I am developing a grails application which uses lot of ajax.If the request is ajax call then it should give response(this part is working), however if I type in the URL in the browser it should take me to the home/index page instead of the requested page.Below is the sample gsp code for ajax call.
<g:remoteFunction action="list" controller="todo" update="todo-ajax">
<div id ="todo-ajax">
//ajax call rendered in this area
</div>
if we type http://localhost:8080/Dash/todo/list in the browser URL bar, the controller should redirect to http://localhost:8080/Dash/auth/index
How to validate this in controller.
It's quite a common practice to add this dynamic method in your BootStrap.init closure:
HttpServletRequest.metaClass.isXhr = {->
'XMLHttpRequest' == delegate.getHeader('X-Requested-With')
}
this allows you to test if the current request is an ajax call by doing:
if(request.xhr) { ... }
The simplest solution is to add something like this to your todo action:
if(!request.xhr) {
redirect(controller: 'auth', action: 'index')
return false
}
You could also use filters/interceptors. I've built a solution where I annotated all actions that are ajax-only with a custom annotation, and then validated this in a filter.
Full example of grails-app/conf/BootStrap.groovy:
import javax.servlet.http.HttpServletRequest
class BootStrap {
def init = { servletContext ->
HttpServletRequest.metaClass.isXhr = {->
'XMLHttpRequest' == delegate.getHeader('X-Requested-With')
}
}
def destroy = {
}
}