Formatting in play scala templates

While play1.x had rich support for formatting with javaextensions in play2 we rely on what scala language can provide us.

Formatting numbers

Probably the most convenient way to format numbers is to use the scala Strings format

@* left padding zeroes *@
@("%03d".format(7))

@* leading spaces *@
[@("% 4d".format(11))]

@* with 2 decimals *@
@("%.2f".format(1123.345566))

@* with locale *@
@("%.2f".formatLocal(Locale.US, 1123.345566))

generates

007

[  11]

1123,35

1123.35

Formatting dates

format also works with dates

@* just time *@
@("%tT".format(1312180002230L))

@* date *@
@("%tF".format(1312180002230L))

@* date and time *@
@("%1$tH:%1$tM:%1$tS.%1$tL %1$tY.%1$tm.%1$td".format(1312180002231L))

converts our timestamp to

09:26:42

2011-08-01

09:26:42.231 2011.08.01

Formatting strings

For string formatting we use the functional power of scala

@* lower case *@
@("AbC".toLowerCase)

@* upper case *@
@("aBc".toUpperCase)

@* capitalize *@
@("abc".capitalize)

@* capitalize each word *@
@("The quick brown FOX jumps over the lazy dog"
    .split(" ")
    .map(_.toLowerCase.capitalize)
    .mkString(" "))

converts them to

abc
ABC
Abc
The Quick Brown Fox Jumps Over The Lazy Dog