MDL-20442 - now you can switch to ignore empty submits

[moodle.git] / user / view.php

<?php

// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Display profile for a particular user
 *
 * @copyright 1999 Martin Dougiamas  http://dougiamas.com
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @package user
 */

require_once("../config.php");
require_once($CFG->dirroot.'/user/profile/lib.php');
require_once($CFG->dirroot.'/tag/lib.php');

$id        = optional_param('id', 0, PARAM_INT);   // user id
$courseid  = optional_param('course', SITEID, PARAM_INT);   // course id (defaults to Site)
$enable    = optional_param('enable', 0, PARAM_BOOL);       // enable email
$disable   = optional_param('disable', 0, PARAM_BOOL);      // disable email

if (empty($id)) {            // See your own profile by default
    require_login();
    $id = $USER->id;
}

if ($courseid == SITEID) {   // Since Moodle 2.0 all site-level profiles are shown by profile.php
    redirect($CFG->wwwroot.'/user/profile.php?id='.$id);  // Immediate redirect
}

$url = new moodle_url('/user/view.php', array('id'=>$id,'course'=>$courseid));
$PAGE->set_url($url);

$user = $DB->get_record('user', array('id'=>$id), '*', MUST_EXIST);
$course = $DB->get_record('course', array('id'=>$courseid), '*', MUST_EXIST);
$currentuser = ($user->id == $USER->id);

$systemcontext = get_context_instance(CONTEXT_SYSTEM);
$coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
$usercontext   = get_context_instance(CONTEXT_USER, $user->id, MUST_EXIST);

// Require login first
if (isguestuser($user)) {
    // can not view profile of guest - thre is nothing to see there
    print_error('invaliduserid');
}

$PAGE->set_context($coursecontext);
$PAGE->set_pagetype('course-view-' . $course->format);
$PAGE->set_other_editing_capability('moodle/course:manageactivities');

$isparent = false;

if (!$currentuser
  and $DB->record_exists('role_assignments', array('userid'=>$USER->id, 'contextid'=>$usercontext->id))
  and has_capability('moodle/user:viewdetails', $usercontext)) {
    // TODO: very ugly hack - do not force "parents" to enrol into course their child is enrolled in,
    //       this way they may access the profile where they get overview of grades and child activity in course,
    //       please note this is just a guess!
    require_login();
    $isparent = true;

} else {
    // normal course
    require_login($course);
    // what to do with users temporary accessing this course? shoudl they see the details?
}


$strpersonalprofile = get_string('personalprofile');
$strparticipants = get_string("participants");
$struser = get_string("user");

$fullname = fullname($user, has_capability('moodle/site:viewfullnames', $coursecontext));

/// Now test the actual capabilities and enrolment in course
if ($currentuser) {
    // me
    if (!is_enrolled($coursecontext) and !is_viewing($coursecontext)) { // Need to have full access to a course to see the rest of own info
        echo $OUTPUT->header();
        echo $OUTPUT->heading(get_string('notenrolled', '', $fullname));
        if (!empty($_SERVER['HTTP_REFERER'])) {
            echo $OUTPUT->continue_button($_SERVER['HTTP_REFERER']);
        }
        echo $OUTPUT->footer();
        die;
    }

} else {
    // somebody else
    $PAGE->set_title("$strpersonalprofile: ");
    $PAGE->set_heading("$strpersonalprofile: ");

    // check course level capabilities
    if (!has_capability('moodle/user:viewdetails', $coursecontext) && // normal enrolled user or mnager
        !has_capability('moodle/user:viewdetails', $usercontext)) {   // usually parent
        print_error('cannotviewprofile');
    }

    if (!is_enrolled($coursecontext, $user->id)) {
        // TODO: the only potential problem is that managers and inspectors might post in forum, but the link
        //       to profile would not work - maybe a new capability - moodle/user:freely_acessile_profile_for_anybody
        //       or test for course:inspect capability
        if (has_capability('moodle/role:assign', $coursecontext)) {
            $PAGE->navbar->add($fullname);
            echo $OUTPUT->header();
            echo $OUTPUT->heading(get_string('notenrolled', '', $fullname));
        } else {
            echo $OUTPUT->header();
            $PAGE->navbar->add($struser);
            echo $OUTPUT->heading(get_string('notenrolledprofile'));
        }
        if (!empty($_SERVER['HTTP_REFERER'])) {
            echo $OUTPUT->continue_button($_SERVER['HTTP_REFERER']);
        }
        echo $OUTPUT->footer();
        exit;
    }

