asked on

stop duplicate prodIDs being added to to listPrepend

hi all,

i'm using this:
<cfparam name="client.recentlyViewed" default="">
<cfset viewString = url.prodID & "|" & rsgetProduct.product_Name & "|" & request.scndcatName>
<cfset client.recentlyViewed = listPrepend(client.recentlyViewed, viewString)>

to store recently viewed products on my site in the client side cookie.

i then display the recently viewed products to the customer on another page.

the prodID is always unique. how can i stop duplicate prodIDs being added to the 'client' so i downt output dupes?

thanks

ASKER CERTIFIED SOLUTION

_agx_

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Zac123

ASKER

ok thanks let me try this.

>Do any of those values contain contain commas? The list delimiter should never exist in the values you're appending.

its possible they contain commas but unlikely. is this a problem?

Zac123

ASKER

perfecto! worked perfectly thanks

_agx_

its possible they contain commas but unlikely. is this a problem?

Delimiters should never appear in the data or list functions wont' work as you expect. For example ListLen() would tell you this string has 2 elements:

"a|prodName1|catName1,b|prodName2|catName2"

But put a comma in the first product name and it will think it's got 3. So a ListFindNoCase() wouldn't return the right results either ..

"a|prod,Name1|catName1,b|prodName2|catName2"

Zac123

ASKER

hmm ok thanks. thats worth knowing. not sure what i can do about it though as i dont create the prod names i only collect them from a db.

many thanks

_agx_

Use a different list delimiter. Anything not used in the data should work.