updating and newfield to the firebase

       floatingActionButton: FloatingActionButton(
        onPressed: () async {


          List<TempPost> posts = await fetchallPost() ;
          print("return back to floating action");



/*
          posts.forEach((element) {
            print(element.description);
            print(element.ownerPhotoUrl);
            print(element.id);
            print(element.ownerEmail);
            print(element.ownerId);
            print(".................................................");
          });

*/

         /*
          flutter ( 3738): return back to floating action
          I/flutter ( 3738): Image tells the secret
          I/flutter ( 3738): https://firebasestorage.googleapis.com/v0/b/socialmdeiaapp.appspot.com/o/images%2F1685724234769?alt=media&token=b2f67a4e-8587-4d9b-aa31-51fc035ac3d4
          I/flutter ( 3738): 1lNW54eZ87CJpMSY2oO0
          I/flutter ( 3738): anik11556@gmail.com
          I/flutter ( 3738): YKjcFlzKIrf4kSVxHWQJEcqIutZ2
          */
          String? newPostId;  //=  "1lNW54eZ87CJpMSY2oO0";
          String? fieldvalue; //= "anik11556@gmail.com";
          CollectionReference collection = FirebaseFirestore.instance.collection('all_Posts');


/*


          try {
            await collection.doc(newPostId).update({
              'ownerEmail': fieldvalue,
            });
            print('Field "newField" added successfully.');
          } catch (e) {
            print('Error adding field: $e');
          }


*/



          posts.forEach((element) async {
            newPostId = element.id;
            fieldvalue = element.ownerPhotoUrl;
            try {
              await collection.doc(newPostId).update({
                'ownerPhotoUrl': fieldvalue,
              });
              print('Field "postId" updated successfully.');
            } catch (e) {
              print('Error updating field: $e');
            }
          });




        },
      ),
//////////////////////////////////////////////////////////////////////////////////////////


  List<TempPost> tempPosts = [];

  Future<List<TempPost>> fetchallPost() async {

    print("user fetching");
    List<User> users = await GetWant().getAllUserfromJson();
    //users.forEach((element) {print(element.userName);});

    print("Post Fetching");
    CollectionReference collection = FirebaseFirestore.instance.collection('all_Posts');
    QuerySnapshot querySnapshot = await collection.get();


    querySnapshot.docs.forEach((doc) {

      String? idd = doc.id;
      String? id = doc.id;//doc.get('id');
      String? postId = doc.get('postId');
      String? userName = doc.get('userName');


      String? ownerId = doc.get('ownerId');


      String? location = doc.get('location');
      String? timestamp = doc.get('timestamp');
      String? mediaUrl = doc.get('mediaUrl');
      String? description = doc.get('description');


/*
      Post curPost =  Post.Complete(id,postId,userName,ownerId,location,timestamp,mediaUrl,description);
      bool exists = Post.posts.any((entity) => entity.postId == curPost.postId);
*/


/*
      print(idd);
      print(postId);
*/

      int index = users.indexWhere((obj) => obj.id == ownerId);
/*
       print(ownerId);
       print(users[index].email);
      print(users[index].userName);
      print(users[index].id);
*/


      ownerId = users[index].id ;
      String? ownerEmail=users[index].email;
      String? ownerPhotoUrl=users[index].photoUrl;


      TempPost curPost =  TempPost.Complete(id,postId,userName,ownerId,location,timestamp,mediaUrl,description,ownerEmail,ownerPhotoUrl);
      bool exists = tempPosts.any((entity) => entity.postId == curPost.postId);





      // print(curUser.userName);
      // //print(DateFormat("MMMM d, y 'at' h:mm:ss a 'UTC'z").format(curUser.lastSeen.toDate()).toString());
      // print(curUser.time.toDate());
      if(exists)
      {
        //print("already in the list");
      }
      else
      {
        //  print("not exist in the list");
        tempPosts.add(curPost);
      }

    });

    print(tempPosts.length);

    return tempPosts;

  }