question/import.php

   1 <?php // $Id$
   2 /**
   3 * Import quiz questions into the given category
   4 *
   5 * @version $Id$
   6 * @author Martin Dougiamas, Howard Miller, and many others.
   7 *         {@link http://moodle.org}
   8 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   9 * @package quiz
  10 */
  11
  12     require_once("../config.php");
  13     require_once( "editlib.php" );
  14     require_once($CFG->dirroot.'/lib/uploadlib.php');
  15
  16     // get parameters
  17     $params = new stdClass;
  18     $params->choosefile = optional_param('choosefile','',PARAM_PATH);
  19     $categoryid = optional_param('category', 0, PARAM_INT);
  20     $catfromfile = optional_param('catfromfile', 0, PARAM_BOOL );
  21     $courseid = optional_param('course', 0, PARAM_INT);
  22     $format = optional_param('format','',PARAM_FILE);
  23     $params->matchgrades = optional_param('matchgrades','',PARAM_ALPHA);
  24
  25     // get display strings
  26     $txt = new stdClass();
  27     $txt->category = get_string('category','quiz');
  28     $txt->choosefile = get_string('choosefile','quiz');
  29     $txt->editingquiz = get_string(isset($SESSION->modform->instance) ? "editingquiz" : "editquestions", "quiz");
  30     $txt->file = get_string('file');
  31     $txt->fileformat = get_string('fileformat','quiz');
  32     $txt->fromfile = get_string('fromfile','quiz');
  33     $txt->importcategory = get_string('importcategory','quiz');
  34     $txt->importerror = get_string('importerror','quiz');
  35     $txt->importfilearea = get_string('importfilearea','quiz');
  36     $txt->importfileupload = get_string('importfileupload','quiz');
  37     $txt->importfromthisfile = get_string('importfromthisfile','quiz');
  38     $txt->importquestions = get_string("importquestions", "quiz");
  39     $txt->matchgrades = get_string('matchgrades','quiz');
  40     $txt->matchgradeserror = get_string('matchgradeserror','quiz');
  41     $txt->matchgradesnearest = get_string('matchgradesnearest','quiz');
  42     $txt->modulename = get_string('modulename','quiz');
  43     $txt->modulenameplural = get_string('modulenameplural','quiz');
  44     $txt->nocategory = get_string('nocategory','quiz');
  45     $txt->onlyteachersimport = get_string('onlyteachersimport','quiz');
  46     $txt->questions = get_string("questions", "quiz");
  47     $txt->quizzes = get_string('modulenameplural', 'quiz');
  48     $txt->upload = get_string('upload');
  49     $txt->uploadproblem = get_string('uploadproblem');
  50     $txt->uploadthisfile = get_string('uploadthisfile');
  51
  52     // matching options
  53     $matchgrades = array();
  54     $matchgrades['error'] = $txt->matchgradeserror;
  55     $matchgrades['nearest'] = $txt->matchgradesnearest;
  56
  57     if ($categoryid) { // update category in session variable
  58         $SESSION->questioncat = $categoryid;
  59     } else { // try to get category from modform
  60         $showcatmenu = true; // will ensure that user can choose category
  61         if (isset($SESSION->questioncat)) {
  62             $categoryid = $SESSION->questioncat;
  63         }
  64     }
  65
  66     if (! $category = get_record("question_categories", "id", $categoryid)) {
  67         // if no valid category was given, use the default category
  68         if ($courseid) {
  69             $category = get_default_question_category($courseid);
  70         } else {
  71             error( $txt->nocategory );
  72         }
  73     }
  74
  75     if (!$courseid) { // need to get the course from the chosen category
  76         $courseid = $category->course;
  77     }
  78
  79     if (! $course = get_record("course", "id", $courseid)) {
  80         error("Invalid course!");
  81     }
  82
  83     require_login($course->id, false);
  84
  85     require_capability('moodle/question:import', get_context_instance(CONTEXT_COURSE, $course->id));
  86
  87     // ensure the files area exists for this course
  88     make_upload_directory( "$course->id" );
  89
  90
  91     //==========
  92     // PAGE HEADER
  93     //==========
  94
  95     if (isset($SESSION->modform->instance) and $quiz = get_record('quiz', 'id', $SESSION->modform->instance)) {
  96         $strupdatemodule = has_capability('moodle/course:manageactivities', get_context_instance(CONTEXT_COURSE, $course->id))
  97             ? update_module_button($SESSION->modform->cmid, $course->id, $txt->modulename)
  98             : "";
  99         print_header_simple($txt->importquestions, '',
 100                  "<a href=\"$CFG->wwwroot/mod/quiz/index.php?id=$course->id\">".$txt->modulenameplural.'</a>'.
