Instead, we can initialize a Context Provider, pass in our state as value, and then we can access it anywhere by calling useContext with our context object. After creating this context we wrap the AuthProvider around the App component, After this, we can use the user id anywhere we want and that is the information we need to allow the user to access or not the Home page. The documentation is also updated concerning this . Choose if you want Google Analytics or not. Now that you have done that, move back to the firebase.js and change the firebase keys using the environment variables. If you like my work, please do support me with reacting, commenting, and sharing this article. Refresh the page, check Medium 's site status, or find something interesting to read. Firebase(v9)Next.js. We wanted that when users logged in, they would be redirected to the Home Page with a custom welcome message that shows his e-mail and the date when they registered. Here is a series of steps you need to follow to add Firebase to your React application. With you every step of your journey. In our App.js we'll need to add our routing option and link these to each of our pages. import { initializeApp } from "firebase/app"; import { GoogleAuthProvider, getAuth, signInWithPopup, signInWithEmailAndPassword, createUserWithEmailAndPassword, sendPasswordResetEmail, signOut, } from "firebase/auth"; import { getFirestore, query . Create another folder inside the src directory and name it hooks and create a new file useFirebaseAuth.js inside it. It will have a total of 3 pages, one for signing up, another for logging, and a home page that is only accessible if the user is authenticated. If they are authenticated we'll render the page, otherwise, we'll redirect them to the login page. So today lets create a React application where we use firebase authentication and router guards. Lets also add a signout button, that when called will sign the user out and redirect them to the login page. Step 5: Adding Firebase to your React Application. To protect our routes we'll create a custom component which Ill call AuthenticatedRoute. for more information about the redux store : redux.js.org/api/store. Firebase Auth6 . Once completed we'll need to also install .css-10qwvqs{display:inline-block;font-family:var(--chakra-fonts-mono);font-size:var(--chakra-fontSizes-lg);-webkit-padding-start:0.2em;padding-inline-start:0.2em;-webkit-padding-end:0.2em;padding-inline-end:0.2em;border-radius:var(--chakra-radii-sm);background:rgba(226, 232, 240, 0.16);color:var(--chakra-colors-gray-200);}react-router-dom and firebase@beta for version 9. Go back to the project settings and you should now see a config like this: Copy the config. That's the page you will see. So, let's suppose the home page is going to have a custom welcome message with the user's e-mail and the date when he registered into the application for the very first time. Once unpublished, all posts by jsbroks will become hidden and only accessible to themselves. First, make sure you enable email/password in the Authentication tab, by clicking on Sign-methods. Unflagging jsbroks will restore default visibility to their posts. Before try it, move to the Firestore console, access the tab Rules and change the code inside of it to the following (specially if you select the production mode during configuration). Our application is receiving these inputs from the user and doing absolutely nothing with it. The component root of the project is going to be the App component. After the installation, run npm start or yarn start to start the development build. Both the setup step and, more importantly, the maintenance over time, are handled with modern platforms like Firebase. dispatch(action)This is the only way to mutate the state of the application. Remark: I have used inline css in order to create a very simple style to the component. I will keep the console open. First, we click in the Authentication card and after redirection, click in Start, then in e-mail and password authentication and then activate it with the respective toggle. Now, the Login Page, Register Page and Home Page are created, but if you move to your browser you will not see those pages. Now, inside the src/pages/Home.js, we have a simple Logout button. In Register component, we put the message to the user sign in if he already has an account. After that, click on the toggle button to enable the Github Auth. So, as we can see, if an already registered user try to register again, the promise resolves negatively and since we create the console.log(errorCode) inside the catch function, it show exactly why. In the modal, under Secure rules for Cloud Firestore, click Start in test mode. Authentication is one of those things that just always seems to take a lot more effort than we want it to, yet it's always a feature every website needs. and call it inside the previous created handleSubmit function. Firebase. They are used to reduce a collection of values down to a single value. // email already in use error handling 'Sorry, This Email is already in use with another account. And that's because we didn't call it for anything, actually. Now let's see how it works in the browser. So, go to your terminal and type, After the installation is completed, move to the App and change the entire code of it by the following. This is going to be a view where only authorized users can access after his credentials are accepted by our application. // create user on firebase with email and password and pass the auth instance to it. I am not an expert in any of these and the code found here probably doesn't follow the best practices, but the purpose of these notes is to document my personal experience and challenges met. Now, we can use this hook inside our Signup.js without creating auth instance. When the user clicks the submit button, we'll grab those two values from the form element and pass them into the signInWithEmailAndPassword function. We start doing de same by creating a new folder named Home inside views with the files index.jsx and Home.jsx. Firebase Authentication Tutorial with Private Routes in React and Vue. After filling up both inputs, if the user is registered in the application he will be authorized to go to the home page. Name the project. This image could be a good app structure if you want to create a Form component and a Message Component. You can use email, passwords, phone numbers, and identity providers like Google and Facebook. Everything is working fine, but what is Firestore doing exactly? One for signing up, another for logging, and a home page that is only accessible if the user is authenticated. Installing Firebase. So, if you try to sign in with a user that is in the authentication list, the access will be allowed and the user will be redirected to the Home page. // create a global instance for all the methods of authentication. Enter a project name, enable/disable Google Analytics and click create project. Okay! The Home Page is the simplest among the three pages. If we go to Firebase authentication documentation we can find two different functions available from Firebase authentication: We will use the first one to