Prevent task deletion by anyone other than task creator

Question

I need to create a trigger that will prevent the deletion of a task by anyone other than the creator. I don't know about writing code so I'm hoping someone can help me out with this. It would be an assigned task on a custom object called Closings if that makes any difference. Help!?

trigger NoDeleteonAssignedTask on Task (before delete) {
String ProfileId = UserInfo.getProfileId();String UserID = Userinfo.getUserId(); 
List<Profile> profiles=[select id from Profile where name='PB Administrator'];

if (1!=profiles.size())
{
   // unable to get the profiles - handle error
}
else
{

for (Task a : Trigger.old)      

IF(a.IsAssigned__c==True &&(UserID!=a.CreatedbyID && (profileId!=profiles[0].id )))
{
     Apexpages.addMessage(new Apexpages.message(ApexPages.Severity.ERROR,'deletetaskerror'));

            }
        }
}

Answer 1

You need to write a delete trigger.

• Validations should happen before delete.
• You can get the Id of the running user via UserInfo.getUserId().
• You can compare the CreatedById to the running user Id.
• You can validate in an Apex Trigger using the SObject.addError method.
• I recommend implementing a handler pattern.
• I recommend putting the error message in a Custom Label.
• Make sure you stick to One Trigger Per Object.