course/modedit.php

   1 <?php // $Id$
   2
   3 //  adds or updates modules in a course using new formslib
   4
   5     require_once("../config.php");
   6     require_once("lib.php");
   7
   8     require_login();
   9
  10     $add           = optional_param('add', '', PARAM_ALPHA);
  11     $update        = optional_param('update', 0, PARAM_INT);
  12     //return to course/view.php if false or mod/modname/view.php if true
  13     $return        = optional_param('return', 0, PARAM_BOOL);
  14     $type          = optional_param('type', '', PARAM_ALPHANUM);
  15
  16     if (!empty($add)) {
  17         $section = required_param('section', PARAM_INT);
  18         $course = required_param('course', PARAM_INT);
  19
  20         if (! $course = get_record("course", "id", $course)) {
  21             error("This course doesn't exist");
  22         }
  23
  24         if (! $module = get_record("modules", "name", $add)) {
  25             error("This module type doesn't exist");
  26         }
  27
  28         $context = get_context_instance(CONTEXT_COURSE, $course->id);
  29         require_capability('moodle/course:manageactivities', $context);
  30
  31         if (!course_allowed_module($course, $module->id)) {
  32             error("This module has been disabled for this particular course");
  33         }
  34
  35         require_login($course->id); // needed to setup proper $COURSE
  36
  37         $form->section    = $section;         // The section number itself
  38         $form->course     = $course->id;
  39         $form->module     = $module->id;
  40         $form->modulename = $module->name;
  41         $form->instance   = "";
  42         $form->coursemodule = "";
  43         $form->add=$add;
  44         $form->return=0;//must be false if this is an add, go back to course view on cancel
  45         if (!empty($type)) {
  46             $form->type = $type;
  47         }
  48
  49         $sectionname = get_section_name($course->format);
  50         $fullmodulename = get_string("modulename", $module->name);
  51
  52         if ($form->section && $course->format != 'site') {
  53             $heading->what = $fullmodulename;
  54             $heading->to   = "$sectionname $form->section";
  55             $pageheading = get_string("addinganewto", "moodle", $heading);
  56         } else {
  57             $pageheading = get_string("addinganew", "moodle", $fullmodulename);
  58         }
  59
  60         $CFG->pagepath = 'mod/'.$module->name;
  61         if (!empty($type)) {
  62             $CFG->pagepath .= '/'.$type;
  63         } else {
  64             $CFG->pagepath .= '/mod';
  65         }
  66
  67     } else if (!empty($update)) {
  68         if (! $cm = get_record("course_modules", "id", $update)) {
  69             error("This course module doesn't exist");
  70         }
  71
  72         if (! $course = get_record("course", "id", $cm->course)) {
  73             error("This course doesn't exist");
  74         }
  75
  76         require_login($course->id); // needed to setup proper $COURSE
  77         $context = get_context_instance(CONTEXT_MODULE, $cm->id);
  78         require_capability('moodle/course:manageactivities', $context);
  79
  80         if (! $module = get_record("modules", "id", $cm->module)) {
  81             error("This module doesn't exist");
  82         }
  83
  84         if (! $form = get_record($module->name, "id", $cm->instance)) {
  85             error("The required instance of this module doesn't exist");
  86         }
  87
  88         if (! $cw = get_record("course_sections", "id", $cm->section)) {
  89             error("This course section doesn't exist");
  90         }
  91
  92
  93         $form->coursemodule = $cm->id;
  94         $form->section      = $cm->section;     // The section ID
  95         $form->cmidnumber   = $cm->idnumber;    // The cm IDnumber
  96         $form->course       = $course->id;
  97         $form->module       = $module->id;
  98         $form->modulename   = $module->name;
  99         $form->instance     = $cm->instance;
 100         $form->return = $return;
 101         $form->update = $update;
 102
 103         $sectionname = get_section_name($course->format);
 104         $fullmodulename = get_string("modulename", $module->name);
 105
 106         if ($form->section && $course->format != 'site') {
 107             $heading->what = $fullmodulename;
 108             $heading->in   = "$sectionname $cw->section";
 109             $pageheading = get_string("updatingain", "moodle", $heading);
 110         } else {
 111             $pageheading = get_string("updatinga", "moodle", $fullmodulename);
 112         }
 113
 114         $navlinksinstancename = array('name' => format_string($form->name,true), 'link' => "$CFG->wwwroot/mod/$module->name/view.php?id=$cm->id", 'type' => 'activityinstance');
 115
 116         $CFG->pagepath = 'mod/'.$module->name;
 117         if (!empty($type)) {
 118             $CFG->pagepath .= '/'.$type;
 119         } else {
 120             $CFG->pagepath .= '/mod';
 121         }
 122     } else {
 123         error('Invalid operation.');
 124     }
 125
 126     $modmoodleform = "$CFG->dirroot/mod/$module->name/mod_form.php";
 127     if (file_exists($modmoodleform)) {
 128         require_once($modmoodleform);
 129
 130     } else {
 131         error('No formslib form description file found for this activity.');
 132     }
 133
