Prompt Share - Opportunity Estimated Close Date

[craigathon]

The Prompt Asked in Einstein Sidebar
Create a trigger on the Opportunity object that automatically updates a custom field named Estimated_Close_Date__c. When the Opportunity's StageName is changed to 'Proposal/Price Quote', the Estimated_Close_Date__c should be set to 30 days from the current date.

Expected Code Structure:

1. Trigger named OpportunityTrigger on the Opportunity object.
2. Trigger Handler class named OpportunityTriggerHandler with a method to update the estimated close date.
3. Include comments in code

The Result

/**
* @name: OpportunityTrigger
* {AUTHOR_PLACEHOLDER}
* When the Opportunity's StageName is changed to 'Proposal/Price Quote', the Estimated_Close_Date__c should be set to 30 days from the current date.
*/
trigger OpportunityTrigger on Opportunity (before update) {
    if(Trigger.isBefore && Trigger.isUpdate){
        OpportunityTriggerHandler.updateEstimatedCloseDate(Trigger.new, Trigger.oldMap);
    }
}



/**
* @name: OpportunityTriggerHandler
* {AUTHOR_PLACEHOLDER}
* This class is used to automatically update a custom field named Estimated_Close_Date__c.
*/
public with sharing class OpportunityTriggerHandler {
    /**
    * @name: updateEstimatedCloseDate 
    * {AUTHOR_PLACEHOLDER}
    * @param: newOpportunities List<Opportunity>, oldOpportunities Map<Id, Opportunity>
    * @return: void
    */
    public static void updateEstimatedCloseDate(List<Opportunity> newOpportunities, Map<Id, Opportunity> oldOpportunities) {
        for (Opportunity opp : newOpportunities) {
            // Check if the StageName is changed to 'Proposal/Price Quote'
            if (opp.StageName != oldOpportunities.get(opp.Id).StageName && opp.StageName == 'Proposal/Price Quote') {
                // Set the Estimated_Close_Date__c to 30 days from the current date
                opp.Estimated_Close_Date__c = Date.today().addDays(30);
            }
        }
    }
}

Thoughts

• A few times other versions of this prompt would create an after trigger using DML on the same opportunity which we wouldn't want.
• It was great to see it implement the trigger handler class and naming I asked for.
• After a few tweaks, all instructions were followed and this looks like a good solution in my opinion
• It was helpful to follow the Effective Prompt Writing documentation.