React Hooks with React Router v4 - how do I redirect to another route?

WD1 picture WD1 · Feb 7, 2019 · Viewed 31.4k times · Source

I have a simple react hooks application - a list of Todos - with react router v4

On the List of Todos, when a Todo is clicked I need to:

  1. Dispatch the current todo in context
  2. Redirect to another route (from /todos to /todos/:id)

In the previous React Class based implementation I could use this.context.history.push to redirect to another route.

How would I handle that using React Hooks in combination of React Router v4 (in code below see my comment in function editRow())?

Code below:

=====index.js=====

import React from 'react';
import ReactDOM from 'react-dom';
import { BrowserRouter} from "react-router-dom"

import App from './App';

ReactDOM.render(
    <BrowserRouter>
        <App />
    </BrowserRouter>, document.getElementById('root'));

=====main.js=====

import React from 'react'
import { Switch, Route } from 'react-router-dom'
import TodosList from './todoslist'
import TodosEdit from './todosedit'

const Main = () => (
  <main>
    <Switch>
      <Route exact path="/todos" component={TodosList}/>
      <Route exact path="/todos/:id" component={TodosEdit} />
    </Switch>
  </main>
)

export default Main

=====app.js=====

import React, {useContext, useReducer} from 'react';
import Main from './main'
import TodosContext from './context'
import todosReducer from './reducer'

const App = () => {
  const initialState = useContext(TodosContext);
  const [state, dispatch] = useReducer(todosReducer, initialState);
  return (
    <div>
      <TodosContext.Provider value={{state, dispatch}}>
        <Main/>
      </TodosContext.Provider>
    </div>
  )
}
export default App;

=====TodosContext.js=====

import React from 'react'

const TodosContext = React.createContext({
    todos: [
        {id:1, text:'Get Grocery', complete:false},
        {id:2, text:'Excercise', complete:false},
        {id:3, text:'Drink Water', complete:true},
    ],
    currentTodo: {}
})

export default TodosContext

=====reducer.js=====

import React from 'react'

export default function reducer(state, action){
    switch(action.type){
        case "GET_TODOS":
            return {
                ...state,
                todos: action.payload
            }
        case "SET_CURRENT_TODO":
                   return {
                       ...state,
                       currentTodo: action.payload
            }
        default: 
            return state
    }
}

=====Todos.js=====

import React, {useState, useContext, useEffect} from 'react';
import TodosContext from './context'

function Todos(){   
    const [todo, setTodo] = useState("")
    const {state, dispatch} = useContext(TodosContext)
    useEffect(()=>{
        if(state.currentTodo.text){
            setTodo(state.currentTodo.text)
        } else {
            setTodo("")
        }
        dispatch({
            type: "GET_TODOS",
            payload: state.todos
        })
    }, [state.currentTodo.id])

    const editRow = event =>{
        let destUrlEdit = `/todos/${event.id}`

        let obj = {}
        obj.id = event.id
        obj.text = event.text

        dispatch({type:"SET_CURRENT_TODO", payload: obj})

        //after dispatch I would like to redirect to another route to do the actual edit
        //destUrlEdit
    }
    return(
        <div>
            <h1>List of ToDos</h1>
            <h4>{title}</h4>
            <ul>
                {state.todos.map(todo => (
                    <li key={todo.id}>{todo.text} &nbsp;
                        <button onClick={()=>{
                            editRow(todo)}}>
                        </button>
                    </li>
                ))}
            </ul>
        </div>
    )
}

export default Todos;

Answer

Lynden Noye picture Lynden Noye · Jan 28, 2020

It's actually a lot simpler than the other answers, React Router v5.1 provides a useHistory hook.

import React from 'react'
import { useHistory } from 'react-router-dom'

const MyComponent = () => {
  const history = useHistory()
  const handleButtonClick = (event) => {
    history.push(event.target.value)
  }
  return (
    <button
      type="button"
      value="/my/path"
      onClick={handleButtonClick}
    >
      Navigate Me!
    </button>
  )
}