 134     $modlib = "$CFG->dirroot/mod/$module->name/lib.php";
 135     if (file_exists($modlib)) {
 136         include_once($modlib);
 137     } else {
 138         error("This module is missing important code! ($modlib)");
 139     }
 140
 141     $mformclassname = 'mod_'.$module->name.'_mod_form';
 142     $cousesection=isset($cw->section)?$cw->section:$section;
 143     $mform=& new $mformclassname($form->instance, $cousesection, ((isset($cm))?$cm:null));
 144     $mform->set_data($form);
 145
 146     if ($mform->is_cancelled()) {
 147         if ($return && isset($cm)){
 148             redirect("$CFG->wwwroot/mod/$module->name/view.php?id=$cm->id");
 149         } else {
 150             redirect("view.php?id=$course->id#section-".$cousesection);
 151         }
 152     } else if ($fromform=$mform->get_data()){
 153         if (empty($fromform->coursemodule)) { //add
 154             if (! $course = get_record("course", "id", $fromform->course)) {
 155                 error("This course doesn't exist");
 156             }
 157             $fromform->instance = '';
 158             $fromform->coursemodule = '';
 159         } else { //update
 160             if (! $cm = get_record("course_modules", "id", $fromform->coursemodule)) {
 161                 error("This course module doesn't exist");
 162             }
 163
 164             if (! $course = get_record("course", "id", $cm->course)) {
 165                 error("This course doesn't exist");
 166             }
 167             $fromform->instance = $cm->instance;
 168             $fromform->coursemodule = $cm->id;
 169         }
 170
 171         require_login($course->id); // needed to setup proper $COURSE
 172
 173         if (!empty($fromform->coursemodule)) {
 174             $context = get_context_instance(CONTEXT_MODULE, $fromform->coursemodule);
 175         } else {
 176             $context = get_context_instance(CONTEXT_COURSE, $course->id);
 177         }
 178         require_capability('moodle/course:manageactivities', $context);
 179
 180         $fromform->course = $course->id;
 181         $fromform->modulename = clean_param($fromform->modulename, PARAM_SAFEDIR);  // For safety
 182
 183         $addinstancefunction    = $fromform->modulename."_add_instance";
 184         $updateinstancefunction = $fromform->modulename."_update_instance";
 185
 186         if (!empty($fromform->update)) {
 187
 188             if (isset($fromform->name)) {
 189                 if (trim($fromform->name) == '') {
 190                     unset($fromform->name);
 191                 }
 192             }
 193
 194             $returnfromfunc = $updateinstancefunction($fromform);
 195             if (!$returnfromfunc) {
 196                 error("Could not update the $fromform->modulename", "view.php?id=$course->id");
 197             }
 198             if (is_string($returnfromfunc)) {
 199                 error($returnfromfunc, "view.php?id=$course->id");
 200             }
 201
 202             if (isset($fromform->visible)) {
 203                 set_coursemodule_visible($fromform->coursemodule, $fromform->visible);
 204             }
 205
 206             if (isset($fromform->groupmode)) {
 207                 set_coursemodule_groupmode($fromform->coursemodule, $fromform->groupmode);
 208             }
 209
 210             // set cm id number
 211             if (isset($fromform->cmidnumber)) {
 212                 set_coursemodule_idnumber($fromform->coursemodule, $fromform->cmidnumber);
 213             }
 214
 215             add_to_log($course->id, "course", "update mod",
 216                        "../mod/$fromform->modulename/view.php?id=$fromform->coursemodule",
 217                        "$fromform->modulename $fromform->instance");
 218             add_to_log($course->id, $fromform->modulename, "update",
 219                        "view.php?id=$fromform->coursemodule",
 220                        "$fromform->instance", $fromform->coursemodule);
 221
 222         } else if (!empty($fromform->add)){
 223
 224             if (!course_allowed_module($course,$fromform->modulename)) {
 225                 error("This module ($fromform->modulename) has been disabled for this particular course");
 226             }
 227
 228             if (!isset($fromform->name) || trim($fromform->name) == '') {
 229                 $fromform->name = get_string("modulename", $fromform->modulename);
 230             }
 231
 232             $returnfromfunc = $addinstancefunction($fromform);
 233             if (!$returnfromfunc) {
 234                 /*if (file_exists($moderr)) {
 235                     $form = $fromform;
 236                     include_once($moderr);
 237                     die;
 238                 }*/
 239                 error("Could not add a new instance of $fromform->modulename", "view.php?id=$course->id");
 240             }
 241             if (is_string($returnfromfunc)) {
 242                 error($returnfromfunc, "view.php?id=$course->id");
 243             }
 244
 245             if (!isset($fromform->groupmode)) { // to deal with pre-1.5 modules
 246                 $fromform->groupmode = $course->groupmode;  /// Default groupmode the same as course
 247             }
 248
 249             $fromform->instance = $returnfromfunc;
 250
 251             // course_modules and course_sections each contain a reference
 252             // to each other, so we have to update one of them twice.