 101                  " -> <a href=\"$CFG->wwwroot/mod/quiz/view.php?q=$quiz->id\">".format_string($quiz->name).'</a>'.
 102                  ' -> '.$txt->importquestions,
 103                  "", "", true, $strupdatemodule);
 104         $currenttab = 'edit';
 105         $mode = 'import';
 106         include($CFG->dirroot.'/mod/quiz/tabs.php');
 107     } else {
 108         print_header_simple($txt->importquestions, '', $txt->importquestions);
 109         // print tabs
 110         $currenttab = 'import';
 111         include('tabs.php');
 112     }
 113
 114
 115     // file upload form sumitted
 116     if (!empty($format) and confirm_sesskey() ) {
 117
 118         // file checks out ok
 119         $fileisgood = false;
 120
 121         // work out if this is an uploaded file
 122         // or one from the filesarea.
 123         if (!empty($params->choosefile)) {
 124             $importfile = "{$CFG->dataroot}/{$course->id}/{$params->choosefile}";
 125             if (file_exists($importfile)) {
 126                 $fileisgood = true;
 127             }
 128             else {
 129                 notify($txt->uploadproblem);
 130             }
 131         }
 132         else {
 133             // must be upload file
 134             if (empty($_FILES['newfile'])) {
 135                 notify( $txt->uploadproblem );
 136             }
 137             else if ((!is_uploaded_file($_FILES['newfile']['tmp_name']) or $_FILES['newfile']['size'] == 0)) {
 138                 notify( $txt->uploadproblem );
 139             }
 140             else {
 141                 $importfile = $_FILES['newfile']['tmp_name'];
 142                 $fileisgood = true;
 143             }
 144         }
 145
 146         // process if we are happy file is ok
 147         if ($fileisgood) {
 148
 149             if (! is_readable("format/$format/format.php")) {
 150                 error( get_string('formatnotfound','quiz', $format) );
 151             }
 152
 153             require("format.php");  // Parent class
 154             require("format/$format/format.php");
 155
 156             $classname = "qformat_$format";
 157             $qformat = new $classname();
 158
 159             // load data into class
 160             $qformat->setCategory( $category );
 161             $qformat->setCourse( $course );
 162             $qformat->setFilename( $importfile );
 163             $qformat->setMatchgrades( $params->matchgrades );
 164             $qformat->setCatfromfile( $catfromfile );
 165
 166             if (! $qformat->importpreprocess()) {             // Do anything before that we need to
 167                 error( $txt->importerror ,
 168                       "$CFG->wwwroot/question/import.php?courseid={$course->id}&amp;category=$category->id");
 169             }
 170
 171             if (! $qformat->importprocess() ) {     // Process the uploaded file
 172                 error( $txt->importerror ,
 173                       "$CFG->wwwroot/question/import.php?courseid={$course->id}&amp;category=$category->id");
 174             }
 175
 176             if (! $qformat->importpostprocess()) {                     // In case anything needs to be done after
 177                 error( $txt->importerror ,
 178                       "$CFG->wwwroot/question/import.php?courseid={$course->id}&amp;category=$category->id");
 179             }
 180
 181             echo "<hr />";
 182             print_continue("edit.php?courseid=$course->id");
 183             print_footer($course);
 184             exit;
 185         }
 186     }
 187
 188     /// Print upload form
 189
 190     // get list of available import formats
 191     $fileformatnames = get_import_export_formats( 'import' );
 192
 193     print_heading_with_help($txt->importquestions, "import", "quiz");
 194
 195     /// Get all the existing categories now
 196     if (has_capability('moodle/question:manage', get_context_instance(CONTEXT_SYSTEM, SITEID))) { // the admin can import into all categories
 197         if (!$categories = get_records_select("question_categories", "course = '{$course->id}' OR publish = '1'", "parent, sortorder, name ASC")) {
 198             error("Could not find any question categories!"); // Something is really wrong
 199         }
