question/import.php

   1 <?php // $Id$
   2 /**
   3  * Import 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     require_once($CFG->libdir . '/uploadlib.php');
  15     require_once($CFG->libdir . '/questionlib.php');
  16
  17     list($thispageurl, $courseid, $cmid, $cm, $module, $pagevars) = question_edit_setup(false, false);
  18
  19     // get parameters
  20     $params = new stdClass;
  21     $params->choosefile = optional_param('choosefile','',PARAM_PATH);
  22     $catfromfile = optional_param('catfromfile', 0, PARAM_BOOL );
  23     $format = optional_param('format','',PARAM_FILE);
  24     $params->matchgrades = optional_param('matchgrades','',PARAM_ALPHA);
  25     $params->stoponerror = optional_param('stoponerror', 0, PARAM_BOOL);
  26
  27     // get display strings
  28     $txt = new stdClass();
  29     $txt->category = get_string('category','quiz');
  30     $txt->choosefile = get_string('choosefile','quiz');
  31     $txt->file = get_string('file');
  32     $txt->fileformat = get_string('fileformat','quiz');
  33     $txt->fromfile = get_string('fromfile','quiz');
  34     $txt->importcategory = get_string('importcategory','quiz');
  35     $txt->importerror = get_string('importerror','quiz');
  36     $txt->importfilearea = get_string('importfilearea','quiz');
  37     $txt->importfileupload = get_string('importfileupload','quiz');
  38     $txt->importfromthisfile = get_string('importfromthisfile','quiz');
  39     $txt->importquestions = get_string("importquestions", "quiz");
  40     $txt->matchgrades = get_string('matchgrades','quiz');
  41     $txt->matchgradeserror = get_string('matchgradeserror','quiz');
  42     $txt->matchgradesnearest = get_string('matchgradesnearest','quiz');
  43     $txt->modulename = get_string('modulename','quiz');
  44     $txt->modulenameplural = get_string('modulenameplural','quiz');
  45     $txt->onlyteachersimport = get_string('onlyteachersimport','quiz');
  46     $txt->questions = get_string("questions", "quiz");
  47     $txt->quizzes = get_string('modulenameplural', 'quiz');
  48     $txt->stoponerror = get_string('stoponerror', 'quiz');
  49     $txt->upload = get_string('upload');
  50     $txt->uploadproblem = get_string('uploadproblem');
  51     $txt->uploadthisfile = get_string('uploadthisfile');
  52
  53     // matching options
  54     $matchgrades = array();
  55     $matchgrades['error'] = $txt->matchgradeserror;
  56     $matchgrades['nearest'] = $txt->matchgradesnearest;
  57
  58
  59
  60     if (!$category = get_record("question_categories", "id", $pagevars['cat'])) {
  61         // if no valid category was given, use the default category
  62         print_error('nocategory','quiz');
  63     }
  64
  65     if (!$courseid) { // need to get the course from the chosen category
  66         $courseid = $category->course;
  67     }
  68
  69     if (!$course = get_record("course", "id", $courseid)) {
  70         error("Invalid course!");
  71     }
  72
  73     require_login($course->id, false);
  74
  75     $context = get_context_instance(CONTEXT_COURSE, $course->id);
  76     require_capability('moodle/question:import', $context);
  77
  78     // ensure the files area exists for this course
  79     make_upload_directory( "$course->id" );
  80
  81
  82     //==========
  83     // PAGE HEADER
  84     //==========
  85
  86     if ($cm!==null) {
  87         $strupdatemodule = has_capability('moodle/course:manageactivities', get_context_instance(CONTEXT_COURSE, $course->id))
  88             ? update_module_button($cm->id, $course->id, get_string('modulename', $cm->modname))
  89             : "";
  90         $navlinks = array();
  91         $navlinks[] = array('name' => get_string('modulenameplural', $cm->modname), 'link' => "$CFG->wwwroot/mod/{$cm->modname}/index.php?id=$course->id", 'type' => 'activity');
  92         $navlinks[] = array('name' => format_string($module->name), 'link' => "$CFG->wwwroot/mod/{$cm->modname}/view.php?cmid={$cm->id}", 'type' => 'title');
  93         $navlinks[] = array('name' => $txt->importquestions, 'link' => '', 'type' => 'title');
  94         $navigation = build_navigation($navlinks);
  95         print_header_simple($txt->importquestions, '', $navigation, "", "", true, $strupdatemodule);
  96
  97         $currenttab = 'edit';
  98         $mode = 'import';
  99         ${$cm->modname} = $module;
 100         include($CFG->dirroot."/mod/$cm->modname/tabs.php");
 101     } else {
 102         // Print basic page layout.
 103         $navlinks = array();
 104         $navlinks[] = array('name' => $txt->importquestions, 'link' => '', 'type' => 'title');
 105         $navigation = build_navigation($navlinks);
 106
 107         print_header_simple($txt->importquestions, '', $navigation);
 108         // print tabs
 109         $currenttab = 'import';
 110         include('tabs.php');
 111     }
 112
 113
 114     // file upload form sumitted
 115     if (!empty($format) and confirm_sesskey() ) {
 116
 117         // file checks out ok
 118         $fileisgood = false;
 119
 120         // work out if this is an uploaded file
 121         // or one from the filesarea.
