Question

I have a List of Models (List items) that I loop over in my template :

@for(item <- items) {
    // ...
}

I’d like to get the key/index position of the item in items for two reasons :

1. I will show something like Item n° @key
2. I’d like to show only 1/2 items (I suppose : if (@key % 2))

How can I get the key/index if using a List and not a Map ?

Thanks for your help

Answer 1

You can zip the list with its indices:

@defining(List("foo", "bar", "baz")) { items => 
  @for((item, i) <- items.zipWithIndex if i % 2 == 0) {
    @item no @i <br/>
  }
}

Which prints:

foo no 0 
baz no 2