Setup authentication & authorization in Reactjs

  • Create a folder called actions within the source folder and add a file called login .
  • We’ll add a default case.
  • So create a folder called reducers within source and add a file called login .
  • state , userData : [], error : “Invalid login” , timestamp : action .
  • Create a folder called stores within your source folder, add the store .

In this Tutorial you will learn how to Setup authentication & authorization in Reactjs we will also build an example app with authentication & authorization

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‘use strict’ ; import fetch from ‘isomorphic-fetch’ ;

in the past or Superagent with Promises . The new API supports Promises out of the box, supporting a generic definition of Request and Responseobjects. It also provides a definition for concepts such as Cross-Origin Resource Sharing (CORS) and HTTP Origin header semantics.

as a global function that has a consistent API for use in both server and client code. . Consider the following code:

export const LOGIN_USER = ‘LOGIN_USER’ ;

This defines a single action constant that we can use when we want to dispatch the action. Now check this out:

variable that holds the username and password:

const body = { username : userData . username , password : userData . password };

object along, but the idea is that by making it explicit, we’re sending a username and password and nothing else. This will be easy to understand when you look at the next chunk of code:

const options = { headers : { ‘Accept’ : ‘application/json’ , ‘Content-Type’ : ‘application/json’ , ‘Authorization’ : ‘Bearer 1234567890’ }, method : ‘post’ , body : JSON . stringify ( body ) }

, both specifying that we’re working with JSON data. We’ll also send an authorization header with a bearer token.

method because we can’t send a raw JavaScript object through HTTP. The method converts an object to a proper JSON representation, optionally replacing values if a replacer function is specified. Check this out:

(same as the action), then add this code:

‘use strict’ ; import { LOGIN_USER , LOGIN_FAIL } from ‘../actions/login’ ; import { combineReducers } from ‘redux’

as its arguments:

function user ( state = { message : “” , userData : {} }, action ){

parameters:

configuration. This is not part of EcmaScript 6 but is proposed as an extension to the language. Open up your terminal and run this command:

so that it looks like this:

“presets” : [ “react” , “es2015” , “stage-2” ]

We’ll also add a case in case there is a failure to log the user in:

case LOGIN_FAIL : return { … state , userData : [], error : “Invalid login” , timestamp : action . timestamp };

Finally, we’ll add a default case. It’s not strictly necessary, but it’s generally prudent to handle any unforeseen cases like this:

default : return state } } const rootReducer = combineReducers ({ user }); export default rootReducer

file, and then add this code:

‘use strict’ ; import rootReducer from ‘../reducers/login’ ;

we just created:

import { persistState } from ‘redux-devtools’ ; import { compose , createStore , applyMiddleware } from ‘redux’ ; import thunk from ‘redux-thunk’ ; import DevTools from ‘../devtools’ ;

Setup authentication & authorization in Reactjs

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