register a new user and the second to sign the user in the application. It will have a total of 3 pages. Go to your Firebase Console dashboard, click on Project Settings, scroll down, and you should see something like this: Click on the third icon (</>) to configure our Firebase project for the web. Add the project, Copy the initializeApp import statement & firebaseConfig for further use. Hey! ', // User is signed in, see docs for a list of available properties, // https://firebase.google.com/docs/reference/js/firebase.User. Refresh the page, check Medium 's site status, or find something interesting to read. This component is similar to the logic above expect we will only want to render the component if the user is not authenticated. So we change the Home Page component this way. I hope this article was a good read for you and you learned something new today. In the end, after the user is signed in, we want the application to redirect him to the Home page. Verified by a badge. It makes it impossible to reach the url. The documentation is also updated concerning this new release. Now, let's initialize Firebase and Firebase Authentication so that we can start using them in our app. The signup page is also going to be very similar, we'll create another form that asks for their email and password. I would suggest you add better error handling but this should work well for this tutorial. Congratulations, We have signup ready! For further actions, you may consider blocking this person and/or reporting abuse. Make sure you have the necessary packages installed. After installing firebase, we will create the firebase-config.js file at the root of our project inside the src directory for configuring our firebase for our react app. It is important to notice that this function returns a promise, so if it resolves positively, we are just using the native alert to show the message that the user was created successfully and, otherwise, we send a message that something went wrong. Well, that will work, but that creates a bitter feeling that both e-mail and password are worthless, right? As credentials we can consider the e-mail and password. Redux gives us the ability to centralize our application state and logic. Register view. Issue I am facing the below issue on my android while implementing phone authentication using react-native-firebase in my react-native project. Thanks for keeping DEV Community safe. Adding Firebase to our React app To add Firebase to our React application, we must first register it on the Firebase Console. // remove the listener when the component is unmounted. Inside the pages directory, we have a file called Signup.js where all of the UI is ready with form handling. First, we need to install the react-router-dom library. I hope you enjoy and if you have any questions, just let me know! If we wanted to redirect to a specific URL we could call the useLocation hook from the react router and push a path onto it. Click on the 3rd icon, which is used to connect Web Applications. It makes the firebase tree shakeable as well as provides some other improvements. As I said earlier, we will use the Google Firebase to do that. And that's what we are going to do in the next section. Firebase has updated its JavaScript SDK recently. Here is what you can do to flag vcnsiqueira: vcnsiqueira consistently posts content that violates DEV Community 's Most upvoted and relevant comments will be first, My name is Vincius and I am interested in improving my software development skills. A store is an object with a few methods that we will need for our use case. Making these changes to the Login and Register pages, this is the new code of them. DEV Community 2016 - 2022. In our case will want to pass in the user's state which we get from the onAuthStateChanged listener. We'll also need a way to get the current user logged in through a promise. Both the setup step and, more importantly, the maintenance over time, are handled with modern platforms like Firebase. Once the Vue project is set up we will also need to install firebase beta to get access to Firestore version 9 API. Unfortunately most of the guides online for setting up Firebase are for version 8, which works quite differently - in this article I'll show you how to set up version 9. On clicking the Signup button, the form will trigger the submit event, and the signupUser function will be called. The Firebase authentication helps us with this task. We have two major properties in the error object. They can still re-publish the post if they are not suspended. It will become hidden in your post, but will still be visible via the comment's permalink. They can still re-publish the post if they are not suspended. Create React App will automatically pick it. The store will be called with the current getState() result and an action passed with dispatch. Ah-ha! // create new state for checking if the user is authenticated or not. We can only access the Home Page by typing the corresponding route into the url. Share You should also check out my website codingwithjustin.com where I post more in-depth content. In order to do that, we create a new folder into the src that I will call views and inside of it create the folder Login with the files index.jsx and Login.jsx according to the following image. I was interested to learn more on how to persist user information through a react application with Firebase authentication (email, password) and Redux. Templates let you quickly answer FAQs or store snippets for re-use. In the routes/index.js we'll add our route options for each of the pages I mentioned earlier. Now you already imagine what we are going to do, huh? // run only once when the component is mounted. Hello everyone, In this article, we are going to learn about Authentication in React using the new Firebase JS SDK. All right! Let's call the messaging app: chat-app. We'll also create an auth context for holding the state of the current user signed in. I added a success url in /login to be the /a and it is ending up in an infinite redirect now. <>. npm install firebase --save npm install firebase-admin --save. It's not too difficult to set up a project with Firebase and use its features (Firestore and Firebase authentication) to handle user authentication and authorization with React! Firebase v9 Setup The process of creating a new Firebase project and database is the same as always. So, move to https://firebase.google.com/ in your browser. Firebase . We just import the functions getAuth, createUserWithEmailAndPassword and signInWithEmailAndPassword from firebase/auth and we create the functions registerUser and loginUser to be imported in the respective components. We need two methods from the new Firebase SDK. I'll also be using version 9 of firebase which is currently in beta. // on successful creation, navigate to home page. We have signInInWithEmailAndPassword for login, let's use it inside of our Login component. In the new release, they have introduced a new modular API, which enables tree-shaking, bundle size reduction, and other benefits. Again, since we are considering e-mail and password as credentials, this view is going to have a form with