Ben Vishny wrote:
// idle.js
// Adapted from
//
http://www.andrewsellick.com/67/simple-javascript-idle-state-using-//prototype
// 15 min in ms
var idleTime = 900000;
var timeOut = ”;
function init() {
new Ajax.Request('/login/inactivity?do=check',
{asynchronous:true, evalScripts:true});
Event.observe(document.body, ‘mousemove’, resetIdle, true);
Event.observe(document.body, ‘click’, resetIdle, true);
Event.observe(document.body, ‘keypress’, resetIdle, true);
setIdle();
}
function onIdleFunction(){
new Ajax.Request('/login/logout?rsn=inactivity',
{asynchronous:true,
onComplete:function(){document.location.href='/login'}});
}
function resetIdle(){
window.clearTimeout( timeOut );
setIdle();
}
function setIdle(){
timeOut = window.setTimeout( "onIdleFunction()", idleTime );
}
function unloadReport() {
new Ajax.Request('/login/inactivity?do=set', {asynchronous:true});
}
Event.observe(window, ‘load’, init, false);
Event.observe(window, ‘unload’, unloadReport, false);
EDIT: use this updated version of the code
# Goes in login controller
def inactivity
case params[:do]
when "check"
# already done by check_activity before filter
when "set"
session[:inactive_at] = Time.now
end
end
# application-wide before_filter
def check_activity
if session[:inactive_at]
if session[:inactive_at] < 15.minutes.ago
reset_session
flash[:notice] = "Your session has timed out due to inactivity."
redirect_to :controller => :login
else
session[:inactive_at] = nil
end
end
end
The reason I use inactive_at rather than last_active is that the
mouse/keyboard/click activity part would use up too many resources if it
continually let the server know when stuff happened.
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