question/export.php

   1 <?php // $Id$
   2 /**
   3 * Export 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("locallib.php"); // TODO: this should not need locallib.php
  14     require_once($CFG->libdir.'/questionlib.php');
  15
  16     $categoryid = optional_param('category',0, PARAM_INT);
  17     $courseid = required_param('courseid',PARAM_INT);
  18     $format = optional_param('format','', PARAM_CLEANFILE );
  19     $exportfilename = optional_param('exportfilename','',PARAM_CLEANFILE );
  20
  21     if (! $course = get_record("course", "id", $courseid)) {
  22         error("Course does not exist!");
  23     }
  24
  25     if (!$categoryid) { // need to get category from modform
  26         $showcatmenu = true; // will ensure that user can choose category
  27         if (isset($SESSION->modform)) {
  28             $categoryid = $SESSION->modform->category;
  29         }
  30     }
  31
  32     if (! $category = get_record("quiz_categories", "id", $categoryid)) {
  33         $category = quiz_get_default_category($courseid);
  34     }
  35
  36     if (! $categorycourse = get_record("course", "id", $category->course)) {
  37         error("This category doesn't belong to a valid course!");
  38     }
  39
  40     require_login($course->id, false);
  41
  42     if (!isteacher($course->id)) {
  43         error("Only the teacher can export quiz questions!");
  44     }
  45
  46     // ensure the files area exists for this course
  47     make_upload_directory( "$course->id" );
  48
  49     $strexportquestions = get_string("exportquestions", "quiz");
  50     $strquestions = get_string("questions", "quiz");
  51
  52     $strquizzes = get_string('modulenameplural', 'quiz');
  53     $streditingquiz = get_string(isset($SESSION->modform->instance) ? "editingquiz" : "editquestions", "quiz");
  54
  55     $dirname = get_string("exportfilename","quiz");
  56
  57     /// Header:
  58
  59     if (isset($SESSION->modform->instance) and $quiz = get_record('quiz', 'id', $SESSION->modform->instance)) {
  60         $strupdatemodule = isteacheredit($course->id)
  61             ? update_module_button($SESSION->modform->cmid, $course->id, get_string('modulename', 'quiz'))
  62             : "";
  63         print_header_simple($strexportquestions, '',
  64                  "<a href=\"index.php?id=$course->id\">".get_string('modulenameplural', 'quiz').'</a>'.
  65                  " -> <a href=\"view.php?q=$quiz->id\">".format_string($quiz->name).'</a>'.
  66                  ' -> '.$strexportquestions,
  67                  "", "", true, $strupdatemodule);
  68         $currenttab = 'edit';
  69         $mode = 'export';
  70         include('tabs.php');
  71     } else {
  72         print_header_simple($strexportquestions, '',
  73                  '<a href="edit.php">'.get_string('editquestions', 'quiz').'</a>'.
  74                  ' -> '.$strexportquestions);
  75     }
  76
  77     if (!empty($format)) {   /// Filename
  78
  79         if (!confirm_sesskey()) {
  80             echo( 'Sesskey error' );
  81         }
  82
  83         if (! is_readable("format/$format/format.php")) {
  84             error('Format not known ('.clean_text($form->format).')');
  85         }
  86
  87         require("format.php");  // Parent class
  88         require("format/$format/format.php");
  89
  90         $classname = "quiz_format_$format";
  91         $quiz_format = new $classname();
  92
  93         if (! $quiz_format->exportpreprocess($category, $course)) {   // Do anything before that we need to
  94             error("Error occurred during pre-processing!",
  95                     "$CFG->wwwroot/mod/quiz/export.php?category=$category->id");
  96         }
  97
  98         if (! $quiz_format->exportprocess($exportfilename)) {         // Process the export data
  99             error("Error occurred during processing!",
 100                     "$CFG->wwwroot/mod/quiz/export.php?category=$category->id");
 101         }
 102
