L-electron-Rare/moodle
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

changes to how to pull out a list of users (course/module participants)

Browse Source
This commit is contained in:
toyomoyo
2006-08-28 08:42:30 +00:00
parent 7654b2bb08
commit 1648afb278
6 changed files with 73 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/accesslib.php
+50 -4
View File
@@ -1407,7 +1407,7 @@ function fetch_context_capabilities($context) {
* @param int $roleid
* @return array
*/
function role_context_capabilities($roleid, $context) {
function role_context_capabilities($roleid, $context, $cap='') {
global $CFG;
$sitecontext = get_context_instance(CONTEXT_SYSTEM, SITEID);
@@ -1419,14 +1419,19 @@ function role_context_capabilities($roleid, $context) {
$contexts = array_reverse(get_parent_contexts($context));
$contexts = '('.implode(',', $contexts).')';
if ($cap) {
$search = ' AND rc.capability = "'.$cap.'" ';
} else {
$search = '';
}
$SQL = "SELECT rc.* FROM {$CFG->prefix}role_capabilities rc, {$CFG->prefix}context c
where rc.contextid in $contexts
and rc.roleid = $roleid
and rc.contextid = c.id
and rc.contextid = c.id $search
ORDER BY c.aggregatelevel DESC, rc.capability DESC";
$records = get_records_sql($SQL);
$capabilities = array();
// We are traversing via reverse order.
@@ -1790,4 +1795,45 @@ function get_overridable_roles ($context) {
return $options;
}
/**
* who has this capability in this context
* does not handling user level resolving!!!
* i.e 1 person has 2 roles 1 allow, 1 prevent, this will not work properly
* @param $context - object
* @param $capability - string capability
* @param $fields - fields to be pulled
* @param $sort - the sort order
*/
function get_users_by_capability($context, $capability, $fields='distinct u.*', $sort='') {
global $CFG;
// first get all roles with this capability in this context, or above
$possibleroles = get_roles_with_capability($capability, CAP_ALLOW);
$validroleids = array();
foreach ($possibleroles as $prole) {
$caps = role_context_capabilities($prole->id, $context, $capability); // resolved list
if ($caps[$capability] > 0) { // resolved capability > 0
$validroleids[] = $prole->id;
}
}
if ($usercontexts = get_parent_contexts($context)) {
$listofcontexts = '('.implode(',', $usercontexts).')';
} else {
$sitecontext = get_context_instance(CONTEXT_SYSTEM, SITEID);
$listofcontexts = '('.$sitecontext->id.')'; // must be site
}
$roleids = '('.implode(',', $validroleids).')';
$select = ' SELECT '.$fields;
$from = ' FROM '.$CFG->prefix.'user u LEFT JOIN '.$CFG->prefix.'role_assignments ra ON ra.userid = u.id ';
$where = ' WHERE (ra.contextid = '.$context->id.' OR ra.contextid in '.$listofcontexts.') AND u.deleted = 0 AND ra.roleid in '.$roleids.' ';
return get_records_sql($select.$from.$where);
}
?>