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The CFAPPLICATION tag and Session variables.. by: John Bartlett

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In order to use session variables, first you have to instruct the Cold Fusion server that you wish to use them.

<cfapplication name="PickSomeUniqueName"
               ClientManagement="No"
               SessionManagement="Yes"
               SessionTimeout="#CreateTimeSpan(0,0,30,0)#"
               SetClientCookies="Yes">

Once you set the CFAPPLICATION tag, simply prefix any variables that you want to be access across multiple pages with "session.". For example, once you set the variable "session.userid", all of your pages can use it.

Keep in mind that you'll have to code in some sort of check to see if the session variables have expired. You can either define them with a default value or if the session variable doesn't exist, redirect them to your login page.

<!--- Check to see if the session variable exists, if not set it. --->
<CFPARAM name="session.IsLoggedIn" default="N">


<!--- Check to see if the session variable exists, 
      if not redirect them to the login page --->
<CFIF IsDefined("session.IsLoggedIn") EQUAL "No">
  <CFLOCATION URL="/login.cfm">
</CFIF>

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