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(Quick Reference) # 7.6.3 Variables and Scopes - Reference Documentation Authors: Graeme Rocher, Peter Ledbrook, Marc Palmer, Jeff Brown, Luke Daley, Burt Beckwith, Lari Hotari Version: 2.3.8 ## 7.6.3 Variables and Scopes Filters support all the common properties available to controllers and tag libraries, plus the application context: request - The HttpServletRequest object response - The HttpServletResponse object session - The HttpSession object servletContext - The ServletContext object flash - The flash object params - The request parameters object actionName - The action name that is being dispatched to controllerName - The controller name that is being dispatched to grailsApplication - The Grails application currently running applicationContext - The ApplicationContext object However, filters only support a subset of the methods available to controllers and tag libraries. These include: redirect - For redirects to other controllers and actions render - For rendering custom responses | Quick Reference (hide)