the desired e-mail and password the user wants to register himself. I'm assuming that you know how to work with context, but if you don't, I suggest this link where I explain how to use it. Well let's create the strategy to authorized and unauthorized pages to our application: the routes '/' and '/register' will be available always and the route '/home' will be available only for authenticated users. Thanks for keeping DEV Community safe. We will write all the authentication logic inside this hook and expose a simple API for our components to use. I have a community over on discord if you'd like to learn more. Inside the .env.local, we have to prefix every environment variable with REACT_APP_. This takes care of our react integration now let's move on to my personal favorite, Vue. The index.jsx will be similar to previous ones. Create your Firebase project. I don't want it therefore I haven't checked it. It's my go-to solution when I need server side functionality and it pairs really well with React Native. Otherwise a memory leak :p, // if the user is authenticated, then return the children (Home Component), // otherwise, Redirect component with redirection to /, github.com/rehan-sattar/firebase-auth-sdk-9. I strongly recommend you not to use css inline as I am doing here but instead use css modules or styled components, for example. This function uses the createUserWithEmailAndPassword that was originally exported from firebase.js. Now, if we try to access the home page by the url route, the application will not allow us to do that and the Home Page is only accessed by authenticated users. After it, click create project button. I have also enabled the hosting for it. Templates let you quickly answer FAQs or store snippets for re-use. It's also worth mentioning, you might want to add a loading sign-on in your app while the auth check is being run. In our case the returning value is the new state object. If they are logged in they'll see a list of conversations on the left and a chatting interface on the right. . Now, click on the Get started button, then click on the Sign-In Method tab, and then select the GitHub Sign-in provider. First, make sure you enable email/password in the Authentication tab, by clicking on Sign-methods. In this tutorial we are going to understand how to use Firebase V9 to both setting up the authentication for your application and use the Firestore database to manage additional information about the users. Next, I'll create a firebase.js file to set up and initialize our firebase application. Next.js Firebase FirebaseTOPFirebaseFirebase I'll use the code method for detecting the errors and will display my custom messages. createUserWithEmailAndPassword. So, let's change the firebase.js file including these functions. Head over to Firebase and create a new application. To do this we can simply create a promise the resolves or rejects once the onAuthStateChanged function has been called. Create a new account and login. I recommend you add better error handling here but I'm going to wrap this in a try-catch statement and alert the user with any error messages. Firebase/Firestore. Once unpublished, this post will become invisible to the public and only accessible to Justin Brooks. So, this view will have a form with both e-mail and password inputs. It is a state container holding the applications state. import firebase from "firebase/app"; import "firebase/firestore"; import "firebase/auth" const firebaseConfig = {}; const app = firebase.initializeApp (firebaseConfig); const db = firebase.firestore (); const auth = firebase.auth (); export { db, auth } Also makes sure you are referring to Web (name-spaced) tab in the documentation. Adding authentication and access control to your application doesn't have to be a hassle. For the Home page, We'll put a nice welcome message and show the user's email. Inside this file, we have a simple UI for the login screen. I'll try you with my comments. First you have to install npm files in your node modules by. code of conduct because it is harassing, offensive or spammy. Made with love and Ruby on Rails. For the login page, we'll create a form that asks the user for an email address and password. I am going to say yes; Choose the Firebase account to the Google Analytics. . Oh, I play Chess too! Well, basically this context is constantly listening if there's any changes with the authentication and storing it in the variable currentUser. The store use its reducing function with the current state and the given action to return a new state. I faced a few challenges but got the pieces together at the end. Go to the Firebase Console and click Add project. And how Firebase facilitates us in managing the authentication state over the application. It will be redirected to the /login and post that it will be redirected to / path. We can get the user using the useAuthState hook we created eailer. We have the three basic functionalities of authentication ready. Today we'll create both a React and Vue application where we use firebase authentication with router guards to allow users to sign in with a custom email address. You can read the documentation of the firebase from here. For getting the authentication state, firebase provides us a listener called onAuthStateChanged. In order to do this, we move to Login.jsx file, import the loginUser. We are doing it because we do not want to expose our firebase configurations to other people over the internet. For the home page we'll dispaly a welcome message with the users email. In this case, we are passing the route '/' to the Login page, '/register' to the Register page and '/home' to the Home page. We want that the Home Page to be accessed only if the user is authenticated. The process should be straightforward and only take a few seconds. But what happened? If we get a user back, we send its information on the state with our store method dispatch and the action login. You can choose whatever you want. Firebase Authentication provides backend services, easy-to-use SDKs, and ready-made UI libraries to authenticate users to your app. (Wikipedia). Now, changing the url in the browser adding '/register' in the end will take us to the Register page, and, changing it to '/home' will take us to the Home page, Now, almost everything is fine but the links to change from the Login page to the Register page are still not working. To finish, we have to call this handleRegister into the submit button by calling it on the onClick props. The returned value is considered to be next state. In this article, we are going to implement authentication by building a RESTful API and a web app that allows a user to sign up with a secure note that will be accessible only to the user. Let's say we do not want our Home screen to be accessed by any unauthenticated user. React(also known as React.js or ReactJS) is a free and open-source front-end JavaScript library for building user interfaces based on UI components. So, move to the folder you want and type the following in your terminal, Once the creation is finished, go to the project folder an type. Photo by .css-1wbll7q{-webkit-text-decoration:underline;text-decoration:underline;}Markus