eclipse - "object index is not a member of package views.html" when opening scala play project in scala ide

Question

I've created a play project with play 2.3.7

In the project directory, I ran activator and ran the eclipse command to generate eclipse project files.

When I go to eclipse (I'm using the Scala IDE from typesafe Build id: 4.0.0-vfinal-20150119-1023-Typesafe , there is an error in my Application.scala file:

object index is not a member of package views.html

Is there something amiss with my setup? The app runs fine when I execute run at the activation console prompt.

Thanks!

EDIT: Added code

package controllers

import play.api._
import play.api.mvc._

object Application extends Controller {

  def index = Action {
    Ok(views.html.index("Your new application is ready."))
  }

} 

The error is on the 'Ok..' line.

There is a file in views called index.scala.html, and the app runs file when I run it from activator..

Answer 1

Occasionally after adding a view in Play 2.4.x, IntelliJ IDEA sometimes gets confused and absolutely refuses to build. Even rebuild Project fails:

This still happens from time-to-time in IDEA 15. And when it does, the command line provides the quickest, most-reliable fix:

sbt clean; sbt compile

That's it! IDEA will now compile the project as expected.

Update:

In the rare case that sbt compile completed successfully on the command line, but IntelliJ IDEA 15 still gives the same "object x is not a member" error, then this has solved IDEA's confusion:

File Menu: