question/export.php

   1 <?php // $Id$
   2 /**
   3  * Export quiz questions into the given category
   4  *
   5  * @author Martin Dougiamas, Howard Miller, and many others.
   6  *         {@link http://moodle.org}
   7  * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   8  * @package questionbank
   9  * @subpackage importexport
  10  */
  11
  12     require_once("../config.php");
  13     require_once( "editlib.php" );
  14
  15     // get parameters
  16     $categoryid = optional_param('category',0, PARAM_INT);
  17     $cattofile = optional_param('cattofile',0, PARAM_BOOL);
  18     $courseid = required_param('courseid',PARAM_INT);
  19     $exportfilename = optional_param('exportfilename','',PARAM_FILE );
  20     $format = optional_param('format','', PARAM_FILE );
  21
  22
  23     // get display strings
  24     $txt = new object;
  25     $txt->category = get_string('category','quiz');
  26     $txt->download = get_string('download','quiz');
  27     $txt->downloadextra = get_string('downloadextra','quiz');
  28     $txt->exporterror = get_string('exporterror','quiz');
  29     $txt->exportname = get_string('exportname','quiz');
  30     $txt->exportquestions = get_string('exportquestions', 'quiz');
  31     $txt->fileformat = get_string('fileformat','quiz');
  32     $txt->exportcategory = get_string('exportcategory','quiz');
  33     $txt->modulename = get_string('modulename','quiz');
  34     $txt->modulenameplural = get_string('modulenameplural','quiz');
  35     $txt->tofile = get_string('tofile','quiz');
  36
  37
  38     if (!$course = get_record("course", "id", $courseid)) {
  39         error("Course does not exist!");
  40     }
  41
  42     if ($categoryid) { // update category in session variable
  43         $SESSION->questioncat = $categoryid;
  44     } else { // try to get category from modform
  45         if (isset($SESSION->questioncat)) {
  46             $categoryid = $SESSION->questioncat;
  47         }
  48     }
  49
  50     if (!$category = get_record("question_categories", "id", $categoryid)) {
  51         $category = get_default_question_category($courseid);
  52     }
  53
  54     if (!$categorycourse = get_record("course", "id", $category->course)) {
  55         print_error('nocategory','quiz');
  56     }
  57
  58     require_login($course->id, false);
  59
  60     // check role capability
  61     $context = get_context_instance(CONTEXT_COURSE, $course->id);
  62     require_capability('moodle/question:export', $context);
  63
  64     // ensure the files area exists for this course
  65     make_upload_directory( "$course->id" );
  66
  67     // check category is valid
  68     if (!empty($categoryid)) {
  69         $validcats = question_category_options( $course->id, true, false );
  70         if (!array_key_exists( $categoryid, $validcats)) {
  71             print_error( "Category id ($categoryid) is not permitted." );
  72         }
  73     }
  74
  75     /// Header
  76     if (isset($SESSION->modform->instance) and $quiz = get_record('quiz', 'id', $SESSION->modform->instance)) {
  77         $strupdatemodule = has_capability('moodle/course:manageactivities', $context)
  78             ? update_module_button($SESSION->modform->cmid, $course->id, $txt->modulename )
  79             : "";
  80         print_header_simple($txt->exportquestions, '',
  81             "<a href=\"$CFG->wwwroot/mod/quiz/index.php?id=$course->id\">$txt->modulenameplural</a>".
  82             " -> <a href=\"$CFG->wwwroot/mod/quiz/view.php?q=$quiz->id\">".format_string($quiz->name).'</a>'.