 103         if (! $quiz_format->exportpostprocess()) {                    // In case anything needs to be done after
 104             error("Error occurred during post-processing!",
 105                     "$CFG->wwwroot/mod/quiz/export.php?category=$category->id");
 106         }
 107         echo "<hr />";
 108
 109         // link to download the finished file
 110         $file_ext = $quiz_format->export_file_extension();
 111         $download_str = get_string( 'download', 'quiz' );
 112         $downloadextra_str = get_string( 'downloadextra','quiz' );
 113         if ($CFG->slasharguments) {
 114           $efile = "{$CFG->wwwroot}/file.php/$course->id/quiz/$exportfilename".$file_ext;
 115         }
 116         else {
 117           $efile = "{$CFG->wwwroot}/file.php?file=/$course->id/quiz/$exportfilename".$file_ext;
 118         }
 119         $efile .= "?forcedownload=1";
 120         echo "</p><center><a href=\"$efile\">$download_str</a></center></p>";
 121         echo "</p><center><font size=\"-1\">$downloadextra_str</font></center></p>";
 122
 123         print_continue("edit.php");
 124         print_footer($course);
 125         exit;
 126     }
 127
 128     /// Print upload form
 129
 130     // get valid formats to generate dropdown list
 131     $fileformatnames = get_import_export_formats( "export" );
 132
 133     // get filename
 134     if (empty($exportfilename)) {
 135         $exportfilename = default_export_filename($course, $category);
 136     }
 137
 138     /// Get all the existing categories now
 139     if (!$categories = get_records_select("quiz_categories", "course = '{$course->id}' OR publish = '1'", "parent, sortorder, name ASC")) {
 140         error("Could not find any question categories!");
 141     }
 142     $categories = add_indented_names($categories);
 143     foreach ($categories as $key => $cat) {
 144        if ($catcourse = get_record("course", "id", $cat->course)) {
 145            if ($cat->publish && $cat->course != $course->id) {
 146                $cat->indentedname .= " ($catcourse->shortname)";
 147            }
 148            $catmenu[$cat->id] = $cat->indentedname;
 149        }
 150     }
 151
 152     print_heading_with_help($strexportquestions, "export", "quiz");
 153
 154     print_simple_box_start("center");
 155     echo "<form enctype=\"multipart/form-data\" method=\"post\" action=\"export.php\">\n";
 156     echo "<input type=\"hidden\" name=\"sesskey\" value=\"" . sesskey() . "\" />\n";
 157     echo "<table cellpadding=\"5\">\n";
 158
 159     echo "<tr><td align=\"right\">\n";
 160     print_string("category", "quiz");
 161     echo ":</td><td>";
 162     if (!$showcatmenu) { // category already specified
 163         echo quiz_get_category_coursename($category);
 164         echo " <input type=\"hidden\" name=\"category\" value=\"$category->id\" />";
 165     } else { // no category specified, let user choose
 166         choose_from_menu($catmenu, "category", $category->id, "");
 167     }
 168     //echo str_replace('&nbsp;', '', $category->name) . " ($categorycourse->shortname)";
 169     echo "</td></tr>\n";
 170
 171     echo "<tr><td align=\"right\">";
 172     print_string("fileformat", "quiz");
 173     echo ":</td><td>";
 174     choose_from_menu($fileformatnames, "format", "gift", "");
 175     helpbutton("export", $strexportquestions, "quiz");
 176     echo "</td></tr>\n";
 177
 178     echo "<tr><td align=\"right\">";
 179     print_string("exportname", "quiz" );
 180     echo ":</td><td>";
 181     echo "<input type=\"text\" size=\"40\" name=\"exportfilename\" value=\"$exportfilename\" />";
 182     echo "</td></tr>\n";
 183
 184     echo "<tr><td align=\"center\" colspan=\"2\">";
 185     echo " <input type=\"hidden\" name=\"courseid\" value=\"$course->id\" />";
 186     echo " <input type=\"submit\" name=\"save\" value=\"".get_string("exportquestions","quiz")."\" />";
 187     echo "</td></tr>\n";
 188
 189     echo "</table>\n";
 190     echo "</form>\n";
 191     print_simple_box_end();
 192
 193     print_footer($course);
 194
 195 ?>