Apex Code Development You need to sign in to do that
Don't have an account?
Air Foxx Simple class to check invoice amounts
I'm still very new to coding so any help would be appreciated. I'm trying to write a simple class that sums the value of invoice amounts if the invoice numbers are the same. Here's the relevant section that throw this list type error:
"Expression must be a list type: Promo_Invoice__c at line 30 column 34"
List<Promo_Invoice__c> invoices = [SELECT Amount__c, External_ID__c, Invoice_Date__c, Invoice_Number__c, ISBN__c, Quantity__c FROM Promo_Invoice__c WHERE Promo_Sales__c = :promoID AND Invoice_Date__c < :PromoStart ORDER BY Invoice_Number__c DESC];
for (Promo_Invoice__c eachinvoice : invoices)
{
if (eachinvoice[InvIndex].Invoice_Number__c = eachinvoice[InvIndex++].Invoice_Number__c)
{
InvTotalAmount = eachinvoice[InvIndex].Amount__c + eachinvoice[InvIndex++].Amount__c;
}
Thanks again for any help.
"Expression must be a list type: Promo_Invoice__c at line 30 column 34"
List<Promo_Invoice__c> invoices = [SELECT Amount__c, External_ID__c, Invoice_Date__c, Invoice_Number__c, ISBN__c, Quantity__c FROM Promo_Invoice__c WHERE Promo_Sales__c = :promoID AND Invoice_Date__c < :PromoStart ORDER BY Invoice_Number__c DESC];
for (Promo_Invoice__c eachinvoice : invoices)
{
if (eachinvoice[InvIndex].Invoice_Number__c = eachinvoice[InvIndex++].Invoice_Number__c)
{
InvTotalAmount = eachinvoice[InvIndex].Amount__c + eachinvoice[InvIndex++].Amount__c;
}
Thanks again for any help.
That variable "eachInvoice" is a single instance - an object. It needs to be referenced with the "."(dot) notation.
Your code tries to access values in that object by index number as if it is an array. If you have to compare and traverse through the list then you have to use the for loop - the one you used over here is known as the for each loop. It shoul look something like this -
for(int i=0; i<invoices.size(); i++){
if((i != invoices.size()-1) && (invoices[i].Invoice_Number__c == invoices[i++].Invoice_Number__c)){ // the first clause is to prevent a list out of //bound exception
InvTotalAmount = invoices[i].Amount__c + invoices[i++].Amount__c;
}
}
Hope this gives you an idea and helps you to solve the problem. If you need more help please post more code along with desired functionality.
Thanks,
Kaustav