how to get data from cloud firestore where user.uid equal to document id in flutter?

Question

I am Having this profile screen which shows users info. after user authenticated I am storing data in cloud firestore with document id is equal to user-id. Now, I want to retrieve data from cloud firestore with having current userId is equal to document id.

For now i have this :

class UserManagement {
  getData() async{
    String userId = (await FirebaseAuth.instance.currentUser()).uid;
    print(userId);
    return Firestore.instance.collection('users').document(userId);

  }

but this is not working properlywhen i log out and after re-login with different user it showing me same data.

UserManagement().getData().then((results) {
    setState(() {
      userFlag = true;
       users = results;
    });
    });

Now, how get other fields like name,email,course,phonenumber..etc and all values all storing into user.right?

score 6 · Accepted Answer · answered Jan 25 '20 at 18:24

6

If the document id in your firestore is equal to the userid in the Firebase authentication console, then you need to retrieve the uid first and pass it as an argument to the method document():

getData() async{
    String userId = (await FirebaseAuth.instance.currentUser()).uid;
    return Firestore.instance.collection('users').document(userId);
  }

answered Jan 25 '20 at 18:24

Peter Haddad

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then in profile what changes i have to make? UserManagement().getData().then((QuerySnapshot docs){ userFlag = true; users = docs.documents[users.userId].data; }); – Sandeep Sharma Jan 26 '20 at 08:06
If the document id is the same as the current user logged in id, then yes u can easily get any document using the UserId – Peter Haddad Jan 26 '20 at 08:30
What is the problem – Peter Haddad Jan 26 '20 at 08:32
`Firestore.instance .collection('users') .document(userId) .get() .then((DocumentSnapshot ds) { // use ds as a snapshot ds['name'] });` – Peter Haddad Jan 26 '20 at 08:38
To get other fields check the code in the comment above ^ – Peter Haddad Jan 26 '20 at 08:39
`UserManagement().getData().then((results) { setState(() { userFlag = true; users = results; }); });` – Sandeep Sharma Jan 26 '20 at 08:46

score 1 · Answer 2 · answered Jan 25 '20 at 16:59

1

Your query is fetching all of the documents in the "userData" collection, then picking out the first document from that entire set. This will be the same set of documents for all users that have read access to that collection. I don't see why you would expect a different result for different users. Perhaps you meant to access a single document for a user given their user ID, instead of all of the documents. If that's the case, you should request that document by its ID with Firestore.instance.collection('userData').document(uid)' whereuid` is the ID of the currently signed in user.

Also, your code is querying a collection called "userData", but your screenshot shows a collection called "users", so that is confusing.

answered Jan 25 '20 at 16:59

Doug Stevenson

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you mean my getData function will look like this?: ```getData(String uid){ return Firestore.instance.collection('users').document(uid); }``` – Sandeep Sharma Jan 25 '20 at 17:15
I don't know - does that do what you want? Your question isn't very clear about what your goal is. – Doug Stevenson Jan 25 '20 at 17:16
and how to get uid of current user? FireBase user = FirebaseAuth.instance.currentUser(); – Sandeep Sharma Jan 25 '20 at 17:17
My goal is to retrive data from firestore having document Id is equal to current user uid. – Sandeep Sharma Jan 25 '20 at 17:20

how to get data from cloud firestore where user.uid equal to document id in flutter?

2 Answers2

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