Spiske on Unsplash, .css-y5tg4h{width:1.25rem;height:1.25rem;margin-right:0.5rem;opacity:0.75;fill:currentColor;}.css-r1dmb{width:1.25rem;height:1.25rem;margin-right:0.5rem;opacity:0.75;fill:currentColor;}7 min read. 1FirebaseFirebase I'm not a promoter just don't like firebase, then heard about supabse. First, let's move to the firebase.js file and import the signout from firebase/auth, and create in the end the logoutUser function, Now we just import the logoutUser function in the Home Page and call it in the created Logout button. For those who does not, Firebase is a Backend-as-a-service platform that provides several tools to developers, like authentication, database, storage, hosting, test lab, notification, among others. Now, let's talk a little about what we are going to create. Register your app. What have we done? ', 'The email you have provided is not registered yet. By the firebase doc it sais that i should use import { getAuth, onAuthStateChanged } from "firebase/auth"; I searched and found that "firebase/firebase-auth"; folder has included getAuth method but when i try to use import {getAuth} from "firebase/firebase-auth"; it gives me an error states firebase/firebase-auth file is not exported. In order to to that, we import BrowserRouter as Router, Routes and Route from the library. Next I'll create a firebase helper file called firebase.js. We are going to make use of the React Context API to create a global state related to that. I strongly recommend you to create a specific alert component to show the message to the user, but we are not doing it here. Once it's successful the user will be considered logged in and will automatically be redirected to the home page. Become a member and gain access to premium content. Start by creating the store in your application. It is maintained by Meta (formerly Facebook) and a community of individual developers and companies. So today we'll create both a React and Vue application where we use firebase authentication and router guards and allow users to sign in with a custom email address. In that page, we click to add a new project. We will again create another method inside the useFirebaseAuth hook for logout. You'll need those coming up. So, every time a user is authenticated, the currentUser will be equal to the user id of the Firebase authentication and if no user is authenticated this variable is null. React Firebase . Firebase provides 2 options to install it to our application - NPM and <script> tag. So, it will be responsible to throw the user to the Login page, Register page or Home page. Redux can have only a single store in an application. I compiled the example discussed in this article in a react project that you can check on GitHub.Update the file firebase_example.js with your firebase configuration infos and rename the file in firebase.js. The only difference, for now, between Register.jsx and Login.jsx is the title and the message in the end. DEV Community A constructive and inclusive social network for software developers. Yes, you are right! We use getAuth for authentication. Context in react is a tool that allows you to share state throughout the whole react component without having to pass it down by props. Please try again! How to upload images on firebase storage and firestore using react native expo| #reactnative #firebasestorage#firebase image uploading in react nativeInstall. Then we have three simple steps: After that, your project will be created in Firebase. So we move back to the Register page and import the database db from firebase.js and we import the functions doc, setDoc and Timestamp from firebase/firestore and make a small change in the handleRegister so it can write inside the users collection of Firebase Firestore. When the user clicks the submit button, we'll grab those two values from the form element and pass them into the signInWithEmailAndPassword function. If you are still here, let's recall some initial ideas. from firebase.js and create the handleRegister function. We can understand the Router as a container that wraps the whole application and allows us to use routes, then we import all the views we created before and for each of it we create an specific Route inside Routes passing as props the path of the route and the element that should be rendered. Fullstack developer creating youtube and opensource projects. code of conduct because it is harassing, offensive or spammy. To do this, follow these steps: Go to your Firebase Project dashboard and click on the Authentication tab on the sidebar. I'll also be using version 9 of firebase which is currently in beta. FirebaseFirestore Cloud Firestore It offers multiple tools as services for developers such as authentication, realtime database, hosting, messaging services and more. Someone clever could say that it would be enough to use the useNavigate hook in the login page again associated with the submit button. Firebase makes this process super easy. Let's also create a simple UnauthenticatedRoute that will use for the login page. We don't need to set up Firebase hosting, so we'll skip it. Reading the Firestore documentation we just import db from configs/firebase.js and doc and getDoc from firebase/firestore and use the useEffect hook to get this information from firestore every time any change happens in the component. Well, actually it's not difficult. In both cases for creating the app, we'll need to set up a firebase project. The Firebase platform provides powerful libraries that let us easily integrate authentication into our projects. I'm choosing the default one. In the Firebase console, click the Chat Room project to go to its project overview page. Now it's time to set the authorization of our pages. Since the App component will be responsible to manage which page to be rendered, we now need the React Router library to create the specific routes. Instead, we can initialize a Context Provider, pass in our state as value, and then we can access it anywhere by calling useContext with our context object. Initially we just create a welcome message to the user. DTT - Ditch the trend. One for signing up, another for logging, and a home page that is only accessible if the user is authenticated. We'll be using the Vue 3 composition API extensively in this tutorial and we'll also want to make sure we enable the Vue router so we can create different pages. I recommend you add better error handling here but I'm going to wrap this in a try-catch statement and alert the user with any error messages. We also need to make sure we unsubscribe from this even when the component is unmounted. We will create a new generic component called PrivateRoute which will be inside the newly created components folder inside the src folder, The PrivateRoute component will be used to wrap the Home Page route component so if the currentUser exists it will render the Home Page and, otherwise it will throw the user to the Login Page. Enter the app name and click on Continue. When users visit the chat-app homepage: if they are not logged in, they'll be presented with a sign up form. In this case, we will need to use the useNavigate hook provided by the