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flutter firebase personal user data

// firebase authentication works with firestore database to collect personal data

final CollectionReference _userCollection = FirebaseFirestore.instance.collection('users');
 
FirebaseAuth.instance.createUserWithEmailAndPassword(email: email, password: password).then((value) {
	// set personal user data by user id 
	_userCollection.doc(FirebaseAuth.instance.currentUser!.uid).set({
    	"email": email, 
    	"name": name,
    	"weight": weight,
    	"height": height,
    	"age": age,
    	"gender": gender 
	});
}