    // If groups are in use and enforced throughout the course, then make sure we can meet in at least one course level group
    if (groups_get_course_groupmode($course) == SEPARATEGROUPS and $course->groupmodeforce
      and !has_capability('moodle/site:accessallgroups', $coursecontext) and !has_capability('moodle/site:accessallgroups', $coursecontext, $user->id)) {
        if (!isloggedin() or isguestuser()) {
            // do not use require_login() here because we might have already used require_login($course)
            redirect(get_login_url());
        }
        $mygroups = array_keys(groups_get_all_groups($course->id, $USER->id, $course->defaultgroupingid, 'g.id, g.name'));
        $usergroups = array_keys(groups_get_all_groups($course->id, $user->id, $course->defaultgroupingid, 'g.id, g.name'));
        if (!array_intersect($mygroups, $usergroups)) {
            print_error("groupnotamember", '', "../course/view.php?id=$course->id");
        }
    }
}


/// We've established they can see the user's name at least, so what about the rest?

$PAGE->navigation->extend_for_user($user);
$PAGE->set_title("$course->fullname: $strpersonalprofile: $fullname");
$PAGE->set_heading($course->fullname);
$PAGE->set_pagelayout('standard');
echo $OUTPUT->header();
echo $OUTPUT->heading(fullname($user));

if ($user->deleted) {
    echo $OUTPUT->heading(get_string('userdeleted'));
    if (!has_capability('moodle/user:update', $coursecontext)) {
        echo $OUTPUT->footer();
        die;
    }
}

/// OK, security out the way, now we are showing the user

add_to_log($course->id, "user", "view", "view.php?id=$user->id&course=$course->id", "$user->id");

$user->lastaccess = false;
if ($lastaccess = $DB->get_record('user_lastaccess', array('userid'=>$user->id, 'courseid'=>$course->id))) {
    $user->lastaccess = $lastaccess->timeaccess;
}


/// Get the hidden field list
if (has_capability('moodle/user:viewhiddendetails', $coursecontext)) {
    $hiddenfields = array();
} else {
    $hiddenfields = array_flip(explode(',', $CFG->hiddenuserfields));
}

if (is_mnet_remote_user($user)) {
    $sql = "
         SELECT DISTINCT h.id, h.name, h.wwwroot,
                a.name as application, a.display_name
           FROM {mnet_host} h, {mnet_application} a
          WHERE h.id = ? AND h.applicationid = a.id
       ORDER BY a.display_name, h.name";

    $remotehost = $DB->get_record_sql($sql, array($user->mnethostid));

    echo '<p class="errorboxcontent">'.get_string('remoteappuser', $remotehost->application)." <br />\n";
    if ($currentuser) {
        if ($remotehost->application =='moodle') {
            echo "Remote {$remotehost->display_name}: <a href=\"{$remotehost->wwwroot}/user/edit.php\">{$remotehost->name}</a> ".get_string('editremoteprofile')." </p>\n";
        } else {
            echo "Remote {$remotehost->display_name}: <a href=\"{$remotehost->wwwroot}/\">{$remotehost->name}</a> ".get_string('gotoyourserver')." </p>\n";
        }
    } else {
        echo "Remote {$remotehost->display_name}: <a href=\"{$remotehost->wwwroot}/\">{$remotehost->name}</a></p>\n";
    }
}

echo '<div class="fullprofilelink">';
echo html_writer::link($CFG->wwwroot.'/user/profile.php?id='.$id, get_string('fullprofile'));
echo '</div>';

echo '<div class="profilepicture">';
echo $OUTPUT->user_picture($user, array('size'=>100));
echo '</div>';

// Print the description
echo '<div class="description">';
if ($user->description && !isset($hiddenfields['description'])) {
    if (!empty($CFG->profilesforenrolledusersonly) && !$DB->record_exists('role_assignments', array('userid'=>$id))) {
        echo get_string('profilenotshown', 'moodle').'<hr />';
    } else {
        $user->description = file_rewrite_pluginfile_urls($user->description, 'pluginfile.php', $usercontext->id, 'user_profile', $id);
        echo format_text($user->description, $user->descriptionformat)."<hr />";
    }
}
echo '</div>';


