flutter: how can I retrieve current user data from firebase firestore-CodePudding

am trying to retrieve current user data but it showing all the users data from firestore in app here is my code

 Widget build(BuildContext context){
 CollectionReference users = FirebaseFirestore.instance.collection('users');
  return FutureBuilder<DocumentSnapshot>(

  future: users.doc(documentId).get(),
  builder: ((context, snapshot){ 
    if(snapshot.connectionState == ConnectionState.done){
      Map<String, dynamic> data = 
      snapshot.data!.data() as Map<String, dynamic>; 
      return Container(
        child: Column(
          children: [
            Text('Email : '"${data['Email name'].toString()}",
            style: const TextStyle(fontWeight: FontWeight.bold,wordSpacing: 10),),
            const SizedBox(
              width: 10,
            ),
            Text('Contact : '"${data['age'].toString()}",
            style: const TextStyle(fontWeight: FontWeight.bold,wordSpacing: 10),),
            const SizedBox(
              width: 10,
            ),
            Text('Name : '"${data['firstname'].toString()}",
            style: const TextStyle(fontWeight: FontWeight.bold,wordSpacing: 10),),
            const SizedBox(
              width: 10,
            ),
            Text('Last Name : '"${data['lastname'].toString()}",
            style: const TextStyle(fontWeight: FontWeight.bold,wordSpacing: 10),),
            const SizedBox(
              width: 10,
            ),

          ],
        ),
      );
    }
    return const Text('Loading');
  }),

here is documentId code

  List<String> docIDs = [];

  Future getDocId() async{
  await FirebaseFirestore.instance.collection('users').get().then(
  (snapShot) => snapShot.docs.forEach(
    (documant){
    print(documant.reference);
    docIDs.add(documant.reference.id);
    }));
    }

     body: Center(
     child: Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        // ignore: prefer_const_constructors
        Text('SignUp as ${user!.email!}',style: TextStyle(
          fontSize: 20,
        ),),
        Expanded(child: FutureBuilder(
          future: getDocId(),
          builder: (context, snapshot){
            return ListView.builder(
              itemCount: docIDs.length,
              itemBuilder: (context, index){
                return ListTile(
                  title: GetuserData(documentId: docIDs[index]),
                );
              },
            );
          },
        ))

when ever user post the form it submitted successfully and generate a post like summited form history but it showing to others users to but i wont it for only current user how to do that please any one can help me

CodePudding user response：

You can use firestore query to return the current user using where()

on getDocId():

await FirebaseFirestore.instance.collection('users').get()

change to

await FirebaseFirestore.instance.collection('users')
                       .where('Email name', isEqualTo: '[email protected]').get()

you can replace the email with your or consider using parameter to pass user email dynamically.