nl2br in grails, english version

PHP has one function that converts String's breaklines "/n" into <br> html tags.

Grails doesn't have a similar function to format Strings this way, but we can make our own Grail's codec, in order to obtain the same result as in PHP:

1. Create your own codec
2. Call it directly from the GSP page

1. To create the new codec, you just need to create a Grail's class in the folder grails-app/utils/ , like this:

NL2BRCodec.groovy (The file has to be named with the 'Codec' sufix)

class NL2BRCodec{
static encode = { string ->
string.trim().replaceAll("\n","<br>")
}
}

That's all, now, from the GSP page, you just have to call the codec like this:

<g:encodeAs codec="NL2BR">${object.stringValue}</g:encodeAs>

Or:

${object.stringValue.encodeAsNL2BR()}