I am trying to update quantity field in customer_product__c, but no luck - its updating in client level but not in server


/*method to update quantity in customer product */
     public void save(){
     List<Customer_Product__c> cList = new List<Customer_Product__c>();
     for(proWrpr csp: cusProWrprList){
        if(csp.cu.Quantity__c !=NULL ){
        if(csp.cu.Quantity__c != cusMap.get(csp.cu.Product_Code__c).Quantity__c){
         cusMap.get(csp.cu.Product_Code__c).Quantity__c= csp.cu.Quantity__c;
          system.debug('cusMap.get(csp.cu.Product_Code__c).Quantity__c#####' + cusMap.get(csp.cu.Product_Code__c).Quantity__c);
           system.debug('cList#####' + cList.size());
       update cList;
     }catch(Exception e){

VF Page:

<apex:commandButton value="Save" action="{!save}"  id="saveId" style="display:none"/>

enter image description here

  • 1
    Never use an empty catch block. You are just hiding the error from yourself. – Adrian Larson Jun 6 '17 at 17:59

To update a record you need to have Id.

cList doesn't have Id.

So, use the following logic in your loop and update the records.

List<Customer_Product__c> cList = new List<Customer_Product__c>();

//put this inside for loop
Customer_Product__c obj = new Customer_Product__c(Id=...., Quantity__c = ...);

//make an update outside for loop
update cList;
  • Are you sure there's no ID? We don't have enough code to verify this either way. It could be some random DML error. We can't tell because there's a try-catch block swallowing up any errors. – sfdcfox Jun 6 '17 at 18:04
  • Inside save method cList is declared and I dont see any code other than cList.add(cusMap.get(csp.cu.Product_Code__c)); and update cList – Santanu Boral Jun 6 '17 at 19:30

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