react-router-dom library. We'll also create a button that will call the auth signout function. We'll need to create a new project using the create react app CLI. Firebase provides us much better errors if anything went wrong. For the login page, we'll create a form that asks the user for an email address and password. firebase.google.com Introducing Firebase Authentication Watch on We have to protect it and only allow the authenticated users to see it. However, doing this won't protect our routes from unauthenticated users. In our case will want to pass in the user's state which we get from the onAuthStateChanged listener. When the user will click the Login button, the form will trigger a submit event and loginUser will be called. This way you don't flash a page every time you refresh. I'm really interested in topics in react, architecture and software engineering in general, //### REGISTER USER WITH FIREBASE AUTHENTICATION ###//, How to embed fonts with React and styled-components. So today we'll create both a React and Vue application where we use firebase authentication and router guards and allow users to sign in with a custom email address. We put all our import in this file so it makes it easier to use the different parts in the rest of our application. That's because the application is still rendering what is inside the App component and we do not change anything there. A store is the complete state tree of the application. In order to do that we will use the create react app boilerplate. Attention: If you intend to use git as a version control to your code and make it public so everyone can access it in your github, for example, it is not a good idea to simply paste your firebase code inside this file, because everyone could access your firebase API's. It is maintained by Meta (formerly Facebook) and a community of individual developers and companies. In this video, learn how to integrate Firebase Auth into an existing Node.js back . Create your userSlice.js file features/userSlice.js. This component is going to manage the routes of the application. If they are authenticated we'll render the page, otherwise, we'll redirect them to the login page. We will use this listener in our useFirebaseAuth hook. We'll need to create a new project using the create react app CLI. If we wanted to redirect to a specific URL we could call the useLocation hook from the react router and push a path onto it. Remark: I also included the pointer cursor in the styles of the span tag so the mouse cursor is going to show a hand when it passes on the text, which shows the user that the text is clickable. You can also create new password-authenticated users from the Authentication section of the Firebase console, on the Users page, or by using the Admin SDK. To protect our routes we'll create a custom component which Ill call AuthenticatedRoute. Well, how could we make it work? We'll also want to make sure we unsubscribe from this event when the component is unmounted. We'll call the useAuthState hook we created earlier to check if the user is authenticated. After successfully starting the project, you will be able to see this screen: You can create a free account or login into your existing account. We'll also need to enable the auth options before we start building anything. Then, select the Firestore card, click in Create Database, choose if the database will be run in production mode or test mode and select the local of your cloud Firestore and click Activate. Let's get started with the most popular option, React. Inside the pages directory, we have the Login.js. Now, remember that we need to do two different things: register a new user and sign in a user. First things first, if you are reading this, you probably know what Firebase is. This component is similar to the logic above expect we will only want to render the component if the user is not authenticated. We start with the Login Page. Inside index.jsx file we just export the default component from the Login.jsx file. In the project console, we are going to choose both Authentication and Firestore. We can write the login logic inside this function. You can add a logout function in your header for example like this. In the new release, they have introduced a new modular API, which enables tree-shaking, bundle size reduction, and other benefits. You can find the full write up at codingwithjustin.com and source code on github. We'll also create a button that will call the auth signout function. And this is not what we want. Give your app, a nick name. Once unpublished, all posts by vcnsiqueira will become hidden and only accessible to themselves. DEV Community 2016 - 2022. and inside Login.jsx we create the Login form. In this case the access was not allowed and, in the console we see the message "user not found" which is exactly what is happening now. That's it! Now let's see the authentication console in Firebase. And we use signInWithEmailAndPassword and createUserWithEmailAndPassword for Signing in and Registering using the email and password, respectively. We will register this hook once when the application is loaded and track the state. and after all that we can now click on the span elements to be redirected to the specific pages. Built on Forem the open source software that powers DEV and other inclusive communities. The react-router-dom library gives us, out of the blue, the hability to manage routes and, that way, the application know which component must render. Click on Add project" and follow three simple steps. Hello everyone, In this article, we are going to learn about Authentication in React using the new Firebase JS SDK. In the end we put a simple text so, if the user is not registered, he will be able to go to the Register Page. Write the name of your project according to your preference, and click continue. How to Create Firebase Authentication in React Native Step 1: Download Expo React Native App Step 2: Create Firebase Auth Project Step 3: Set Up Navigation Step 4: Create User Registration Screen Step 5: Create Login Auth Screen Step 6: Run App in Device Download Expo React Native App As you can see, in the code above, inside each field of the object firebaseConfig you put all your firebase codes. In the navigation menu, click Firestore Database. You should also check out my website codingwithjustin.com where I post more content similar to this one. We now are going to use the loginUser function created in firebase.js to sign in an existing user. Emmanuel Unyime. Firebase Realtime database with React Native CRUD.Published app. Initialize your application and import the authentication components from firebase/auth Restart the local react server for CRA to pick all these variables. It will have a total of 3 pages. Once suspended, jsbroks will not be able to comment or publish posts until their suspension is removed. In our App.js we'll need to add our routing option and link these to each of our pages. I will repeat some of these in the future. Now we can implement the PrivateRoute component with the help of our useFirebaseAuth hook. On the next screen, firebase will ask if you want analytics or not. We just need to use the onAuthStateChanged