dart - How to delete a Firebase Storage file with flutter?

Question

I'm new to both Flutter and Firebase, so bear with me on this one.

I am trying to delete a File in my Firebase Storage using the file Url.

I have the full Url of the file and remove all characters excluding the file path.

Then I try to delete the file. From following other answers on here I use the command; FirebaseStorage.instance.ref().child(filePath).delete()

Below is my code;

static void deleteFireBaseStorageItem(String fileUrl){

  String filePath = 'https://firebasestorage.googleapis.com/v0/b/dial-i-2345.appspot.com/o/default_images%2Fuser.png?alt=media&token=c2ccceec-8d24-42fe-b5c0-c987733ac8ae'
                  .replaceAll(new 
                  RegExp(r'https://firebasestorage.googleapis.com/v0/b/dial-in-2345.appspot.com/o/'), '');

  FirebaseStorage.instance.ref().child(filePath).delete().then((_) => print('Successfully deleted $filePath storage item' ));

}

The problem is the file never gets deleted.

I think I have tracked down where the problem is.

In the .delete() method there is a required 'app' and 'storageBucket' value.

When I run this function the values are null.

I find this confusing because in the same file i see this;

/// The [FirebaseApp] instance to which this [FirebaseStorage] belongs.
///
/// If null, the default [FirebaseApp] is used.
final FirebaseApp app;

/// The Google Cloud Storage bucket to which this [FirebaseStorage] belongs.
///
/// If null, the storage bucket of the specified [FirebaseApp] is used.
final String storageBucket;enter code here

From the documentation I can see maybe I need to use the 'Firebase core' plugin to make the app which links the bucket to that database. But there is not much specific to Dart & flutter.

Does anyone have any experience with this?

Found Temporary solution

So there is not a method to convert the Url to a storage reference at the moment. Hopefully it will come out in a Firebase update.

Here was my hack

 static void deleteFireBaseStorageItem(String fileUrl){

String filePath = fileUrl
                  .replaceAll(new 
                  RegExp(r'https://firebasestorage.googleapis.com/v0/b/dial-in-2345.appspot.com/o/'), '');

filePath = filePath.replaceAll(new RegExp(r'%2F'), '/');

filePath = filePath.replaceAll(new RegExp(r'(?alt).*'), '');

StorageReference storageReferance = FirebaseStorage.instance.ref();

storageReferance.child(filePath).delete().then((_) => print('Successfully deleted $filePath storage item' ));

}

I know.... i know....

Ps 'dial-in-2345.appspot.com' is relevant to my app and you would need to change it.

Answer 1

Waitting for answers