 253
 254             if (! $fromform->coursemodule = add_course_module($fromform) ) {
 255                 error("Could not add a new course module");
 256             }
 257             if (! $sectionid = add_mod_to_section($fromform) ) {
 258                 error("Could not add the new course module to that section");
 259             }
 260
 261             if (! set_field("course_modules", "section", $sectionid, "id", $fromform->coursemodule)) {
 262                 error("Could not update the course module with the correct section");
 263             }
 264
 265             if (!isset($fromform->visible)) {   // We get the section's visible field status
 266                 $fromform->visible = get_field("course_sections","visible","id",$sectionid);
 267             }
 268             // make sure visibility is set correctly (in particular in calendar)
 269             set_coursemodule_visible($fromform->coursemodule, $fromform->visible);
 270
 271             // set cm idnumber
 272             if (isset($fromform->cmidnumber)) {
 273                 set_coursemodule_idnumber($fromform->coursemodule, $fromform->cmidnumber);
 274             }
 275
 276             add_to_log($course->id, "course", "add mod",
 277                        "../mod/$fromform->modulename/view.php?id=$fromform->coursemodule",
 278                        "$fromform->modulename $fromform->instance");
 279             add_to_log($course->id, $fromform->modulename, "add",
 280                        "view.php?id=$fromform->coursemodule",
 281                        "$fromform->instance", $fromform->coursemodule);
 282         } else {
 283             error("Data submitted is invalid.");
 284         }
 285
 286         rebuild_course_cache($course->id);
 287
 288         redirect("$CFG->wwwroot/mod/$module->name/view.php?id=$fromform->coursemodule");
 289         exit;
 290
 291     } else {
 292         if (!empty($cm->id)) {
 293             $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 294         } else {
 295             $context = get_context_instance(CONTEXT_COURSE, $course->id);
 296         }
 297         require_capability('moodle/course:manageactivities', $context);
 298
 299         $streditinga = get_string("editinga", "moodle", $fullmodulename);
 300         $strmodulenameplural = get_string("modulenameplural", $module->name);
 301
 302         $navlinks = array();
 303         $navlinks[] = array('name' => $strmodulenameplural, 'link' => "$CFG->wwwroot/mod/$module->name/index.php?id=$course->id", 'type' => 'activity');
 304         if (isset($navlinksinstancename)) {
 305             $navlinks[] = $navlinksinstancename;
 306         }
 307         $navlinks[] = array('name' => $streditinga, 'link' => '', 'type' => 'title');
 308
 309         $navigation = build_navigation($navlinks);
 310
 311         print_header_simple($streditinga, '', $navigation, $mform->focus(), "", false);
 312
 313         if (!empty($cm->id)) {
 314             $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 315             $currenttab = 'update';
 316             include_once($CFG->dirroot.'/'.$CFG->admin.'/roles/tabs.php');
 317         }
 318         $icon = '<img src="'.$CFG->modpixpath.'/'.$module->name.'/icon.gif" alt=""/>';
 319
 320         print_heading_with_help($pageheading, "mods", $module->name, $icon);
 321         $mform->display();
 322         print_footer($course);
 323     }
 324 ?>