course/importstudents.php

   1 <?php //  $Id$
   2 // script to assign students to a meta course by selecting which courses the meta course comprises.
   3 // this is basically a hack of student.php that uses courses instead.
   4
   5     require_once("../config.php");
   6     require_once("lib.php");
   7
   8     define("MAX_COURSES_PER_PAGE", 1000);
   9
  10     $id             = required_param('id',PARAM_INT); // course id
  11     $add            = optional_param('add', 0, PARAM_BOOL);
  12     $remove         = optional_param('remove', 0, PARAM_BOOL);
  13     $showall        = optional_param('showall', 0, PARAM_BOOL);
  14     $searchtext     = optional_param('searchtext', '', PARAM_RAW); // search string
  15     $previoussearch = optional_param('previoussearch', 0, PARAM_BOOL);
  16     $previoussearch = ($searchtext != '') or ($previoussearch) ? 1:0;
  17
  18     if (! $site = get_site()) {
  19         redirect("$CFG->wwwroot/$CFG->admin/index.php");
  20     }
  21
  22     if (! $course = get_record("course", "id", $id)) {
  23         error("Course ID was incorrect (can't find it)");
  24     }
  25
  26     require_login($course->id);
  27     $context = get_context_instance(CONTEXT_COURSE, $course->id);
  28     require_capability('moodle/course:managemetacourse', $context);
  29
  30     if (!$course->metacourse) {
  31         redirect("$CFG->wwwroot/course/view.php?id=$course->id");
  32     }
  33
  34     $strassigncourses = get_string('metaassigncourses');
  35     $stralreadycourses = get_string('metaalreadycourses');
  36     $strnoalreadycourses = get_string('metanoalreadycourses');
  37     $strpotentialcourses = get_string('metapotentialcourses');
  38     $strnopotentialcourses = get_string('metanopotentialcourses');
  39     $straddcourses = get_string('metaaddcourse');
  40     $strremovecourse = get_string('metaremovecourse');
  41     $strsearch        = get_string("search");
  42     $strsearchresults  = get_string("searchresults");
  43     $strcourses   = get_string("courses");
  44     $strshowall = get_string("showall");
  45
  46     print_header("$course->shortname: $strassigncourses",
  47                  $site->fullname,
  48                  "<a href=\"view.php?id=$course->id\">$course->shortname</a> -> $strassigncourses",
  49                  "searchtext");
  50
  51
  52 /// Print a help notice about the need to use this page
  53
  54     print_heading(get_string('childcourses'));
  55
  56     if (!$frm = data_submitted()) {
  57         $note = get_string("importmetacoursenote");
  58         print_simple_box($note, "center", "50%");
  59
  60 /// A form was submitted so process the input
  61
  62     } else {
  63         if ($add and !empty($frm->addselect) and confirm_sesskey()) {
  64             $timestart = $timeend = 0;
  65             foreach ($frm->addselect as $addcourse) {
  66                 $addcourse = clean_param($addcourse, PARAM_INT);
  67                 set_time_limit(180);
  68                 if (!add_to_metacourse($course->id,$addcourse)) {
  69                     error("Could not add the selected course to this meta course!");
  70                 }
  71             }
  72         } else if ($remove and !empty($frm->removeselect) and confirm_sesskey()) {
  73             foreach ($frm->removeselect as $removecourse) {
  74                 set_time_limit(180);
  75                 $removecourse = clean_param($removecourse, PARAM_INT);
  76                 if (! remove_from_metacourse($course->id,$removecourse)) {
  77                     error("Could not remove the selected course from this meta course!");
  78                 }
  79             }
  80         } else if ($showall and confirm_sesskey()) {
  81             $searchtext = '';
  82             $previoussearch = 0;
  83         }
  84     }
  85
  86
  87 /// Get all existing students and teachers for this course.
  88     if(! $alreadycourses = get_courses_in_metacourse($course->id)) {
  89         $alreadycourses = array();
  90     }
  91
  92     $numcourses = 0;
  93
  94
  95 /// Get search results excluding any users already in this course
  96     if (($searchtext != '') and $previoussearch and confirm_sesskey()) {
  97         if ($searchcourses = get_courses_search(explode(" ",$searchtext),'fullname ASC',0,99999,$numcourses)) {
  98             foreach ($searchcourses as $tmp) {
  99                 if (array_key_exists($tmp->id,$alreadycourses)) {
 100                     unset($searchcourses[$tmp->id]);
 101                 }
 102                 if (!empty($tmp->metacourse)) {
 103                     unset($searchcourses[$tmp->id]);
 104                 }
 105             }
 106             if (array_key_exists($course->id,$searchcourses)) {
 107                 unset($searchcourses[$course->id]);
 108             }
 109             $numcourses = count($searchcourses);
 110         }
 111     }
 112
 113 /// If no search results then get potential students for this course excluding users already in course
 114     if (empty($searchcourses)) {
 115         $numcourses = count_courses_notin_metacourse($course->id);
 116
 117         if ($numcourses > 0 and $numcourses <= MAX_COURSES_PER_PAGE) {
 118             $courses = get_courses_notin_metacourse($course->id);
 119         } else {
 120             $courses = array();
 121         }
 122     }
 123
 124     print_simple_box_start("center");
 125
 126     include('importstudents.html');
 127
 128     print_simple_box_end();
 129
 130     print_footer();
 131
 132 ?>