Sign Up ›

Browse by Topic
ShowAll Questionssorted byDate Posted
+ Start a Discussion
RDM1961RDM1961 

Trigger to prevent insert of child record based on field on parent.

Trying to create a trigger to prevent new child records being inserted if the field Event Status on it's parent is one of three values. Starting with just one of the values to keep it simple. Here's what I have so far.

 

trigger CSProductBeforeSave on CS_Product__c (before insert) 
{

    for (CS_Product__c q: trigger.new)
    
        IF(q.Customer_Support__c.Event_Status__c == 'Open Complaint') 
        
            {
            q.addError('Cannot add records to PECs with Open Complaints status');
           
           }
}

 

 

ErrorError: Compile Error: Invalid foreign key relationship: CS_Product__c.Customer_Support__c at line 6 column 12

 

CS_Product__c is a child to Customer_Support__c.

 

Any guidance would be appreciated!.

 

Rick

 


Avi646Avi646

Use q.Customer_Support__r.Event_Status__c instead of q.Customer_Support__c.Event_Status__c
RDM1961RDM1961

OK, using __r and the correct field name :-( allowed me to save the trigger. But the code does not prevent the insert of a new child record. The updated codes is below, what am I missing? I should note that the parent field Event Status is a pickilist, do I need to convert to text or....

 

trigger CSProductBeforeSave on CS_Product__c (before insert) 
{

    for (CS_Product__c q: trigger.new)
    
        IF(q.Customer_Support_ID__r.Event_Status__c == 'Open Complaint') 
        
            {
            q.addError('Cannot add records to PECs with Open Complaints status');
           
           }
}

 
Avi646Avi646

can you please change the same to after insert  and check again?

i guess that should solve the issue.
RDM1961RDM1961

Still not preventing a new record. Could it have anything to do with the Event_Status__c field being a picklist?
Avi646Avi646

Can you put a debug statement and let me know the output.

 

trigger CSProductBeforeSave on CS_Product__c (before insert) 
{

    for (CS_Product__c q: trigger.new)
         System.debug('==========='+q.Customer_Support_ID__r.Event_Status__c );
        IF(q.Customer_Support_ID__r.Event_Status__c == 'Open Complaint') 
        
            {
            q.addError('Cannot add records to PECs with Open Complaints status');
           
           }
}

 
RDM1961RDM1961
trigger CSProductBeforeSave on CS_Product__c (after insert) 
{

    for (CS_Product__c q: trigger.new)
         System.debug('==========='+q.Customer_Support_ID__r.Event_Status__c );
        IF(q.Customer_Support_ID__r.Event_Status__c == 'Open Complaint') 
        
            {
            q.addError('Cannot add records to PECs with Open Complaints status');
           
           }
}

 

When I add the system debug line I'm not able to save the trigger. I get an error : Compilation Error: Variable does not exist:q.Customer_Support_ID__r.Event_Status__c at line 6 column 12. Did I miss something?

 


Avi646Avi646
trigger CSProductBeforeSave on CS_Product__c (after insert) 
{

    for (CS_Product__c q: trigger.new){
         System.debug('==========='+q.Customer_Support_ID__r.Event_Status__c );
        IF(q.Customer_Support_ID__r.Event_Status__c == 'Open Complaint') 
        
            {
            q.addError('Cannot add records to PECs with Open Complaints status');
           
           }
     }
}

 Sorry i missed brackets after the for loop.
SwarnasankhaSwarnasankha

Hi RDM1961,

 

I saw your requirement and it does not need a trigger as it can be achived using a simple Validation Rule. Write the following Validation Rule on the CS_Product__c object:

 

AND(ISNEW(), TEXT(Customer_Support__r.Event_Status__c) = "Open Complaint")

 

The Validation Rule when run only when you are trying to create a new CS_Product__c record.

 

As far as your trigger not working is concerned, the reason lies in the fact that in a Trigger you cannot reference a Parent Objects field values without querying it. You will see that the value printed out in the Debug statement will be null

 

Hope this fixes your issue.