Adding extra fields to your authentication form

Update the AuthForm component

1. Find the signup function within the submitHandlersByType object. We need to update this function to pass along more than just email and pass to auth.signup(). You can see our updated version of this function below. Notice how we don’t need to specify the new field names, as we use javascript destructuring to create an object named otherFields that contains all other fields.
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signup: ({ email, pass, confirmPass, ...otherFields }) => {
  return auth.signup(email, pass, otherFields).then((user) => {
    // The rest of this code is the same ...
  });
},

2. Scroll down to onSubmit and update the function so that it passes all form data (the full data object) instead of just email and pass. It should become ...
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const onSubmit = (data) => {
  setPending(true);

  submitHandlersByType[props.type](data).catch((error) => {
    // The rest of this code is the same ...
  });
};

3. Add a new input to your auth form (src/components/AuthForm.js). In this example we'll be adding a "Name" input to our form built with Material UI. If you're using a different UI kit then make sure to follow the patterns you see in your existing code rather than pasting in this example directly.

<form onSubmit={handleSubmit(onSubmit)}>
  {["signup", "signin", "forgotpass"].includes(props.type) && (
    {/* Your email input is here ... */} 
  )}

  {/* This is the part you'll be adding */} 
  {["signup"].includes(props.type) && (
    <Grid item={true} xs={12}>
      <TextField
        variant="outlined"
        type="text"
        label="Name"
        name="name"
        placeholder="Name"
        error={errors.name ? true : false}
        helperText={errors.name && errors.name.message}
        fullWidth={true}
        inputRef={register({
          required: "Please enter your name",
        })}
      />
    </Grid>
  )}

  {/* The rest of your inputs are here */}
</form>

Update auth.js

1. Update the signup function so that it accepts a 3rd argument called otherFields and then calls updateProfile at the end of the promise chain. In this example we're using Firebase. If you're using a different auth provider make sure to just add in the relevant changes.
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const signup = (email, password, otherFields) => {
	return createUserWithEmailAndPassword(auth, email, password)
    .then(handleAuth)
    .then(() => {
	    return updateProfile(otherFields)
    });
};

2. Scroll down to the updateProfile. We need to make a small change that ensures it's safe to call this function immediately after the new user has been created.
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// If using Firebase change the updateUser call to ...
await updateUser(auth.currentUser.uid, data);

// If using Auth0 move fetching of currentUser to above updateUser 
// and modify updateUser to read from currentUser instead.
const currentUser = await auth0.extended.getCurrentUser();
await updateUser(currentUser.sub, data);

3. That's it! You should now be able to signup and see the extra form field persisted to your database.

A note about social auth

1. Also add this field to your user settings component so they can update their data on their settings page. This may work for you if it's not absolutely necessary that a user give you this extra info, but you still want to give them a way.
2. Add a 2nd step in your signup flow where user enters this information. Whether a user signs up via email/pass or a social option they will go to this 2nd step. This is easily done by adding a new route, taking the user to it after authentication (done via the afterAuthPath prop on your AuthSection component), and then presenting them with a form. You may find your SettingsGeneral component to be a good form example to copy this case.