Flutter Firestore adding data

Question

I want to add data on firestore and it wont work. can somebody help me. This is the newest updated version and I can't figure out how... firebase_auth: ^0.18.0+1 cloud_firestore: ^0.14.0+2

This is the sign up screen so I want to send data after I create the email and password. I want to add the document with user uid too.

onPressed: () async { try { UserCredential userCredential = await FirebaseAuth .instance .createUserWithEmailAndPassword( email: _emailController.text, password: _passwordController.text, ); if (userCredential != null) { firestore .collection("user") .doc('user.uid') .set({ 'username': username, 'email': email, }) .then((value) => print("User Added")) .catchError((error) => print("Failed to add user: $error")); Navigator.of(context).pushNamed(AppRoutes.authLogin); } } catch (e) { print(e); _usernameController.text = ""; _passwordController.text = ""; _repasswordController.text = ""; _emailController.text = ""; //TODO: alertdialog with error } setState(() { saveAttempted = true; }); if (_formKey.currentState.validate()) { _formKey.currentState.save(); } },

Can someone help me with the firestore.. Thank you..

use if (_formKey.currentState.validate()) { _formKey.currentState.save(); } to wrap the rest of the function... That way you save the form first so that you can post its data — king mort
– king mort, Commented Sep 22, 2020 at 9:47
to store the user document by user id you need to get the user info from firebase. there you will have the user id. I have share comprehensive code below — king mort
– king mort, Commented Sep 22, 2020 at 9:48

king mort · Accepted Answer · 2020-09-22 09:50:53Z

First Create a User class.

 class UserData { final String userId; final String fullNames; final String email; final String phone; UserData( {this.userId, this.fullNames, this.email, this.phone}); Map<String, dynamic> getDataMap() { return { "userId": userId, "fullNames": fullNames, "email": email, "phone": phone, }; } }

Then you can use a function like this one to save the credentials and save the data to firestore

createOrUpdateUserData(Map<String, dynamic> userDataMap) async { FirebaseUser user = await FirebaseAuth.instance.currentUser(); DocumentReference ref = Firestore.instance.collection('user').document(user.uid); return ref.setData(userDataMap, merge: true); }

==

bool validateAndSave() { final form = _formKey.currentState; if (form.validate()) { form.save(); return true; } return false; } void validateAndSubmit() async { if (validateAndSave()) { try { String userId = _formType == FormType.login ? await widget.auth.signIn(_email, _password)//use your signin : await widget.auth.signUp(_email, _password);//use your signup if (_formType == FormType.register) { UserData userData = new UserData( fullNames: _fullNames, email: _email, phone: "", ); createOrUpdateUserData(userData.getDataMap()); } } catch (e) { setState(() { _isLoading = false; switch (e.code) { case "ERROR_INVALID_EMAIL": _authHint = "Your email address appears to be malformed."; break; case "ERROR_EMAIL_ALREADY_IN_USE": _authHint = "Email address already used in a different account."; break; case "ERROR_WRONG_PASSWORD": _authHint = "Your password is wrong."; break; case "ERROR_USER_NOT_FOUND": _authHint = "User with this email doesn't exist."; break; case "EMAIL NOT VERIFIED": _authHint = "Email not verified: Please go to yor email and verify"; break; case "ERROR_USER_DISABLED": _authHint = "User with this email has been disabled."; break; case "ERROR_TOO_MANY_REQUESTS": _authHint = "Too many Attemps. Account has temporarily disabled.\n Try again later."; break; case "ERROR_OPERATION_NOT_ALLOWED": _authHint = "Signing in with Email and Password is not enabled."; break; case "ERROR_ACCOUNT_EXISTS_WITH_DIFFERENT_CREDENTIAL": _authHint = "The email is in use by another account"; break; default: _authHint = "An undefined Error happened."; } }); print(e); errorDialog(context, _authHint); } } else { setState(() { _authHint = ''; }); }

}

Then use

onpressed:(){ validateAndSubmit(); }

the formtype is an Enum

enum FormType { login, register, reset }

widget.auth.signIn and widget.auth.signUp should be replaced with your signin and signup respectively.

Added a custom error block to differentiate firebase auth errors as well.

Defining an auth page independently will help you reuse your code in future.

Rishita Joshi · Accepted Answer · 2024-02-01 15:00:56Z

// to insert the document id to the firestore datbase you can use the docid.id;

Future<String> saveToFirebase(UserModel userModel) async { final docTodo = fireStore .collection("users") .doc(firebaseUser!.uid) .collection("userInfo") .doc(); await docTodo.set(UserModel( userName: userModel.userName, email: userModel.email, phoneNumber: userModel.phoneNumber, address: userModel.address, city: userModel.city, id: docTodo.id) .toJson()); return docTodo.id; }

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