Firebase Storage Security Rules Problelm

Question

I made a web app in which users images store in firebase storage with folder of their user authentication id. I want to set security rules for all of these folder created with user id.
There is also other folder in which web app home image saved.

I try many times to setup security rules but there is problem every time in deleting and getting images

rules_version = '2';
service firebase.storage {
match /b/{bucket}/o {

match /{userId} {

allow read;
allow update,delete:if request.auth.uid == userId;
allow create: if request.auth != null;

}
}
}

Answer 1

the syntax looks abit problematic try the following syntax.

service firebase.storage {
match /b/{bucket}/o {
match /user/ {
match /thumbnails/{userId}/{thumbnail} {
allow read: if request.auth.uid == userId;
}
match /uploads/{userId}/{upload} {
allow write: if request.auth.uid == userId;
}
}
}
}