Play2 - Template -> incrementing

Question

How do I declare and increment a variable in play2? (in .scala.html templates)

Pseudo code:

@counter
@for(l <- list){
<span class="data-@counter">


</span>
@(counter += 1)
}

That's little bit tricky, write us what exactly do you want to iterate, I'll try to find some sample — biesior, Sep 03 '12 at 17:00
I edited my post, if this is tricky I could do it in java with a static function something like `@increment()` . I just thought it would be cleaner if I do this in the template itself. — Maik Klein, Sep 03 '12 at 17:06

score 18 · Accepted Answer · answered Sep 03 '12 at 17:32

18

Do you really need counter and incrementing? You can do this:

@for((l, index) <- list.zipWithIndex){
    <span class="data-@index">@l</span>     
}

Method zipWithIndex creates list of tuples.

answered Sep 03 '12 at 17:32

Infinity

Yes, thanks, that's I was needed too ;) (read: that's the sample I was looking for) – biesior Sep 03 '12 at 17:38
Beautiful. Just what I needed. – Jonathan Wilson Jun 07 '13 at 03:22

score 6 · Answer 2 · answered Feb 19 '14 at 12:06

6

to declare at template

@import java.math.BigInteger; var i=1

for increment in template

@(i+=1)

answered Feb 19 '14 at 12:06

Govind Singh

expected class or object definition error throwed at ```@import java.math.BigInteger; var i=1 ``` – Mesut Yiğit Apr 26 '18 at 15:43

2 Answers2