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> What 'd like to be able to do is have them go down the page, entering
> quantities against the items they want, and then process the order on teh
> one click.
This is the way I normally build my shopping carts. You'll end up doing a
loop of some sort, but I don't like using Form.FieldNames (as someone else
suggested) because, especially with a large form, it adds up to a lot of
wasted processing time.
Here's what I do:
1) When displaying the front end, maintain a list of the item codes that are
on the page. If you are displaying items from a query this is easy: each
ouput iteration do the following:
<INPUT TYPE="hidden" NAME="ItemsOnPage" VALUE="#qryQ.ItemCode#">
Also, you'll need to include a quantity field for each item. You can do
this like so:
<INPUT TYPE="text" NAME="Qty_#qryQ.ItemCode#">
This gives you a quantity field for each item on the form. You can access
the qty of any item simply by appending the Item Code to the string "Qty_".
In other words, Item Code 5 would have a qty field called "Form.Qty_5".
You can set other item-specific params (such as item flags) in this same
way.
<FORM ACTION="action_page.cfm">
<CFOUTPUT QUERY="qryQ">
<!--- hidden control vars --->
<INPUT TYPE="hidden" NAME="ItemsOnPage" VALUE="#qryQ.ItemCode#">
<!--- form fields for user input --->
<INPUT TYPE="text" NAME="Qty_#qryQ.ItemCode#">
</CFOUTPUT>
<INPUT TYPE="submit">
</FORM>
2) When the form submits it will pass along a form field called
"ItemsOnPage" that contains a nicely formatted, comma delimited list of item
codes that the user had access to on the form. You can then do a loop over
that list (thus ensuring you only loop as many times as you absolutely have
to) to access each quantity field.
For example:
<CFLOOP INDEX="thisCode" LIST="#Form.ItemsOnPage#">
<!--- get the qty for this item --->
<CFSET intQty = Evaluate("Form.Qty_" & thisCode)>
<!--- you could get other item-specific params also --->
<!--- run a query here for item details using the value of thisCode.
Certain data,
like prices, should always be pulled from the DB rather than passed
via form
to ensure that people don't hack your cart --->
<!--- once you have all of the data you need, and as long as the user
requested
a non-zero qty, do your insert here --->
</CFLOOP>
Hope that makes some sense. I'm REALLY tired, so I may be overstating the
obvious... I'm also beginning to see things that aren't there<g>. Anyways,
if you need anything clarified just let me know. I've used this approach on
a number of different applications, and it seems to work pretty darn good.
Regards,
Seth Petry-Johnson
Argo Enterprise and Associates
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