// Print all the little details in a list

echo '<table class="list" summary="">';

if (! isset($hiddenfields['country']) && $user->country) {
    print_row(get_string('country') . ':', get_string($user->country, 'countries'));
}

if (! isset($hiddenfields['city']) && $user->city) {
    print_row(get_string('city') . ':', $user->city);
}

if (has_capability('moodle/user:viewhiddendetails', $coursecontext)) {
    if ($user->address) {
        print_row(get_string("address").":", "$user->address");
    }
    if ($user->phone1) {
        print_row(get_string("phone").":", "$user->phone1");
    }
    if ($user->phone2) {
        print_row(get_string("phone2").":", "$user->phone2");
    }
}

if ($user->maildisplay == 1
   or ($user->maildisplay == 2 && !isguestuser())
   or has_capability('moodle/course:useremail', $coursecontext)) {

    $emailswitch = '';

    if ($currentuser or has_capability('moodle/course:useremail', $coursecontext)) {   /// Can use the enable/disable email stuff
        if (!empty($enable) and confirm_sesskey()) {     /// Recieved a parameter to enable the email address
            $DB->set_field('user', 'emailstop', 0, array('id'=>$user->id));
            $user->emailstop = 0;
        }
        if (!empty($disable) and confirm_sesskey()) {     /// Recieved a parameter to disable the email address
            $DB->set_field('user', 'emailstop', 1, array('id'=>$user->id));
            $user->emailstop = 1;
        }
    }

    if (has_capability('moodle/course:useremail', $coursecontext)) {   /// Can use the enable/disable email stuff
        if ($user->emailstop) {
            $switchparam = 'enable';
            $switchtitle = get_string('emaildisable');
            $switchclick = get_string('emailenableclick');
            $switchpix   = 't/emailno';
        } else {
            $switchparam = 'disable';
            $switchtitle = get_string('emailenable');
            $switchclick = get_string('emaildisableclick');
            $switchpix   = 't/email';
        }
        $emailswitch = "&nbsp;<a title=\"$switchclick\" ".
                       "href=\"view.php?id=$user->id&amp;course=$course->id&amp;$switchparam=1&amp;sesskey=".sesskey()."\">".
                       "<img src=\"" . $OUTPUT->pix_url("$switchpix") . "\" alt=\"$switchclick\" /></a>";

    } else if ($currentuser) {         /// Can only re-enable an email this way
        if ($user->emailstop) {   // Include link that tells how to re-enable their email
            $switchparam = 'enable';
            $switchtitle = get_string('emaildisable');
            $switchclick = get_string('emailenableclick');

            $emailswitch = "&nbsp;(<a title=\"$switchclick\" ".
                           "href=\"view.php?id=$user->id&amp;course=$course->id&amp;enable=1&amp;sesskey=".sesskey()."\">$switchtitle</a>)";
        }
    }

    print_row(get_string("email").":", obfuscate_mailto($user->email, '', $user->emailstop)."$emailswitch");
}

if ($user->url && !isset($hiddenfields['webpage'])) {
    $url = $user->url;
    if (strpos($user->url, '://') === false) {
        $url = 'http://'. $url;
    }
    print_row(get_string('webpage') .':', '<a href="'.s($url).'">'.s($user->url).'</a>');
}

if ($user->icq && !isset($hiddenfields['icqnumber'])) {
    print_row(get_string('icqnumber').':',"<a href=\"http://web.icq.com/wwp?uin=".urlencode($user->icq)."\">".s($user->icq)." <img src=\"http://web.icq.com/whitepages/online?icq=".urlencode($user->icq)."&amp;img=5\" alt=\"\" /></a>");
}

if ($user->skype && !isset($hiddenfields['skypeid'])) {
    print_row(get_string('skypeid').':','<a href="callto:'.urlencode($user->skype).'">'.s($user->skype).
        ' <img src="http://mystatus.skype.com/smallicon/'.urlencode($user->skype).'" alt="'.get_string('status').'" '.
        ' /></a>');
}
if ($user->yahoo && !isset($hiddenfields['yahooid'])) {
    print_row(get_string('yahooid').':', '<a href="http://edit.yahoo.com/config/send_webmesg?.target='.urlencode($user->yahoo).'&amp;.src=pg">'.s($user->yahoo)." <img src=\"http://opi.yahoo.com/online?u=".urlencode($user->yahoo)."&m=g&t=0\" alt=\"\"></a>");
}
if ($user->aim && !isset($hiddenfields['aimid'])) {
    print_row(get_string('aimid').':', '<a href="aim:goim?screenname='.urlencode($user->aim).'">'.s($user->aim).'</a>');
}
if ($user->msn && !isset($hiddenfields['msnid'])) {
    print_row(get_string('msnid').':', s($user->msn));
}

