Can I use grails tag outside of GSP?

问题:

For example, i can put

 <g:createLink controller="user" action="show" /> 

inside a .gsp file and it will work nicely.

But also I'd like to use the same closure createLink inside a .groovy file which is not part of the grails views

回答1:

You can use taglib methods from Grails controllers, for example:

def userShow = g.createLink(controller:"user", action:"show")

For builtin taglibs (or those in the g namespace) you can omit the namespace prefix in the method call.

回答2:

Inject the grailsApplication into your service/filter.

def grailsApplication

And get the Spring bean.

def g = grailsApplication.mainContext.getBean('org.codehaus.groovy.grails.plugins.web.taglib.ApplicationTagLib')
def userShow = g.createLink(controller: 'user', action: 'show')

回答3:

For unmanaged classes you can reference the g taglib with:

def g = ApplicationHolder.application.mainContext.getBean('org.codehaus.groovy.grails.plugins.web.taglib.ApplicationTagLib')

回答4:

The native way to do this as of Grails 2.0 outside of controllers (so for services, async jobs, etc) is to use the LinkGenerator class. Works everywhere and mentioned in the official docs. See example here

http://mrhaki.blogspot.ca/2012/01/grails-goodness-generate-links-outside.html