7.3.7 Tag return value - Reference Documentation
Authors: Graeme Rocher, Peter Ledbrook, Marc Palmer, Jeff Brown, Luke Daley, Burt Beckwith, Lari Hotari
Version: 2.3.8
7.3.7 Tag return value
Since Grails 1.2, a tag library call returns an instance oforg.codehaus.groovy.grails.web.util.StreamCharBuffer
class by default.
This change improves performance by reducing object creation and optimizing buffering during request processing.
In earlier Grails versions, a java.lang.String
instance was returned.Tag libraries can also return direct object values to the caller since Grails 1.2..
Object returning tag names are listed in a static returnObjectForTags
property in the tag library class.Example:
class ObjectReturningTagLib { static namespace = "cms" static returnObjectForTags = ['content'] def content = { attrs, body -> CmsContent.findByCode(attrs.code)?.content } }