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[EP-tech] email notification on a specific metadata field value change
CAUTION: This e-mail originated outside the University of Southampton.
This sounds like a job for a commit trigger.
There is a 'changed' hash - which has the old field values in it (the EPrint object already has the newer values in it).
You can check whether the field you are interested in is a key in the changed hash, and use that as a basis for sending an email.
NB The example below may not be syntactically correct. It's lashed together late at night (for me anyway), but I think you'll get the idea. Happy to answer questions about it in (my) morning!
Cheers,
John
$c->add_dataset_trigger( 'eprint', EPrints::Const::EP_TRIGGER_BEFORE_COMMIT, sub
{
my( %args ) = @_;
my( $repo, $user, $changed ) = @args{qw( repository dataobj changed )};
if( exists $changed->{'the_field_youre_interested_in'} )
{
my $old_val = $changed->{'the_field_youre_interested_in'};
my $new_val = $eprint->get_value( 'the_field_youre_interested_in' );
# generate an email alert
}
}, priority => 73);
From: eprints-tech-bounces at ecs.soton.ac.uk [mailto:eprints-tech-bounces at ecs.soton.ac.uk] On Behalf Of Tomasz Neugebauer via Eprints-tech
Sent: 03 August 2022 22:18
To: eprints-tech at ecs.soton.ac.uk
Subject: [EP-tech] email notification on a specific metadata field value change
CAUTION: This e-mail originated outside the University of Southampton.
Another question from me, I hope I don't get blocked for posting too many!
I would like to add an email notification that would be sent out to the depositor when a specific editor-only metadata field changes in a deposit.
What would be the best/easiest way to get that done?
This method is the only way that comes to mind, but it seems complicated. Would I need to
1. add an item field with a date value,
2. use "automatic fields.pl" to insert a date of when the field changes into it whenver the field that I want monitored changes, and
3. run a batch script nightly to send the notification email to for all those items that have "today's" date in the monitor field
Or could I use a trigger mechanism on this field to send out the email?
Tomasz
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