Reusable Scala code for all views in Play

Question

I know I can declare a reusable pure Scala block like this in a template:

@title(text: String) = @{
  text.split(' ').map(_.capitalize).mkString(" ")
}

I can now call @title("someString") in the template but this code block is not accessible from outside this template.

How can I declare such a block that is accessible from other templates as well?

I've tried to create a new template title.scala.html like this:

@(text : String)
@{
    text.split(' ').map(_.capitalize).mkString(" ")
}

I can now call @title("someString") from any template I want, but this doesn't give me the exact same result as the first block, inside the template (I assume in the first case it returns a String whereas it returns Html in the second case).

I'm using Play framework 2.0.4 and I'm coding in Java (hence my limited Scala knowledge).

Answer 1

Using tags is targeted for building reusable blocks of HTML code, therefore it returns Html

To work easily with common types of data you can easily add a custom Java class (for an example in freshly created utils package (in app directory), and prepare in it all required formatters as a static methods:

utils.MyFormats.java:

package utils;

import org.apache.commons.lang3.text.WordUtils;

public class MyFormats {

    public static String capitalize(String str) {
        return WordUtils.capitalize(str);
    }

    public static int sumElements(int a, int b) {
        return a + b;
    }

}

In template:

<h2>Capitalized each word: @(utils.MyFormats.capitalize("foo bar"))</h2>
<h3>Sum of two integers, 2+3 = @(utils.MyFormats.sumElements(2, 3))</h3>