Use of unresolved identifier 'Model' in swift

Question

In my Swift project I have created class named Model:

class Model : NSObject
{
    func createDatabase(nameOfTheDataBase: String  ) ->String
    {
     // do something and return String
    }
}

and when I tried to use this class in another class

  public class User
   {
     var databasePath = String()
     var path : String?
     public func create() -> String
    {
     databasePath = Model().createDatabase("ShoppingPad.sqlite")
    // return something
    }
  }

This gives an error

Use of unresolved identifier 'Model'

I tried to clean and then build my project. But error reappears.

Answer 1

If you're going to do more than just return the database path, you should look into singletons as a means of making the database functions accessible to all classes. There are lots of tutorials and examples out there, but it looks like this

class Model
{
    static let sharedInstance: Model = {
        let instance = Model()
        // setup code
        return instance
    }()

    func createDatabase(nameOfTheDataBase: String  ) ->String
    {
        // do something and return String
        return "Bob"
    }

}

public class User
{
     var databasePath = String()
     var path : String?

    public func create() -> String
    {
        databasePath = sharedModel.createDatabase("ShoppingPad.sqlite")
        // return something
        return databasePath
    }
}