Groovy Server Pages (GSP) 5.0.0

(Quick Reference)

createLink

Purpose

Creates a link that can be used where necessary (for example in an href, JavaScript, Ajax call etc.)

Examples

Example controller for an application called "shop":

class BookController {

    static defaultAction = "list"

    def list() {
        [books: Book.list(params)]
    }

    def show() {
        [book: Book.get(params.id)]
    }
}

Example usages for above controller:

// generates "/shop/book/show/1"
<g:createLink action="show" id="1" />

// generates "/shop/book/show?foo=bar&boo=far"
<g:createLink action="show" params="[foo: 'bar', boo: 'far']"/>

// generates "/shop/book"
<g:createLink controller="book" />

// generates "/shop/book/list"
<g:createLink controller="book" action="list" />

// generates "/shop/book/list"
<g:createLink url="[action:'list',controller:'book']" />

// generates a link tot he book controller in the publishing namespace
<g:createLink controller="book" namespace="publishing"/>

// generates "http://portal.mygreatsite.com/book"
<g:createLink controller="book" absolute="true"/>

// generates "http://admin.mygreatsite.com/book"
<g:createLink controller="book" base="http://admin.mygreatsite.com"/>

// generates "/shop/book/list/1?title=The+Shining&author=Stephen+King"
<g:createLink controller="book" action="list"
              params="[title: 'The Shining', author: 'Stephen King', id: '1']"/>

Example as a method call in GSP:

<a href="${createLink(action: 'list')}">my link</a>

results in:

<a href="/shop/book/list">my link</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
namespace (optional) - the namespace of the controller to use in the link
plugin (optional) - the name of the plugin which provides the controller
id (optional) - The id to use in the link
fragment (optional) - The link fragment (often called anchor tag) to use
mapping (optional) - The named URL mapping to use to rewrite the link
method (optional) - The HTTP method specified in the corresponding URL mapping
params (optional) - A Map of request parameters
url (optional) - A Map containing the action,controller,id etc.
uri (optional) - A string for a relative path in the running app.
relativeUri (optional) - Used to specify a uri relative to the current path.
absolute (optional) - If true will prefix the link target address with the value of the grails.serverURL property from application.groovy, or http://localhost:<port>; if there is no setting in application.groovy 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.
event (optional) - The name of a Webflow event to trigger for the flow associated with the given action. Requires the Webflow plugin.

createLink

Purpose

Examples

Description

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