   return {
      visibleTodos: state.todos
   }
}
export default connect(select)(App);