function. Moving back to the Firebase documentation we can find here how we can add data to Firestore. Let's create a new file inside the src/components/ErrorDialog.js. We now are going to paste the Firebase configuration inside of this file and make some changes. Well, when the user clicked the Submit button, the application called the handleRegister that called the createUserWithEmailAndPassword and checked if everything was fine and created the user. First, let's create another method in our useFirebaseAuth hook for signing. I am naming it as Authentication. There is a problem with this method. I encourage you to submit an empty e-mail and password. First, we click in the Authentication card and after redirection, click in Start, then in e-mail and password authentication and then activate it with the respective toggle. Its use is quite similar with the previous hook useHistory, which is not available anymore in React Router v6. // check at page load if a user is authenticated, // user is logged in, send the user's details to redux, store the current user in the state, // use state constants for the the form inputs, // Sign in an existing user with Firebase, // returns an auth object after a successful authentication, // userAuth.user contains all our user details, // store the user's information in the redux state, // A quick check on the name field to make it mandatory, // Update the newly created user with a display name and a picture, // Dispatch the user information for persistence in the redux state, // dispatch to the store with the logout action, Connect your terminal to your Firebase account. Perfect! I have already created the UI for this project for you to use. Otherwise, he cannot go further. Adding authentication and access control to your application doesn't have to be a hassle. So, if you want to keep your keys protected, it's a good idea to create a .env file in the root of your project, paste these important keys there, include the .env file in your gitignore file and call the keys as React environment variables inside firebase.js file. Now, let's go through each page and those up. Let's move forward with the authentication now! I have a community over on discord if you'd like to learn more. Adding Firebase Auth to a Node.js project requires a slightly different process than adding it to a React project. It supports authentication using passwords, phone numbers, popular federated identity providers like Google, Facebook and Twitter, and more. Any amount is appreciated! Still in your App.js file initialize two constants for your user and for your dispatch (the information you will send to the redux state). Get the currently signed-in user The. Let's also create a simple UnauthenticatedRoute that will use for the login page. We are going to build a simple application in which we will perform three basic operations. Now that we have created the project, it's time to create an application inside the project. Setting up Firebase First, you need to create a Firebase account at https://firebase.google.com/ and go to the Firebase console at https://console.firebase.google.com. We'll also create an auth context for holding the state of the current user signed in. Thanks! and use it in the span element with the onClick prop. which, after running, is going to show you the famous React first page in your browser. Click the icon for creating a new web application inside your project. If this fails we'll display an alert message to the user. .css-y5tg4h{width:1.25rem;height:1.25rem;margin-right:0.5rem;opacity:0.75;fill:currentColor;}.css-r1dmb{width:1.25rem;height:1.25rem;margin-right:0.5rem;opacity:0.75;fill:currentColor;}11 min read, Subscribe to my newsletter and never miss my upcoming articles. Usually slices are a single file.We split up the root Redux state into multiple smaller slices of state for each feature of the application.In our case we will have a userSlice file where we will have the reducer's actions and logic for the user login and logout. Right, but how do we know if a user is authenticated or not? Next, open the Firebase console and click Add Project.Give your project a name, preferably okta-firebase.For now, you can turn off the analytics and create the project. After you finished with three steps you will be redirected to the screen which looks like on the picture below. It supports authentication using passwords, phone numbers,. This is because firebase-auth script is not added. Thank you all! Now, let's try the application. Let me know in the comments if this information has been helpful share your insights if you see some useful improvement I could bring to my solution. We can call an onsubmit handler and add the .prevent option. Guys, there is new competitor in the town Supabase. Here we'll initialize our configuration using the values we got from creating a project. To implement this feature, first, we have to get the authentication state of the user either it's logged in or logged out. FirebaseSDK9Firebase Authentication(v9)ReactFirebase Once unsuspended, jsbroks will be able to comment and publish posts again. After that, your project will be created in Firebase. Great combo! This is not a very fancy application, so we do not have much different components to deal with and, that's why I'm not going to create a big component tree to our application. DEV Community A constructive and inclusive social network for software developers. However, doing this won't protect our routes from unauthenticated users. It will become hidden in your post, but will still be visible via the comment's permalink. And as a bonus, we will also cover error handling and private routing for protecting the routes. Otherwise, the user is redirected to the Login Page. Let's see what happened if we try to register with the same user again. This will be useful when we start creating components. Copy-paste the configuration somewhere for later use. For the Home page, We'll put a nice welcome message and show the user's email. This way you don't flash a page every time you refresh. I would still encourage you to read the next bonus sections for a better experience. We will create a new state errorMessage in which we will set our own custom error message. Now, there is one thing missing. So, as you can see, now every time a new user register in the application, the e-mail and date of register is stored in Firestore in the collection users inside a document with the user id, under the fields email and registeredAt respectively. We'll grab the username and password from the form which we'll pass into the signInWithEmailAndPassword function and then redirect the user to the home page using the router. Now, let's go through each page and those up. Most upvoted and relevant comments will be first. But, think about it. Authentication is one of those things that just always seems to take a lot more effort than we want it to, yet it's always a feature every website needs. In order to do that, we first need to include a button in the Home Page so the user can logout. In the end, the handleSubmit function of the Login page needs to check if the user is already registered, and, if so, allows