8.3.12 Customizing URL Formats

The default URL Mapping mechanism supports camel case names in the URLs. The default URL for accessing an action named addNumbers in a controller named MathHelperController would be something like /mathHelper/addNumbers. Grails allows for the customization of this pattern and provides an implementation which replaces the camel case convention with a hyphenated convention that would support URLs like /math-helper/add-numbers. To enable hyphenated URLs assign a value of "hyphenated" to the grails.web.url.converter property in grails-app/conf/application.groovy.

grails-app/conf/application.groovy

grails.web.url.converter = 'hyphenated'

Arbitrary strategies may be plugged in by providing a class which implements the UrlConverter interface and adding an instance of that class to the Spring application context with the bean name of grails.web.UrlConverter.BEAN_NAME. If Grails finds a bean in the context with that name, it will be used as the default converter and there is no need to assign a value to the grails.web.url.converter config property.

src/main/groovy/com/myapplication/MyUrlConverterImpl.groovy

package com.myapplication
class MyUrlConverterImpl implements grails.web.UrlConverter {
    String toUrlElement(String propertyOrClassName) {
        // return some representation of a property or class name that should be used in URLs...
    }
}

grails-app/conf/spring/resources.groovy

beans = {
    "${grails.web.UrlConverter.BEAN_NAME}"(com.myapplication.MyUrlConverterImpl)
}