i want to access child node data using parent node name flutter firebase data base-CodePudding

{
  
  "centers": {
    "DCSE": {
      "centerName": "DC"
    },
    "SE": {
      "centerName": "ccc"
    },
  }
}

stdRef =FirebaseDatabase.instance.ref().child('centers').child('centerName'); i would like to access centerName without knowing its nodes names DCSE and SE as its possible to do? i want to access centerName with parent name cneter instead of centers.DCSE.centerName

child('centers').child('centerName') directly????

CodePudding user response：

If you don't know which center to show the name of, all you can do is show the name of all centers. That'd be something like:

final centersRef = FirebaseDatabase.instance.ref("centers");

centersRef.onValue.listen((event) {
  for (final centerSnapshot in event.snapshot.children) {
    print('${centerSnapshot.child("centerName").value}');
  }
}, one rror: (error) {
  // Error.
});

Also see the Firebase documentation on listening for value events.