the access to the Home page. We'll also want to make sure we unsubscribe from this event when the component is unmounted. The Home.jsx will be super easy. First, we move to the Register page import the registerUser function. Now, let's go to the Register page and type an email and password and see what happens. Well, since we are going to admit only registered users to go to the home page, we need to create a view where someone can create his own credentials to access the application. Support Rehan Sattar by becoming a sponsor. If someone wants to ditch the google policies and maintain our app on open source code, then definitely supabase is your go to. Then add the application name and click Register app. Are you sure you want to hide this comment? It's also worth mentioning, you might want to add a loading sign-on in your app while the auth check is being run. I'm a Software Engineer && Technical Writer passionate about data structures and beating former "best-yet (s)". So far, nothing. Remark: Do not forget to include your .env file into your gitignore file. So let's also create some functions we use in our Vue application. Once it's successful the user will be considered logged in and will automatically be redirected to the home page. It seems it is working. Now, click the console button in the top right corner of the page (you are going to need a Google account) and Firebase will redirect you to a page where all your projects will be available to be chosen. Now that we have the configuration credentials, we will create a .env.local file in our react project. Just clone the repository from here and switch to the ui-only branch. The process should be straightforward and only take a few seconds. But there is one improvement that we can do in order to improve the quality of code and reusability. In your project src, create a new file firebase.js and copy your Firebase config information. Well, since authentication is the main purpose of this small project, it is a good idea to think about 3 different views: I think this is a good starting point. And now, every time a user access the application, the Home Page will display his e-mail and date of registration. This listener is automatically called whenever the user is logged in or logged out. User Authentication with React, Node.js, and Firebase | JavaScript in Plain English 500 Apologies, but something went wrong on our end. The CLI outputs the Issuer and Client ID. Click to copy all this code. This will listen to auth state changes and assign the value to a user reactive variable. onAuthStateChanged is an observer on the firebase auth object. We move to the Register page and create a new registration. After that, click Save. Here is how to install the Firebase package as a module . Click Enable. In this use case, I only use the authentication service from Firebase. The signup is going to be very similar. (Wikipedia) Let's start Finally, we have the home page. Let's update the signupUser method to catch errors. After that, click Save. You can write the name of your app and register it. Of course, that is not what we want. In this case, the firebase authentication shows us that the e-mail is already in use so it does not register the user again. Import Firebase Auth React With Code Examples The solution to Import Firebase Auth React will be demonstrated using examples in this article. On submit we'll grab those values and call the createUserWithEmailAndPassword function. Now, if you move to the browser, you will se the Login page, because the localhost url is the route '/', so the application is rendering the Login page. Here we'll initialize our configuration using the values we got from creating a project. In the Firebase console, go to Authentication, then Sign in Method, and enable the Email/Password method. Import as well the necessary elements for your user authentication. After we finally prepare our application, now we need to deal with the user authentication. To start we'll create a firebase helper file called firebase.js. Actually, with this actual approach, the user does not need to fill out his e-mail and password to access the Home page. I always like to plan every project and I suggest every reader to do the same. When a store is created in Redux, a reducer has to be specified. Nothing special so far. Here is what you can do to flag jsbroks: jsbroks consistently posts content that violates DEV Community 's React (also known as React.js or ReactJS) is a free and open-source front-end JavaScript library for building user interfaces based on UI components. All rights reserved. I am not going to do it, because I want to keep things simple. First, let's create a new component ErrorDialog for presenting the errors. React, React-hook Typescript . As I said earlier, the Login Page will just contain a form with two inputs, one to the e-mail and another to the password. React OAuth Authentication with Firebase | by Esau Silva | Bits and Pieces Sign In Get started 500 Apologies, but something went wrong on our end. The state will be a user when logged in and null when logged out. It is maintained by Google and it is a very useful platform where you can develop scalable projects. Once unsuspended, vcnsiqueira will be able to comment and publish posts again. , Firebase . import { getAuth, signOut } from 'firebase/auth' import { useAuthState } from './firebase' export const Home = () => { const { user } = useAuthState() return ( <> <h1>Welcome {user?.email}</h1> <button onClick={ () => signOut(getAuth())}>Sign out</button> </> ) } Conclusion Firebase is awesome. Once unpublished, this post will become invisible to the public and only accessible to Vincius Siqueira. ', 'You have entered wrong password. One could easily maintain auth and database on supabase while host and serve functions on netlify. // on successful creation, navigate to home page. Before coming back to the code, let's go to the terminal and install firebase as a dependency to our project, Once it is finished, let's come back to our code. In this tutorial, you will learn how you can use Firebase Authentication in React to authenticate users using an email and password. It will have a total of 3 pages. getState()It returns the current state tree of the application. If the user is not registered, we expect the access will be forbidden. // after success, push the user to the main screen. The first one we will create is for handling authentication. Unflagging vcnsiqueira will restore default visibility to their posts. Basically we create a form with a title where we wrote 'Login' and two inputs to deal with the e-mail and password followed by a submit button which, in the future will carry the function to send the user information to be validated. Context in react is a tool that allows you to share state throughout the whole react component without having to pass it down by props. Let's get started by creating a Vue project using the CLI tool. We just talked about authentication. After that, we move to the home page of the project to register it. Nice post! If jsbroks is not suspended, they can still re-publish their posts from their dashboard. It takes the auth object in parameters