Scala PlayFramework how can I inject repository method inside function - scala

Question

I am using the play framework version 2.49, I am trying to do a dependency injection and it is my first time doing this. I have 3 Folders Interface : Repository : Controllers. The interface lays out abstract methods that I implement inside a repository folder then inject into a controller action. I am only lost when it comes to the controller action. Here is a sample code of mines
Interface
package Interface
abstract class Iprofiles {
def edit_profile
def view_profile
def forgot_password
}
Repository
package Repository
import Interface.Iprofiles
import slick.driver.PostgresDriver.api._
class ProfileRepository extends Iprofiles {
val db= Database.forConfig("database")
// These 3 methods will have Database logic soon
def edit_profile: Unit
def view_profile: Unit
def forgot_password: Unit
}
Controller
package controllers
import play.api.data.Form
import play.api.data.Forms._
class Relations extends Controller {
def MyAction() = Action {
// How can I inject edit_profile in the repository folder here
Ok()
}
}
My Repository methods are empty right now but I will have Data logic in them soon. In My controller MyAction() method for example how can I do a DI and include edit_profile from the repository folder ? I have been searching for how to get this done but nothing has worked

Answer 1

Dependency Injection on the JVM is currently only about injecting object references, not method references. That is, in a class you declare a dependency to a type (typically an interface) and define the mapping from this (interface) type to an implementation (type) in the injector configuration.
During injection -typically during object construction - you get a reference to an object of the implementation type injected.
Then you can call all methods on that injected object.
So you need an attribute taking the reference and this is typically filled via a constructor parameter.