CiviCRM Community Forums (archive)

I'm a beginner and hacker in CiviCRM development and want to create a Extension module to manipulate the permissions. I'm still in the phase where I study and experiment. Following instructions I have made an empty module with civix and was able to install / enable it.

To study the hook aclWhereClause a created the

function permissions_civicrm_aclWhereClause( $type, &$tables, &$whereTables, &$contactID, &$where ) {
 $args=func_get_args();
 CRM_Core_Error::debug('aclWhereClause_arguments', $args,false,true );
}
I don't see displayed the promised debug messages. Questions:

• When would this hook normally be called? It seems not to be called at all. Is it called when logged in as main administrator?
• What would be the (better) way to study hooks like this in general? I want to know what is in the arguments while using the CRM.
• Generally, what would be your advice when your read this?

Thank you!