and returns an authenticated user object. In the project console, we are going to choose both Authentication and Firestore. After clicking, a setup wizard will come and you will be asked to enter your application details. Well, let's change this. We're a place where coders share, stay up-to-date and grow their careers. For further actions, you may consider blocking this person and/or reporting abuse. Now we will load this file inside src/index.js. With you every step of your journey. &quot;NativeFirebaseError: [auth/unknown] An internal. If the REACT_APP_ prefix is not there, CRA will not pick it. We can call it useFirebaseAuth. After including the authentication, we can improve it. It will take few seconds to create the project. For our React app, we are going to use NPM. Firebase Authentication provides backend services & easy-to-use SDKs to authenticate users to your app. It makes the firebase tree shakeable as well as provides some other improvements. As we said before, the Home page should only be accessed by an authenticated user. If the user signs in is successfully they will automatically get redirect to the home page. One for signing up, another for logging, and a home page that is only accessible if the user is authenticated. // create a new state for storing user data. Login view. That's exactly what we wanted. Pretty good! We will write all the logic inside this function for signup. This is going to be the view where the user can type your credentials to possibly access the home page of the application. Built on Forem the open source software that powers DEV and other inclusive communities. Are you sure you want to hide this comment? Remark: In real word applications we can use this errorCode to show good messages to the user. Introduction. and then, we import the PrivateRoute in the App component and wrap the Home Page route. After that, we create a new folder inside the views called Register with the files index.jsx and Register.jsx. Once completed we'll also install react-router-dom and firebase@beta for version 9. I encourage you to do that because I think it makes you more focused on what you really have to do. After login, go to console and click New Project. Well, in the src folder, we create a folder called context and inside of it we create the folder AuthContext with the file index.jsx. We have used the React hooks to create the states email and password and inside the input we use the onChange event handler with both handleEmail and handlePassword function to the e-mail and password inputs respectively. so the flow is I visited /a endpoint. The signup page is also going to be very similar, we'll create another form that asks for their email and password. Firebase provides authentication services that allow you to easily register and sign-in users. Continue with the next setup and complete the wizard. It will, again, return an error saying that the e-mail is invalid. In the src directory of our React app, create a firebase.js file and add the following imports: // src/firebase.js import { initializeApp } from 'firebase/app' import {getAuth} from 'firebase/auth' We'll need to set up a firebase project to get started. We're a place where coders share, stay up-to-date and grow their careers. Plus, thanks to the author of this post for writing this infomercial. These files will be almost exactly the same from those from Login Page as we can see below. We can assume that this is the first page of our app, when people arrive after type the url in the browser. We assume here that you already did the following: Firebase is a Baas (Backend-as-a-Service) built on Google's infrastructure. This will be useful when we set up our router guards. You can enable the analytics for your project from here. This file will actually contain all we need for interacting with firebase. We still did not block the Home Page to unauthenticated users, but we are on our way to do it. We'll also need to enable the auth options before we start building anything. 2021 Justin Brooks. You can skip this if you don't want to learn how to store data information with Firestore database. Something like this. Click Create database. Let's copy and paste our login page over, change the title and call createUserWithEmailAndPassword. If the user signs in is successfully they will automatically get redirect to the home page. Inside the src folder, we create a folder called configs and inside of it, create a file called firebase.js. Also, I am not going to create a big style for the application, since this is not the focus of this project. A reducing function or reducer, is a function that accepts an accumulation and a value and returns a new accumulation. NOTE: You can also use the Okta Admin Console to create your app.See Create a React App for more information.. Click Next and select a Cloud Firestore location near to you. By the Redux documentation, a "slice" is a collection of Redux reducer logic and actions for a single feature in your app. Firebase has updated its JavaScript SDK recently. But, for now, we just have the id of the user who access the Home Page through the AuthContext. If we could store both the e-mail and the register date when the user register himself in the app with his own id and if we could recover this information inside the Home Page our problems would be solved. we can use both properties to handle the errors. Once suspended, vcnsiqueira will not be able to comment or publish posts until their suspension is removed. On submit we'll grab those values and call the createUserWithEmailAndPassword function. Let's write our last auth functionality i.e logout. Welcome to this course on React Native, We will build shopping list app with React Native. It allows us to share the state between the different components of our application and setup a process on how components can interact with the store to read or update the state tree of the application. We'll also create a button that will call the auth signout function. Congratulations, we have both signup and login functionalities in place now. We can always code some components out of the blue, but if you are not focused on what you are doing, it is easy to waste a lot of time. Yeah! Enable the Sign-In method that you want to use in Authentication. Made with love and Ruby on Rails. This is my personal notes on trying to connect the dots between Firebase 9, a react application and Redux Toolkit. Let's change this. Now, we need to destructure the getAuth that we imported. We can add a computed property here to check if a user is logged in or not since firebase will return null if a user is not authenticated. We just need to import the useNavigate hook from the react-router-dom. The elements in the .env file should not need the ' ' and you don't need to put comma or semicolon in the end of each line. Import the necessary elements from react-redux in your App.js file. Head over to Firebase and create a new application. Now, we just need to get the data from Firestore inside the Home Page. We also import the AuthContext hook to get the user id to access the corresponding document in firestore. 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