 122         if (!empty($params->choosefile)) {
 123             $importfile = "{$CFG->dataroot}/{$course->id}/{$params->choosefile}";
 124             if (file_exists($importfile)) {
 125                 $fileisgood = true;
 126             }
 127             else {
 128                 notify($txt->uploadproblem);
 129             }
 130         } else {
 131             // must be upload file
 132             if (empty($_FILES['newfile'])) {
 133                 notify( $txt->uploadproblem );
 134             }
 135             else if ((!is_uploaded_file($_FILES['newfile']['tmp_name']) or $_FILES['newfile']['size'] == 0)) {
 136                 notify( $txt->uploadproblem );
 137             }
 138             else {
 139                 $importfile = $_FILES['newfile']['tmp_name'];
 140                 $fileisgood = true;
 141             }
 142         }
 143
 144         // process if we are happy file is ok
 145         if ($fileisgood) {
 146
 147             if (! is_readable("format/$format/format.php")) {
 148                 error( get_string('formatnotfound','quiz', $format) );
 149             }
 150
 151             require("format.php");  // Parent class
 152             require("format/$format/format.php");
 153
 154             $classname = "qformat_$format";
 155             $qformat = new $classname();
 156
 157             // load data into class
 158             $qformat->setCategory( $category );
 159             $qformat->setCourse( $course );
 160             $qformat->setFilename( $importfile );
 161             $qformat->setMatchgrades( $params->matchgrades );
 162             $qformat->setCatfromfile( $catfromfile );
 163             $qformat->setStoponerror( $params->stoponerror );
 164
 165             // Do anything before that we need to
 166             if (! $qformat->importpreprocess()) {
 167                 error( $txt->importerror, $thispageurl->out(false, array('category'=>$category->id)));
 168             }
 169
 170             // Process the uploaded file
 171             if (! $qformat->importprocess() ) {
 172                 error( $txt->importerror, $thispageurl->out(false, array('category'=>$category->id)));
 173             }
 174
 175             // In case anything needs to be done after
 176             if (! $qformat->importpostprocess()) {
 177                 error( $txt->importerror, $thispageurl->out(false, array('category'=>$category->id)));
 178             }
 179
 180             echo "<hr />";
 181             print_continue("edit.php?".$thispageurl->get_query_string());
 182             print_footer($course);
 183             exit;
 184         }
 185     }
 186
 187     /// Print upload form
 188
 189     // get list of available import formats
 190     $fileformatnames = get_import_export_formats( 'import' );
 191
 192     print_heading_with_help($txt->importquestions, "import", "quiz");
 193
 194     /// Get all the existing categories now
 195     $catmenu = question_category_options($course->id, false, true);
 196
 197     //==========
 198     // DISPLAY
 199     //==========
 200
 201     ?>
 202
 203     <form id="form" enctype="multipart/form-data" method="post" action="import.php">
 204         <fieldset class="invisiblefieldset" style="display: block;">
 205             <input type="hidden" name="sesskey" value="<?php echo sesskey(); ?>" />
 206             <?php echo $thispageurl->hidden_params_out(array(), 3); ?>
 207             <?php print_simple_box_start("center"); ?>
 208             <table cellpadding="5">
 209                 <tr>
 210                     <td align="right"><?php echo $txt->category; ?>:</td>
 211                     <td><?php choose_from_menu($catmenu, "category", $category->id, ""); ?>
 212                         <?php echo $txt->fromfile; ?>
 213                         <input name="catfromfile" type="checkbox" />
 214                         <?php helpbutton('importcategory', $txt->importcategory, 'quiz'); ?></td>
 215                 </tr>
 216
 217                 <tr>
 218                     <td align="right"><?php echo $txt->fileformat; ?>:</td>
 219                     <td><?php choose_from_menu($fileformatnames, 'format', 'gift', '');
 220                         helpbutton("import", $txt->importquestions, 'quiz'); ?></td>
 221                 </tr>
 222                 <tr>
 223                     <td align="right"><?php echo $txt->matchgrades; ?></td>
 224                     <td><?php choose_from_menu($matchgrades,'matchgrades',$txt->matchgradeserror,'' );
 225                         helpbutton('matchgrades', $txt->matchgrades, 'quiz'); ?></td>
 226                 </tr>
 227                 <tr>
 228                     <td align="right"><?php echo $txt->stoponerror; ?></td>
 229                     <td><input name="stoponerror" type="checkbox" checked="checked" />
 230                     <?php helpbutton('stoponerror', $txt->stoponerror, 'quiz'); ?></td>
 231                 </tr>
 232             </table>
 233             <?php
 234             print_simple_box_end();
 235
 236             print_simple_box_start('center'); ?>
 237             <?php echo $txt->importfileupload; ?>
 238             <table cellpadding="5">
 239                 <tr>
 240                     <td align="right"><?php echo $txt->upload; ?>:</td>
 241                     <td><?php upload_print_form_fragment(1,array('newfile'),null,false,null,$course->maxbytes,0,false); ?></td>
 242                 </tr>
 243
 244                 <tr>
 245                     <td>&nbsp;</td>
 246                     <td><input type="submit" name="save" value="<?php echo $txt->uploadthisfile; ?>" /></td>
 247                 </tr>
 248             </table>
 249             <?php
 250             print_simple_box_end();
 251
 252             print_simple_box_start('center'); ?>
 253             <?php echo $txt->importfilearea; ?>
 254             <table cellpadding="5">
 255                 <tr>
 256                     <td align="right"><?php echo $txt->file; ?>:</td>
 257                     <td><input type="text" name="choosefile" size="50" /></td>
 258                 </tr>
 259
 260                 <tr>
 261                     <td>&nbsp;</td>
 262                     <td><?php  button_to_popup_window ("/files/index.php?id={$course->id}&amp;choose=form.choosefile",
 263                         "coursefiles", $txt->choosefile, 500, 750, $txt->choosefile); ?>
 264                         <input type="submit" name="save" value="<?php echo $txt->importfromthisfile; ?>" /></td>
 265                 </tr>
 266             </table>
 267             <?php
 268             print_simple_box_end(); ?>
 269         </fieldset>
 270     </form>
 271
 272     <?php
 273     print_footer($course);
 274
 275 ?>