Adding user information to firebase (signup) react native-CodePudding

createUserWithEmailAndPassword(auth, state.email, state.password)
        .then((userCredential) => {
          setDoc(doc(db, "users", userCredential.user.uid), {
            firstName: state.firstName,
            lastName: state.lastName,
            email: state.email,
            address: state.address,
            username: state.firstName,
          })

Hi, im trying to add username in firebase user collection. Username should be firstname.lastname but I dont know how should I type that. This is currently working perfect but I just want add in username field "Lastname" but dont know how

CodePudding user response：

You are on the right track. You just need to join the first and last names together.

You can use as strings can be added or use string interpolation (which is more elegant).

// adding strings 
const username = state.firstName   '.'   state.lastName;

// using string interpolation.
// here, you use the backtick character (`), it is usually found below escape.
// then use ${variable} to interpolate variable.
const username = `${state.firstName}.${state.lastName}`;

So your final code could look like the following. I formatted it and used async/await (because setDoc returns a promise). I also made the code more elegant with object destructuring.

createUserWithEmailAndPassword(auth, state.email, state.password) 
 .then(async (userCredential) => {
    const { address, email, firstName, lastName } = state;
    const username = `${firstName}.${lastName}`;
    await setDoc(
      doc(db, 'users', userCredential.user.uid), 
      { address, email, firstName, lastName, username },
    );
 });