Any advice on dealing with authentication issues in React when using Firebase?

I am working on creating a user authentication page in react using firebase. I am able to sign in successfully, but the sign in button does not change to sign out after signing in. Can anyone help me diagnose the issue?

  
    const handleAuthentication = () => {
    if(user){
        auth.signOut();
    }
   }

  <div onClick={handleAuthentication} 
            className="header_option">
                <span 
                className="header_optionLineOne" >Hello, Guest</span>
                <span 
                className="header_optionLineTwo" >{user ? 
                'Sign Out': 'Sign In'}</span>
   </div>
reactjsfirebase-authentication

Answer №1

It appears that the user is possibly logged out, but the interface is not refreshing because it is unaware of the change.

To resolve this issue, consider storing the user in the component's state using either the setState method or a useState hook:

const [user, setUser] = useState(null);

auth.onAuthStateChanged((user) => {
  setUser(user);
});

By including the user in the state, calling setUser(user) will trigger a rerender of the component and display the updated user status.

You can also refer to the initial code snippet in Firebase documentation for guidance on retrieving the current user.

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