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I'm building my first shopping cart type app, using the webmonkey
tutorial
(http://hotwired.lycos.com/webmonkey/99/49/index4a.html?tw=programming
), and have a question about the code below. My question is, doesn't
storing the items in the cart keyed to the name lead to a problem if
items have the same name? Wouldn't using an ID, which is presumably
unique be better? Or am I misunderstanding the way structures work?:
<cfscript>
if (not(isdefined("session.cart"))) {session.cart = structnew(); }
// The item structure we are going to use to store the items in
the cart
// is going to have four parts...
// 1. The item id
// 2. The item name
// 3. The price per unit
// 4. The quantity
tempvalue =
listtoarray('#attributes.id#,#attributes.name#,#attributes.price#,#att
ributes.quantity#');
// if the item is not yet in the cart, simply add it to the cart
if (not(structKeyExists(session.cart, attributes.name))) {
StructInsert(session.cart,attributes.name,tempvalue);
}
// if the item is already in the cart, update the item quantity
else {
tempvalue[4]=session.cart[attributes.name][4]+attributes.quantity;
StructUpdate(session.cart,attributes.name,tempvalue);
}
</cfscript>
c
- --
Chris Lott
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