How to redirect to the last visited page in Grails app?

Question

I am a newbie in Grails and I am struggling with many simple issues.

For instance, I haven't managed to find a proper way to go back to the last visited page when I login/logout from a template view that is displayed on the top layout of the page.

My last attempt at solving this problem was to save the ${params.controller} and ${params.action} in the parameters sent to the logout action and redirect thereafter. Well...even this failed. Here is the gsp snippet:

<g:link controller="user" action="logout" params="[currentController: ${params.controller}, currentAction: ${params.action}]">Logout</g:link>

This last code line throws the following exception:

ERROR errors.GrailsExceptionResolver  - Error evaluating expression [[currentController: ${params.controller}, currentAction: ${params.action}]]

So my questions are:

1 - How can I reload the last visited page after a login/logout action ?

2 - Why do I have an exception from my code above?

Thank You

EDIT : Concerning question #2, it seems that the following code is working:

<g:link controller="user" action="logout" params="[currentController: params.controller, currentAction: params.action]">Logout</g:link>

But I don't really understand the reason...

EDIT2 : I have also found out a solution for redirecting to the last visited page:

redirect(url: request.header('referer'))

But unfortunately when doing this after login, the contents rendered in my page are duplicated. Any idea or any other safe solution?

Answer 1

I'm using this controller-side:

    redirect(uri: request.getHeader('referer') )