Calculation in Play 2.0 Framework template engine
Question
Does play 2.0 template engine support the simple calculation in the html page.
Let us say, I create a sum.scala.html page:
@(a:String, b: String)
<html>
<head></head>
<body>
<h1> answer is getSum(@a,@b) </h1>
</body>
</html>
Is there any way that we could "getSum of a and b" via some function? or Does any play 2.0 expert know any good idea about calculation in play 2.0 template engine? Thanks
4 answers
solution1
11 ACCPTED 2012-04-05 08:59:08
Have you tried @(a.toInt + b.toInt) ?
solution2
3 2012-04-05 08:19:42
You can just pass the value to template, can't you?
@(a:String, b: String, c: String)
<h1> answer for @a + @b is @c </h1>
You can also call function from Yourcontroller in the template:
@Yourcontroller.getSum(a,b);
In /app/controllers/Yourcontroller.java ad the function (simplest sample):
public static Integer getSum(String a, String b){
Integer c = Integer.valueOf(a) + Integer.valueOf(b);
return c;
}
solution3
2 2012-04-05 12:42:07
If you want to refer to the result multiple times, you can use defining :
@defining(a.toInt + b.toInt) { sum =>
<h1>The sum is @sum</h1>
The sum of @a + @b is @sum
}
solution4
0 2013-06-03 11:12:18
For reuse of your code in scala html template. You can make a template function in template for this.
@sum(a:Long,b:Long) = {
@(a + b)
}
And call this in your template as normal functions. Like @sum(2,3)
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