link
Purpose
Creates an html anchor tag with the href
set based on the parameters specified.
Examples
Example controller for an application called "shop":class BookController {
def list = { [ books: Book.list( params ) ] }
def show = { [ book : Book.get( params['id'] ) ] }
}
Example usages for above controller:<g:link action="show" id="1">Book 1</g:link>
<g:link action="show" id="${currentBook.id}">${currentBook.name}</g:link>
<g:link controller="book">Book Home</g:link>
<g:link controller="book" action="list">Book List</g:link>
<g:link url="[action:'list',controller:'book']">Book List</g:link>
<g:link action="list" params="[sort:'title',order:'asc',author:currentBook.author]">
Book List
</g:link>
<g:link controller="book" absolute="true">Book Home</g:link>
<g:link controller="book" base="http://admin.mysite.com">Book Home</g:link>
Example as a method call in GSP only:<%= link(action:'list',controller:'book') { 'Book List' }%>
Results in:<a href="/shop/book/list">Book List</a>
Description
Attributes
action
(optional) - the name of the action to use in the link, if not specified the default action will be linked
controller
(optional) - the name of the controller to use in the link, if not specified the current controller will be linked
id
(optional) - the id to use in the link
params
(optional) - a map containing request parameters
url
(optional) - a map containing the action, controller, id etc.
absolute
(optional) - If set to "true" will prefix the link target address with the value of the grails.serverURL property from Config, or http://localhost:<port> if no value in Config and not running in production.
base
(optional) - Sets the prefix to be added to the link target address, typically an absolute server URL. This overrides the behaviour of the absolute
property, if both are specified.
Source
Show Source
def link = { attrs, body ->
def writer = out
writer << '<a href="'
// create the link
if(request['flowExecutionKey']) {
if(!attrs.params) attrs.params = [:]
attrs.params."_flowExecutionKey" = request['flowExecutionKey']
} writer << createLink(attrs).encodeAsHTML()
writer << '"'
// process remaining attributes
attrs.each { k,v ->
writer << " $k=\"$v\""
}
writer << '>'
// output the body
writer << body()
// close tag
writer << '</a>'
}