How to determine which view to render in a controller action

Okay, I have a few different of ideas of how I would achieve this, but thought I would ask here in case someone has a better solution.

I have a SessionsController that has a login view and a widget_login view. I was wondering how to go about determining which view to render in the new actio开发者_如何学JAVAn of SessionsController.

Right now, everything uses the standard login view. I was hoping to be able to render the widget_login view instead if the request is coming from my widget (reviewscontroller) which has a "Sign in" link on it. I don't want to use the referrer to determine this if possible.

Thanks

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Not sure if this is feasible without seeing your code, but how about something like this:

respond_to do |format|
    format.html { render(:action => 'new') }
    format.widget { render(:action => 'widget_login') }
end

Then in your widget link to new.widget.

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at the end of the action code:

render :layout => 'my_layout'

if there was already a render call, modify it adding the :layout parameter.