delete element from cloud firestore array in swiftui - swift

Question

I'm trying to remove an element (only one) from an array using arrayRemove() but all elements in my "note" array are removed
Note struct:
struct Notes: Identifiable {
var id = UUID().uuidString
var nom: [String]
}
Category struct:
struct Categorys: Identifiable {
var id = UUID().uuidString
var idDoc: String
var note: Notes
}
viewModel:
class DataManager: ObservableObject {
#Published var note: [Notes] = []
#Published var cat: [Categorys] = []
func deleteFields2(cat: Categorys) {
let db = Firestore.firestore()
guard let userID = Auth.auth().currentUser?.uid else {return}
let note = cat.note.nom
db.collection("Users").document(userID).collection("Categorys").document(cat.idDoc).updateData([
"note": FieldValue.arrayRemove(note)
]) { err in
if let err = err {
print("Error updating document: \(err)")
} else {
print("Document successfully updated")
}
}
}

Answer 1

To remove an item from the note array, you need to pass the exact value of that array item to arrayRemove. Your code passes an array to arrayRemove, so the code will remove any array item that is an array with the value you specify - which doesn't exist in the screenshots.
To remove the string item from the array, pass a string value to arrayRemove. For example:
db.collection("Users").document(userID).collection("Categorys").document(cat.idDoc).updateData([
"note": FieldValue.arrayRemove("cheese")
])