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user/index: Fetch participants' contexts with the search

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With this patch, we fetch participants contexts in the main search
query. This cuts 1DBq per participant for the display.

Might fix MDL-11222 'global teacher viewing participants issues' where
we are getting OOM'd with many users.
This commit is contained in:
martinlanghoff 2007-09-19 07:55:00 +00:00
parent 45ea1afb16
commit b6ac3623ce
1 changed files with 22 additions and 5 deletions
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27
user/index.php
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@ -321,12 +321,23 @@
} else {
$selectrole = " ";
}
$select = 'SELECT u.id, u.username, u.firstname, u.lastname, u.email, u.city, u.country, u.picture, u.lang, u.timezone, u.emailstop, u.maildisplay, u.imagealt, COALESCE(ul.timeaccess, 0) AS lastaccess, r.hidden '; // s.lastaccess
$select = 'SELECT u.id, u.username, u.firstname, u.lastname,
u.email, u.city, u.country, u.picture,
u.lang, u.timezone, u.emailstop, u.maildisplay, u.imagealt,
COALESCE(ul.timeaccess, 0) AS lastaccess,
r.hidden,
ctx.id AS ctxid, ctx.path AS ctxpath,
ctx.depth AS ctxdepth, ctx.contextlevel AS ctxlevel ';
$select .= $course->enrolperiod?', r.timeend ':'';
$from = "FROM {$CFG->prefix}user u INNER JOIN
{$CFG->prefix}role_assignments r on u.id=r.userid LEFT OUTER JOIN
{$CFG->prefix}user_lastaccess ul on (r.userid=ul.userid and ul.courseid = $course->id)";
$from = "FROM {$CFG->prefix}user u
JOIN {$CFG->prefix}context ctx
ON (u.id=ctx.instanceid AND ctx.contextlevel = ".CONTEXT_USER.")
JOIN {$CFG->prefix}role_assignments r
ON u.id=r.userid
LEFT OUTER JOIN {$CFG->prefix}user_lastaccess ul
ON (r.userid=ul.userid and ul.courseid = $course->id) ";
$hiddensql = has_capability('moodle/role:viewhiddenassigns', $context)? '':' AND r.hidden = 0 ';
@ -505,6 +516,7 @@
if ($matchcount > 0) {
foreach ($userlist as $user) {
$user = make_context_subobj($user);
print_user($user, $course, $bulkoperations);
}
@ -520,6 +532,7 @@
if (!empty($userlist)) {
foreach ($userlist as $user) {
$user = make_context_subobj($user);
if ($user->hidden) {
// if the assignment is hidden, display icon
$hidden = "<img src=\"{$CFG->pixpath}/t/hide.gif\" alt=\"".get_string('hiddenassign')."\" class=\"hide-show-image\"/>";
@ -545,7 +558,11 @@
}
}
$usercontext = get_context_instance(CONTEXT_USER, $user->id);
if (!isset($user->context)) {
$usercontext = get_context_instance(CONTEXT_USER, $user->id);
} else {
$usercontext = $user->context;
}
if ($piclink = ($USER->id == $user->id || has_capability('moodle/user:viewdetails', $context) ||has_capability('moodle/user:viewdetails', $context))) {
$profilelink = '<strong><a href="'.$CFG->wwwroot.'/user/view.php?id='.$user->id.'&amp;course='.$course->id.'">'.fullname($user).'</a></strong>';