/**
* Checks if the supplied array of permissions exist within database
*
* @return array|null
*/
public static function areValid($permissions)
{
if (!is_null($permissions)) {
// Grab any permissions that are in that array
$against = Permission::whereIn('id', $permissions)->get();
// Compare the two counts, if different, some of the ones supplied don't exist
if ($against->count() !== count($permissions)) {
// in which case, supply new array of ones that do exist and were requested
$permissions = array();
foreach ($against as $permission) {
$permissions[] = $permission->id;
}
}
return $permissions;
}
return null;
}