 200     } else { // select only the categories to which the teacher has write access
 201         $cats = get_records('question_categories');
 202         $categories = array();
 203         foreach ($cats as $cat) {
 204             if (has_capability('moodle/question:managecategory', get_context_instance(CONTEXT_COURSE, $cat->course))) {
 205                 $categories[] = $cat;
 206             }
 207         }
 208         if (empty($categories)) {
 209             error("Could not find any question categories!");
 210         }
 211     }
 212     $categories = add_indented_names($categories);
 213     foreach ($categories as $key => $cat) {
 214        if ($catcourse = get_record("course", "id", $cat->course)) {
 215            if ($cat->publish && $cat->course != $course->id) {
 216                $cat->indentedname .= " ($catcourse->shortname)";
 217            }
 218            $catmenu[$cat->id] = $cat->indentedname;
 219        }
 220     }
 221
 222     //==========
 223     // DISPLAY
 224     //==========
 225
 226     ?>
 227
 228     <form id="form" enctype="multipart/form-data" method="post" action="import.php">
 229         <fieldset class="invisiblefieldset">
 230             <input type="hidden" name="sesskey" value="<?php echo sesskey(); ?>" />
 231             <?php print_simple_box_start("center"); ?>
 232             <table cellpadding="5">
 233                 <tr>
 234                     <td align="right"><?php echo $txt->category; ?>:</td>
 235                     <td><?php choose_from_menu($catmenu, "category", $category->id, ""); ?>
 236                         <?php echo $txt->fromfile; ?>
 237                         <input name="catfromfile" type="checkbox" />
 238                         <?php helpbutton('importcategory', $txt->importcategory, 'quiz'); ?></td>
 239                 </tr>
 240
 241                 <tr>
 242                     <td align="right"><?php echo $txt->fileformat; ?>:</td>
 243                     <td><?php choose_from_menu($fileformatnames, "format", "gift", "");
 244                         helpbutton("import", $txt->importquestions, "quiz"); ?></td>
 245                 </tr>
 246                 <tr>
 247                     <td align="right"><?php echo $txt->matchgrades; ?></td>
 248                     <td><?php choose_from_menu($matchgrades,'matchgrades',$txt->matchgradeserror,'' );
 249                         helpbutton('matchgrades', $txt->matchgrades, 'quiz'); ?></td>
 250                 </tr>
 251             </table>
 252             <?php
 253             print_simple_box_end();
 254
 255             print_simple_box_start('center'); ?>
 256             <?php echo $txt->importfileupload; ?>
 257             <table cellpadding="5">
 258                 <tr>
 259                     <td align="right"><?php echo $txt->upload; ?>:</td>
 260                     <td><?php upload_print_form_fragment(1,array('newfile'),null,false,null,$course->maxbytes,0,false); ?></td>
 261                 </tr>
 262
 263                 <tr>
 264                     <td>&nbsp;</td>
 265                     <td><input type="submit" name="save" value="<?php echo $txt->uploadthisfile; ?>" /></td>
 266                 </tr>
 267             </table>
 268             <?php
 269             print_simple_box_end();
 270
 271             print_simple_box_start('center'); ?>
 272             <?php echo $txt->importfilearea; ?>
 273             <table cellpadding="5">
 274                 <tr>
 275                     <td align="right"><?php echo $txt->file; ?>:</td>
 276                     <td><input type="text" name="choosefile" size="50" /></td>
 277                 </tr>
 278
 279                 <tr>
 280                     <td>&nbsp;</td>
 281                     <td><?php  button_to_popup_window ("/files/index.php?id={$course->id}&amp;choose=form.choosefile",
 282                         "coursefiles", $txt->choosefile, 500, 750, $txt->choosefile); ?>
 283                         <input type="submit" name="save" value="<?php echo $txt->importfromthisfile; ?>" /></td>
 284                 </tr>
 285             </table>
 286             <?php
 287             print_simple_box_end(); ?>
 288         </fieldset>
 289     </form>
 290
 291     <?php
 292     print_footer($course);
 293
 294 ?>