  83             ' -> '.$txt->exportquestions,
  84             "", "", true, $strupdatemodule);
  85         $currenttab = 'edit';
  86         $mode = 'export';
  87         include($CFG->dirroot.'/mod/quiz/tabs.php');
  88     } else {
  89         print_header_simple($txt->exportquestions, '', $txt->exportquestions);
  90         // print tabs
  91         $currenttab = 'export';
  92         include('tabs.php');
  93     }
  94
  95     if (!empty($format)) {   /// Filename
  96
  97         if (!confirm_sesskey()) {
  98             print_error( 'sesskey' );
  99         }
 100
 101         if (! is_readable("format/$format/format.php")) {
 102             error( "Format not known ($format)" );  }
 103
 104         // load parent class for import/export
 105         require("format.php");
 106
 107         // and then the class for the selected format
 108         require("format/$format/format.php");
 109
 110         $classname = "qformat_$format";
 111         $qformat = new $classname();
 112
 113         $qformat->setCategory( $category );
 114         $qformat->setCourse( $course );
 115         $qformat->setFilename( $exportfilename );
 116         $qformat->setCattofile( $cattofile );
 117
 118         if (! $qformat->exportpreprocess()) {   // Do anything before that we need to
 119             error( $txt->exporterror, "$CFG->wwwroot/question/export.php?courseid={$course->id}&amp;category=$category->id");
 120         }
 121
 122         if (! $qformat->exportprocess()) {         // Process the export data
 123             error( $txt->exporterror, "$CFG->wwwroot/question/export.php?courseid={$course->id}&amp;category=$category->id");
 124         }
 125
 126         if (! $qformat->exportpostprocess()) {                    // In case anything needs to be done after
 127             error( $txt->exporterror, "$CFG->wwwroot/question/export.php?courseid={$course->id}&amp;category=$category->id");
 128         }
 129         echo "<hr />";
 130
 131         // link to download the finished file
 132         $file_ext = $qformat->export_file_extension();
 133         if ($CFG->slasharguments) {
 134           $efile = "{$CFG->wwwroot}/file.php/".$qformat->question_get_export_dir()."/$exportfilename".$file_ext."?forcedownload=1";
 135         }
 136         else {
 137           $efile = "{$CFG->wwwroot}/file.php?file=/".$qformat->question_get_export_dir()."/$exportfilename".$file_ext."&forcedownload=1";
 138         }
 139         echo "<p><div class=\"boxaligncenter\"><a href=\"$efile\">$txt->download</a></div></p>";
 140         echo "<p><div class=\"boxaligncenter\"><font size=\"-1\">$txt->downloadextra</font></div></p>";
 141
 142         print_continue("edit.php?courseid=$course->id");
 143         print_footer($course);
 144         exit;
 145     }
 146
 147     /// Display upload form
 148
 149     // get valid formats to generate dropdown list
 150     $fileformatnames = get_import_export_formats( 'export' );
 151
 152     // get filename
 153     if (empty($exportfilename)) {
 154         $exportfilename = default_export_filename($course, $category);
 155     }
 156
 157     print_heading_with_help($txt->exportquestions, 'export', 'quiz');
 158     print_simple_box_start('center');
 159 ?>
 160
 161     <form enctype="multipart/form-data" method="post" action="export.php">
 162         <fieldset class="invisiblefieldset" style="display: block;">
 163             <input type="hidden" name="sesskey" value="<?php echo sesskey(); ?>" />
 164             <input type="hidden" name="courseid" value="<?php echo $course->id; ?>" />
 165
 166             <table cellpadding="5">
 167                 <tr>
 168                     <td align="right"><?php echo $txt->category; ?>:</td>
 169                     <td>
 170                         <?php
 171                         question_category_select_menu($course->id, true, false, $category->id);
 172                         echo $txt->tofile; ?>
 173                         <input name="cattofile" type="checkbox" />
 174                         <?php helpbutton('exportcategory', $txt->exportcategory, 'quiz'); ?>
 175                     </td>
 176                 </tr>
 177                 <tr>
 178                     <td align="right"><?php echo $txt->fileformat; ?>:</td>
 179                     <td>
 180                         <?php choose_from_menu($fileformatnames, 'format', 'gift', '');
 181                         helpbutton('export', $txt->exportquestions, 'quiz'); ?>
 182                     </td>
 183                 </tr>
 184                 <tr>
 185                     <td align="right"><?php echo $txt->exportname; ?>:</td>
 186                     <td>
 187                         <input type="text" size="40" name="exportfilename" value="<?php echo $exportfilename; ?>" />
 188                     </td>
 189                 </tr>
 190                 <tr>
 191                     <td align="center" >
 192                         <input type="submit" name="save" value="<?php echo $txt->exportquestions; ?>" />
 193                     </td>
 194                     <td>&nbsp;</td>
 195                 </tr>
 196             </table>
 197         </fieldset>
 198     </form>
 199     <?php
 200
 201     print_simple_box_end();
 202     print_footer($course);
 203 ?>
 204