Is it possible to have two init in an ObservableObject class?

I have created an ObservableObject object class, and I need to create 2 inits one with passing a string parameter and another without passing.

class DictionaryModel: ObservableObject {
    @Published var dbName: String = ""
    private var dbQueue: DatabaseQueue!
    var localDBFile: String

//this `init` works fine:

init(_ localDBName: String) {
        self.localDBFile = localDBName
        var config = Configuration()
        config.readonly = false
        guard let dbPath = Bundle.main.path(forResource: localDBName, ofType: "sqlite") else { return }
        do {
            self.dbQueue = try DatabaseQueue(path: dbPath, configuration: config)
        } catch let error {
            print(error.localizedDescription)
        }
    }

}

for the second init I need to change @Published var dbName on different occasions, for example when user choose another database. I need this changing dbName to affects on all views like bookmark, searching and etc..

init() {
    var config = Configuration()
    config.readonly = false
    let documentDirectoryURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
    let dbPath = documentDirectoryURL.appendingPathComponent("\(dbName).sqlite").path
    
    do {
        self.dbQueue = try DatabaseQueue(path: dbPath, configuration: config)
    } catch let error {
        print(error.localizedDescription)
    }
    fetchBookmarks()
}

I keep getting this error self' used in property access 'dbName' before all stored properties are initialized. Is there any way to have two inits in one class one with passing parameter and another without any?

Solution

Is there any way to have two inits in one class one with passing parameter and another without any?

Absolutely. But you cannot violate the rules: you cannot, as the error message tells you, "access dbName before all stored properties are initialized." And what stored properties are there? localDBFile. You must set localDBFile to something — and you are not doing that. Even if you just set it to an empty string, you must set it to something.

Moreover, your declaration private var dbQueue: DatabaseQueue! is a really bad idea. Exclamation mark means "crash me". This is an accident waiting to happen.