Prompt Share - Product Registration Controller

[craigathon]

The Prompt Asked in Einstein Sidebar
Create an apex class named ProductRegistrationController with an @AuraEnabled Apex method called "registerProduct" that collects the following fields as an object class named ProductRegistration:
firstName
lastName
streetAddress
city
state
postalCode
email
phone
serialNumber
modelNumber
purchaseDate

All fields are required. For any fields where validation fails, return an error message listing them out.

After passing validation, map the field to a custom object named Product_Registration__c and insert the record.

The Result

public with sharing class ProductRegistrationController {
    @AuraEnabled
    public static String registerProduct(ProductRegistration productRegistration){
        String errorMessage = '';
        List<String> missingFields = new List<String>();

        if(productRegistration.firstName == null){
            missingFields.add('First Name');
        }

        if(productRegistration.lastName == null){
            missingFields.add('Last Name');
        }

        if(productRegistration.streetAddress == null){
            missingFields.add('Street Address');
        }

        if(productRegistration.city == null){
            missingFields.add('City');
        }

        if(productRegistration.state == null){
            missingFields.add('State');
        }

        if(productRegistration.postalCode == null){
            missingFields.add('Postal Code');
        }

        if(productRegistration.email == null){
            missingFields.add('Email');
        }

        if(productRegistration.phone == null){
            missingFields.add('Phone');
        }

        if(productRegistration.serialNumber == null){
            missingFields.add('Serial Number');
        }

        if(productRegistration.modelNumber == null){
            missingFields.add('Model Number');
        }

        if(productRegistration.purchaseDate == null){
            missingFields.add('Purchase Date');
        }

        if(missingFields.size() > 0){
            errorMessage = String.join(missingFields, ', ');
        }

        if(errorMessage.length() > 0){
            return errorMessage;
        }

        Product_Registration__c productRegistrationRecord = new Product_Registration__c();
        productRegistrationRecord.First_Name__c = productRegistration.firstName;
        productRegistrationRecord.Last_Name__c = productRegistration.lastName;
        productRegistrationRecord.Street_Address__c = productRegistration.streetAddress;
        productRegistrationRecord.City__c = productRegistration.city;
        productRegistrationRecord.State__c = productRegistration.state;
        productRegistrationRecord.Postal_Code__c = productRegistration.postalCode;
        productRegistrationRecord.Email__c = productRegistration.email;
        productRegistrationRecord.Phone__c = productRegistration.phone;
        productRegistrationRecord.Serial_Number__c = productRegistration.serialNumber;
        productRegistrationRecord.Model_Number__c = productRegistration.modelNumber;
        productRegistrationRecord.Purchase_Date__c = productRegistration.purchaseDate;

        try{
            insert productRegistrationRecord;
            return 'Success';
        }catch(Exception ex){
            return 'Error: ' + ex.getMessage();
        }

    }

    public class ProductRegistration{
        @AuraEnabled
        public String firstName {get; set;}

        @AuraEnabled
        public String lastName {get; set;}

        @AuraEnabled
        public String streetAddress {get; set;}

        @AuraEnabled
        public String city {get; set;}

        @AuraEnabled
        public String state {get; set;}

        @AuraEnabled
        public String postalCode {get; set;}

        @AuraEnabled
        public String email {get; set;}

        @AuraEnabled
        public String phone {get; set;}

        @AuraEnabled
        public String serialNumber {get; set;}

        @AuraEnabled
        public String modelNumber {get; set;}

        @AuraEnabled
        public Date purchaseDate {get; set;}
    }
}

Thoughts

• Wow, I was excited to not write repetitive field mapping logic!
• By simply listing the camel case naming of all my class fields, appropriate object field names and validation field labels were automatically generated
• Initially I was listing specific fields that would be required and it was easier to just say all fields are required and then remove validation lines manually as needed.
• It would have been nice if isBlank was used automatically instead of validating with null checks. I could have experimented with specifying this in the prompt and mashing up the result with this one.