Re: Problems when user hit back
This WebDNA talk-list message is from 2000
It keeps the original formatting.
numero = 34538
interpreted = N
texte = Thanks for your help guys. -RodolfoEl 7/11/00 1:56 PM, Sam Lewis sam@samLewis.com escribió:>> Could you explain this a bit, Sam? >> > > Sure. The problem was that when someone hits Reload on the shopping > cart page or Back from the invoice page it can affect the shopping > cart by adding multiple instances of a single sku. So since I am > using the rn=[random] trick to solve browser caching issues anyway I > also use it to solve this problem. > >>> [showif [action]=Add] >>> >>> [text]oldRandom=[orderfile cart=[cart]][header20][/orderfile][/text] > > When someone adds an item to my shopping cart page I check to see if > this request is coming from their cache by comparing the header20 > value to the rn value that is passed to the page. > >>> [hideif [oldRandom]=[rn]] > > So if the oldRandom=rn then this request is not unique and is > probably caused by someone hitting Reload or Back from the invoice > page. > >>> [addlineitem >>> cart=[cart]&db=^Editions.db&sku=[SKU]]quantity=[qty][/addlineitem] >>> [SetHeader cart=[cart]&db=^editions.db]Header20=[rn][/SetHeader] > > If it is unique and rn does not equal oldRandom then I go ahead and > add the line item to the cart and I set header20 to the current rn > value > >>> [/hideif] >>> [/showif] > > Does that make better sense? ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list
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Thanks for your help guys. -RodolfoEl 7/11/00 1:56 PM, Sam Lewis sam@samLewis.com escribió:>> Could you explain this a bit, Sam? >> > > Sure. The problem was that when someone hits Reload on the shopping > cart page or Back from the invoice page it can affect the shopping > cart by adding multiple instances of a single sku. So since I am > using the rn=[random] trick to solve browser caching issues anyway I > also use it to solve this problem. > >>> [showif [action]=Add] >>> >>> [text]oldRandom=[orderfile cart=[cart]][header20][/orderfile][/text] > > When someone adds an item to my shopping cart page I check to see if > this request is coming from their cache by comparing the header20 > value to the rn value that is passed to the page. > >>> [hideif [oldRandom]=[rn]] > > So if the oldRandom=rn then this request is not unique and is > probably caused by someone hitting Reload or Back from the invoice > page. > >>> [addlineitem >>> cart=[cart]&db=^Editions.db&sku=[SKU]]quantity=[qty][/addlineitem] >>> [SetHeader cart=[cart]&db=^editions.db]Header20=[rn][/SetHeader] > > If it is unique and rn does not equal oldRandom then I go ahead and > add the line item to the cart and I set header20 to the current rn > value > >>> [/hideif] >>> [/showif] > > Does that make better sense? ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://search.smithmicro.com/
Rodolfo de la Garza
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