7.3.7 Tag return value 2.3.8

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(Quick Reference) # 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 of `org.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
        }
    }
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