# Preparations
Put following code as the kDBEventHandler::customProcessing method body.
```
if ( $event->Name == 'OnDelete' && $type == 'before' ) {
trigger_error('OnDelete custom processing', E_USER_NOTICE);
}
if ( $event->Name == 'OnDeleteAll' && $type == 'before' ) {
trigger_error('OnDeleteAll custom processing', E_USER_NOTICE);
}
```
# Testing
# login to the adm. console, ensure that front-end theme "advanced" is default theme
# go to the {nav User Management > Users} section, create some regular user
# select some regular user in the Users grid and press "Login As"
# on front-end click on "My Addresses" link in the left side-box
# in the "My Addresses" section click on "New Address" link, create some address
# in the "My Addresses" press on "Delete" link
# in the adm. console go to the {nav Logs & Reports > E-mail Log} section
# press "Delete All" button in the section toolbar, confirm items deletion, asked in js alert
# go to the {nav Logs & Reports > System Log} section, confirm, that just created records with messages "OnDeleteAll custom processing" and "OnDelete custom processing"