Grails urlmappings, can one prefix urlmappings?

Question

So for instance, say i have an API on a webapp, and i wish to use the same controllers and actions in the API as the rest of the webapp.

In my urlmappings file i have

"/api/$version/$apiKey/$controller/$acion/$id?"

and i also have a mapping like this:

"/blog/$year/$month/$day/$action" {
   controller = 'blog'
 }

Now the question is, can i somehow prefix the api urlmapping to the blog urlmapping so i can benefit from the $year, $month, $day variables? in such a way that a GET request to the following url would be valid:

GET /api/0.1/bs23mk4m2n4k/blog/2001/01/05/list

or am i forced to do the following request instead?

GET /api/0.1/bs23mk4m2n4k/blog/list?year=2004&month=01&day=05

Need help from an urlmappings GURU or a groovy runtime urlmappings maniuplation WIZARD :)

I want a solution that can reuse existing non-api urmappings, instead of having to redeclare them with the api path as a prefix.

Answer 1

You could have an ApiController strip off the api parameters, then redirect to the blog controller. For example:

"/api/$version/$apiKey/$rest**" {
     controller:'api'
     action:'default'
}


import org.codehaus.groovy.grails.web.util.WebUtils
class ApiController {
    def grailsUrlMappingsHolder

    def default = {
        // validate apiKey, etc
        WebUtils.forwardRequestForUrlMappingInfo(request, response, grailsUrlMappingsHolder.match("/${params.rest}"))
    }
}

The API controller has access to the version and apiKey params, and passes on the rest of the params to be processed by the blog controller's UrlMapping.