Drupal 7 Module Development

Chapter 9
// Check the permission.
$access = user_access('assign role access as authenticated user',
$account);
}
// Get the defined role id for 'authenticated user'.
$rid = DRUPAL_AUTHENTICATED_RID;
// Now add the role.
if ($access) {
$grants['role_access'][] = array(
'realm' => 'role_access',
'gid' => $rid,
'grant_view' => 1,
'grant_update' => 1,
'grant_delete' => 1,
'priority' => 0,
);
}
// Or take it away.
else {
foreach ($grants as $key => $grant) {
if ($grant['realm'] != 'role_access') {
continue;
}
if ($grant['gid'] == $rid) {
unset($grants[$key]);
}
}
}
When this code runs, our $grants will be modified as needed, and the records sent
to the {node_access} table will reflect our new permissions. Another var_dump()
looks like so:
array(1) {
[1]=>
array(6) {
["realm"]=> string(11) "role_access"
["gid"]=> int(5)
["grant_view"]=> int(1)
["grant_update"]=> int(1)
["grant_delete"]=> int(1)
["priority"]=> int(0)
}
}
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