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GordymanLG2 Getting Current User IP Address from within a Trigger
Is it possible to get the current user's IP address from within a trigger?
Here is a snippet from a trigger I wrote to test the use of the ApexPages method (discussed in another posting thread).
trigger SetUserIPAddress on Case (before insert) {
PageReference pageRef = ApexPages.currentPage();
Map<String,String> MapHeader = new Map<String,String>(pageRef.getheaders());
When I create a new Case invoking this trigger, I get a null page reference error as follows:
Apex trigger SetUserIPAddress caused an unexpected exception, contact your administrator: SetUserIPAddress: execution of BeforeInsert caused by: System.NullPointerException: Attempt to de-reference a null object: Trigger.SetUserIPAddress: line 4, column 59
Can I only access this method from within a class controller and not from within a trigger? nce I figure out how to get the URL header data into the map, I am good to go on extracing the correct IP address from the values in the Map. Any help would be appreciated.
GordymanLG
Hey
Unfortunately triggers are not aware of Visualforce pages, they seem to operate a lot closer to the database (an educated guess really). What this means is that the system methods available for visualforce pages aren't going to do very much at a trigger level.
Wes
All Answers
Hey
Unfortunately triggers are not aware of Visualforce pages, they seem to operate a lot closer to the database (an educated guess really). What this means is that the system methods available for visualforce pages aren't going to do very much at a trigger level.
Wes
That seems to be true.
I've figured out how to do this within a controller, which is invoked by overriding the Case View with a VF page. But this removes in-line editing functionality from the standard Case View page. So that is not an option.
Does anyone know of a mechanism for invoking a controller without doing so with a VF page? I hope this isn't a stupid question.
Mike Gordon
aka GordymanLG2
You can certainly instantiated the controller, as you would with any other class. If it's an extension (and I think yours is) you could try the ffg:
I'm not sure if you can instantiated the standard controller from the trigger. You other option would be to more the functionality into another class that isn't a controller, and use this utility class in the controller and the trigger.
Wes