/// Print the Custom User Fields
profile_display_fields($user->id);


if (!isset($hiddenfields['mycourses'])) {
    if ($mycourses = get_my_courses($user->id, 'visible DESC,sortorder ASC', null, false, 21)) {
        $shown=0;
        $courselisting = '';
        foreach ($mycourses as $mycourse) {
            if ($mycourse->category) {
                if ($mycourse->id != $course->id){
                    $class = '';
                    if ($mycourse->visible == 0) {
                        // get_my_courses will filter courses $USER cannot see
                        // if we get one with visible 0 it just means it's hidden
                        // ... but not from $USER
                        $class = 'class="dimmed"';
                    }
                    $courselisting .= "<a href=\"{$CFG->wwwroot}/user/view.php?id={$user->id}&amp;course={$mycourse->id}\" $class >"
                        . format_string($mycourse->fullname) . "</a>, ";
                }
                else {
                    $courselisting .= format_string($mycourse->fullname) . ", ";
                }
            }
            $shown++;
            if($shown==20) {
                $courselisting.= "...";
                break;
            }
        }
        print_row(get_string('courseprofiles').':', rtrim($courselisting,', '));
    }
}
if (!isset($hiddenfields['firstaccess'])) {
    if ($user->firstaccess) {
        $datestring = userdate($user->firstaccess)."&nbsp; (".format_time(time() - $user->firstaccess).")";
    } else {
        $datestring = get_string("never");
    }
    print_row(get_string("firstaccess").":", $datestring);
}
if (!isset($hiddenfields['lastaccess'])) {
    if ($user->lastaccess) {
        $datestring = userdate($user->lastaccess)."&nbsp; (".format_time(time() - $user->lastaccess).")";
    } else {
        $datestring = get_string("never");
    }
    print_row(get_string("lastaccess").":", $datestring);
}
/// printing roles

if ($rolestring = get_user_roles_in_course($id, $course->id)) {
    print_row(get_string('roles').':', $rolestring);
}

/// Printing groups
if (!isset($hiddenfields['groups'])) {
    if ($course->groupmode != SEPARATEGROUPS or has_capability('moodle/site:accessallgroups', $coursecontext)) {
        if ($usergroups = groups_get_all_groups($course->id, $user->id)) {
            $groupstr = '';
            foreach ($usergroups as $group){
                $groupstr .= ' <a href="'.$CFG->wwwroot.'/user/index.php?id='.$course->id.'&amp;group='.$group->id.'">'.format_string($group->name).'</a>,';
            }
            print_row(get_string("group").":", rtrim($groupstr, ', '));
        }
    }
}
/// End of printing groups

/// Printing Interests
    if( !empty($CFG->usetags)) {
        if ( $interests = tag_get_tags_csv('user', $user->id) ) {
        print_row(get_string('interests') .": ", $interests);
    }
}
/// End of Printing Interests

echo "</table>";

$userauth = get_auth_plugin($user->auth);

$passwordchangeurl = false;
if ($currentuser and $userauth->can_change_password() and !isguestuser() and has_capability('moodle/user:changeownpassword', $systemcontext)) {
    if (!$passwordchangeurl = $userauth->change_password_url()) {
        if (empty($CFG->loginhttps)) {
            $passwordchangeurl = "$CFG->wwwroot/login/change_password.php";
        } else {
            $passwordchangeurl = str_replace('http:', 'https:', $CFG->wwwroot.'/login/change_password.php');
        }
    }
}

// Buttons gone!  TODO: Make sure there's a good way to message someone from the profile pages

if ($CFG->debugdisplay && debugging('', DEBUG_DEVELOPER) && $currentuser) {  // Show user object
    echo '<br /><br /><hr />';
    echo $OUTPUT->heading('DEBUG MODE:  User session variables');
    print_object($USER);
}

echo $OUTPUT->footer();

/// Functions ///////

function print_row($left, $right) {
    echo "\n<tr><td class=\"label c0\">$left</td><td class=\"info c1\">$right</td></tr>\n";
}