How to search for user data and retrieve them from firebase with flutter?

Question

I am trying to retrieve user data that I stored on firebase database and compare it to an inputed text "trying to login but with another way ;)" but when I search for examples I can't quite understand their methods of retrieving data they don't retrieve specific data but the collection, so any ideas?

score 1 · Accepted Answer · answered Jun 22 '20 at 08:06

1

To get the data you need to do the following:

  void getUserData() async{
    var firebaseUser = await FirebaseAuth.instance.currentUser();
    firestoreInstance.collection("users").document(firebaseUser.uid).get().then((value){
      print(value.data);
    });
  }

Assuming you are using Firebase authentication as the document id

answered Jun 22 '20 at 08:06

Peter Haddad

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assumbtion = true :) – omar developer Jun 22 '20 at 08:09
But How can I get the email or the password after and store it in a const – omar developer Jun 22 '20 at 08:10
`value.data` will contain the email and password, you can do `value.data["email"]` and `value.data[password"]` – Peter Haddad Jun 22 '20 at 08:11
about storing it – omar developer Jun 22 '20 at 08:13
store it to an instance variable and cal setState – Peter Haddad Jun 22 '20 at 08:15
It's Ok now , Sorry false alarm. – omar developer Jun 22 '20 at 08:24
Can I change thw way to search for the document by replacing 'firebase.uid' with any thing else right – omar developer Jun 22 '20 at 08:26
if u have uid as a document id, then you need to use the above in the answer – Peter Haddad Jun 22 '20 at 08:28
what about searching by the username that the user entered, Is it possible? – omar developer Jun 22 '20 at 08:28
Like storing the value of username in a controller and put the controller in firebase.uid – omar developer Jun 22 '20 at 08:29
https://petercoding.com/firebase/2020/04/04/using-cloud-firestore-in-flutter/ – Peter Haddad Jun 22 '20 at 08:30
What is a query? – omar developer Jun 22 '20 at 08:30
2

U seem like a smart guy :) – omar developer Jun 22 '20 at 08:30

score 0 · Answer 2 · answered Jul 09 '21 at 10:41

0

You can use the "where" function in firestore

FirebaseFirestore.instance
.collection('users')
.where('email', isEqualTo: your_text_controller)
.get()
.then(...);

answered Jul 09 '21 at 10:41

Saffron-codes

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How to search for user data and retrieve them from firebase with flutter?

2 Answers2