A developer Is tasked with ensuring that email addresses entered into the system for Contacts and for a Custom Object called Survey_Response__c do not belong to a list of blacklisted domains. The list of blacklisted domains will be stored In a custom object for ease of maintenance by users. Note that the Survey_Response__c object is populated via a custom visualforce page.
What is the optimal way to implement this?

Question

A developer Is tasked with ensuring that email addresses entered into the system for Contacts and for a Custom Object called Survey_Response__c do not belong to a list of blacklisted domains. The list of blacklisted domains will be stored In a custom object for ease of maintenance by users. Note that the Survey_Response__c object is populated via a custom visualforce page.

What is the optimal way to implement this?

evalson martin laplap · Accepted Answer

Implement the logic in a helper class that is called by an Apex trigger on Contact and from the Custom Visualforce page controller.

evalson martin laplap · Answer

Implement the logic in an Apex trigger on Contact and also implement the logic within the Custom visualforce page controller.

evalson martin laplap · Answer

Implement the logic in the Custom Visualforce page controller and call that method from an Apex trigger on Contact.

evalson martin laplap · Answer

Implement the logic in a Validation Rule on the Contact and a validation Rule on the Survey_Response__c object.

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