Just a thought but are you calling init() on cart each and every time you
create it eg.,
<cfset variables.cart = createobject("component","cart").init() />
If you miss init() you wont have access to instance scope. The error will
throw on the call to findItem as instance.arritems in that method wont
exist.
Angus
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Sameer Kekade
Sent: Thursday, 11 November 2004 9:32 AM
To: [EMAIL PROTECTED]
Subject: [CFCDev] Shopping cart cfc
Hey All,
Does anyone have a shopping cart cfc that I can startup with. I have
this shopping cart.cfc and it randomly throws an error when I try to
insert an item into my ordercart. It shows an error on this line <cfset
variables.indexItem = findItem(trim(arguments.ean),
trim(arguments.supplier_id))>
Am I doing anything wrong??
<cfcomponent>
<cfproperty name="arrItems" type="array">
<cfproperty name="timestamp" type="date">
<cffunction name="init" access="public" output="false"
returntype="struct" hint="Initialize the object">
<cfscript>
instance = structNew();
instance.arrItems = arrayNew(1);
instance.timestamp = Now();
</cfscript>
<cfreturn this>
</cffunction>
<cffunction name="insertItem" access="public" output="false"
returntype="string">
<cfargument name="supplier_id" type="string">
<cfargument name="ean" type="string">
<cfargument name="qty" type="string">
<cfargument name="price" type="string">
<cfset variables.flgAddRecord = true><!--- default to
true (means add the record into the cart) --->
<cfset variables.indexItem =
findItem(trim(arguments.ean), trim(arguments.supplier_id))>
<cfif variables.indexItem NEQ 0>
<cfset
instance.arrItems[variables.indexItem].qty =
instance.arrItems[variables.indexItem].qty + arguments.qty>
<cfset
instance.arrItems[variables.indexItem].extprice =
instance.arrItems[variables.indexItem].extprice +
(arguments.price*arguments.qty)>
<cfset variables.flgAddRecord = false>
<!--- false (since its been consolidated, do not add the record into the
cart) --->
</cfif>
<!--- The cart array was traversed and the item doesnot
exist in the ordercart hence append the item into the cart --->
<cfif variables.flgAddRecord EQ true>
<cfset Item = structNew()>
<cfset Item.supplier_id =
trim(arguments.supplier_id)>
<cfset Item.ean = trim(arguments.ean)>
<cfset Item.qty = arguments.qty>
<cfset Item.price = arguments.price>
<cfset Item.extprice =
(arguments.price*arguments.qty)>
<cfset temp =
ArrayAppend(instance.arrItems,Item)>
</cfif><!---flgAddRecord EQ true --->
<cfreturn flgAddRecord>
</cffunction>
<cffunction name="get" access="public" output="false"
returntype="array" hint="Returns the current Order Cart.">
<cfif not isDefined("instance")>
<!--- Entity has not been inited yet --->
<cfset this.init()>
</cfif>
<cfreturn Instance.arrItems>
</cffunction>
<cffunction name="findItem" access="public" output="false"
returntype="numeric">
<cfargument name="ean" type="string">
<cfargument name="supplier_id" type="string">
<cfset ii=0>
<cfset arrTemp = instance.arrItems>
<cftry>
<cfscript>
//a variable for looping
//loop through the array, looking for
the value
for(ii = 1; ii LTE arrayLen(arrTemp); ii
= ii + 1){
//if this is the value, return
the index
if(
(compare(arrTemp[ii].ean,arguments.ean) EQ 0) and
(compare(arrTemp[ii].supplier_id,arguments.supplier_id) EQ 0))
return ii;
}
//if we've gotten this far, it means the
value was not found, so return 0
return 0;
</cfscript>
<cfcatch type="any">
<!--- do nothing --->
<cfreturn 0>
</cfcatch>
</cftry>
</cffunction>
<cffunction name="resetCart" access="public" output="false"
returntype="boolean">
<!--- Delete the cart data --->
<cfset temp = ArrayClear(instance.arrItems)>
<cfreturn ArrayIsEmpty(instance.arrItems)>
</cffunction>
</cfcomponent>
Warm Regards,
Sameer S. Kekade.
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