> -----Original Message----- > From: Will Tomlinson [mailto:[EMAIL PROTECTED] > Sent: Sunday, March 27, 2005 5:53 PM > To: CF-Talk > Subject: Re: client variable: simple or complex? > > >> In Ben Forta's study guide, on page 100, he says "CLIENT > >> variables can store only simple data (like numbers and > >> strings), not complex data (like arrays, structures, and queries). > > > >This is correct. Client variables are stored in places that can only > accept > >character data > > BUT there's a way around this limitation. Jeff Peters' book; Lists Arrays > and Structures, pages 137-142 > > You convert structures to strings (xml data set) by serializing them using > CFWDDX. Good example is a shopping cart. > > <cfwddx action="CFML2WDDX" input="#variables.cart#" output="client.cart"> > > Then deserialize it with action="WDDX2CFML". > > Cool for saving complex data in Client scope.
Just to caveat your caveat one thing to be aware of with this is that the client-storage mechanism is set at the server-side, not programmatically. Unfortunately this means that depending the server configuration you may have size limits as well. For example even small data structures can make big WDDX packets: most of which are too big for cookies and some of which are too big the registry. Of course cookies and the registry are both the red-headed step children of client storage, but some people still use them. ;^) If you store your client information in a DB then the WDDX method works a treat (but you should still plan for performance testing as the conversion can be expensive if done too often). Jim Davis ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Logware (www.logware.us): a new and convenient web-based time tracking application. Start tracking and documenting hours spent on a project or with a client with Logware today. Try it for free with a 15 day trial account. http://www.houseoffusion.com/banners/view.cfm?bannerid=67 Message: http://www.houseoffusion.com/lists.cfm/link=i:4:200168 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
