course/edit.php

   1 <?PHP // $Id$
   2       // Edit course settings
   3
   4         require_once("../config.php");
   5         require_once("lib.php");
   6
   7     optional_variable($id, 0);   // course id
   8
   9     require_login();
  10
  11     if ($id) {
  12         if (! $course = get_record("course", "id", $id)) {
  13             error("Course ID was incorrect");
  14         }
  15
  16         if (!isteacher($course->id)) {
  17             error("Only teachers can edit the course!");
  18         }
  19     } else {  // Admin is creating a new course
  20
  21         if (!iscreator()) {
  22             error("Only administrators and teachers can use this page");
  23         }
  24
  25         $course = NULL;
  26     }
  27
  28     if (! $site = get_site()) {
  29         redirect("$CFG->wwwroot/$CFG->admin/index.php");
  30     }
  31
  32
  33
  34
  35 /// If data submitted, then process and store.
  36
  37         if ($form = data_submitted()) {
  38
  39         $form->startdate = make_timestamp($form->startyear, $form->startmonth, $form->startday);
  40
  41         validate_form($course, $form, $err);
  42
  43         if (count($err) == 0) {
  44
  45             $form->timemodified = time();
  46
  47             if (!empty($course)) {
  48                 if (update_record("course", $form)) {
  49                     add_to_log($course->id, "course", "update", "edit.php?id=$id", "");
  50                             redirect("view.php?id=$course->id", get_string("changessaved"));
  51                 } else {
  52                     error("Serious Error! Could not update the course record! (id = $form->id)");
  53                 }
  54             } else {
  55                 $form->timecreated = time();
  56
  57                 if ($newcourseid = insert_record("course", $form)) {  // Set up new course
  58                     $section = NULL;
  59                     $section->course = $newcourseid;   // Create a default section.
  60                     $section->section = 0;
  61                     $section->id = insert_record("course_sections", $section);
  62
  63                     add_to_log($newcourseid, "course", "new", "view.php?id=$newcourseid", "");
  64
  65                     if (isadmin()) { // Redirect admin to add teachers
  66                         redirect("../$CFG->admin/teacher.php?id=$newcourseid", get_string("changessaved"));
  67
  68                     } else {         // Add current teacher and send to course
  69
  70                         $newteacher = NULL;
  71                         $newteacher->userid = $USER->id;
  72                         $newteacher->course = $newcourseid;
  73                         $newteacher->authority = 1;   // First teacher is the main teacher
  74
  75                         if (!$newteacher->id = insert_record("user_teachers", $newteacher)) {
  76                             error("Could not add you to this new course!");
  77                         }
  78
  79                         $USER->teacher[$newcourseid] = true;
  80
  81                         redirect("view.php?id=$newcourseid", get_string("changessaved"));
  82                     }
  83
  84                 } else {
  85                     error("Serious Error! Could not create the new course!");
  86                 }
  87             }
  88                     die;
  89         } else {
  90             foreach ($err as $key => $value) {
  91                 $focus = "form.$key";
  92             }
  93
  94         }
  95         }
  96
  97 /// Otherwise fill and print the form.
  98
  99     if (empty($form)) {
 100         if (!empty($course)) {
 101             $form = $course;
 102         } else {
 103             $form->startdate = time() + 3600 * 24;
 104             $form->fullname = get_string("defaultcoursefullname");
 105             $form->shortname = get_string("defaultcourseshortname");
 106             $form->teacher = get_string("defaultcourseteacher");
 107             $form->teachers = get_string("defaultcourseteachers");
 108             $form->student = get_string("defaultcoursestudent");
 109             $form->students = get_string("defaultcoursestudents");
 110             $form->summary = get_string("defaultcoursesummary");
 111             $form->format = "weeks";
 112             $form->password = "";
 113             $form->guest = 0;
 114             $form->numsections = 10;
 115             $form->newsitems = 5;
 116             $form->showrecent = 1;
 117             $form->category = 1;
 118             $form->id = "";
 119         }
 120     }
 121
 122     if (empty($focus)) {
 123         $focus = "";
 124     }
 125
 126     $form->categories = get_records_select_menu("course_categories", "", "name", "id,name");
 127
 128     $form->courseformats = array (
 129              "weeks"  => get_string("formatweeks"),
 130              "social" => get_string("formatsocial"),
 131              "topics" => get_string("formattopics")
 132     );
 133
 134     $streditcoursesettings = get_string("editcoursesettings");
 135     $straddnewcourse = get_string("addnewcourse");
 136     $stradministration = get_string("administration");
 137
 138     if (!empty($course)) {
 139             print_header($streditcoursesettings, "$course->fullname",
 140                      "<A HREF=\"$CFG->wwwroot/course/view.php?id=$course->id\">$course->shortname</A>
 141                       -> $streditcoursesettings", $focus);
 142     } else {
 143         print_header("$site->shortname: $straddnewcourse", "$site->fullname",
 144                      "<A HREF=\"../$CFG->admin/index.php\">$stradministration</A>
 145                       -> $straddnewcourse", $focus);
 146     }
 147
 148     print_heading($streditcoursesettings);
 149     print_simple_box_start("center", "", "$THEME->cellheading");
 150         include("edit.html");
 151     print_simple_box_end();
 152
 153     print_footer($course);
 154
 155     exit;
 156
 157 /// Functions /////////////////////////////////////////////////////////////////
 158
 159 function validate_form($course, &$form, &$err) {
 160
 161     if (empty($form->fullname))
 162         $err["fullname"] = get_string("missingfullname");
 163
 164     if (empty($form->shortname))
 165         $err["shortname"] = get_string("missingshortname");
 166
 167     if ($foundcourses = get_records("course", "shortname", $form->shortname)) {
 168         if (!empty($course->id)) {
 169             unset($foundcourses[$course->id]);
 170         }
 171         if (!empty($foundcourses)) {
 172             foreach ($foundcourses as $foundcourse) {
 173                 $foundcoursenames[] = $foundcourse->fullname;
 174             }
 175             $foundcoursenamestring = addslashes(implode(',', $foundcoursenames));
 176
 177             $err["shortname"] = get_string("shortnametaken", "", $foundcoursenamestring);
 178         }
 179     }
 180
 181     if (empty($form->summary))
 182         $err["summary"] = get_string("missingsummary");
 183
 184     if (empty($form->teacher))
 185         $err["teacher"] = get_string("missingteacher");
 186
 187     if (empty($form->student))
 188         $err["student"] = get_string("missingstudent");
 189
 190     if (! $form->category)
 191         $err["category"] = get_string("missingcategory");
 192
 193     return;
 194 }
 195
 196
 197 ?>