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     $params->category = optional_param( 'category', 0, PARAM_INT );
  27
  28     // get display strings
  29     $txt = new stdClass();
  30     $txt->category = get_string('category','quiz');
  31     $txt->choosefile = get_string('choosefile','quiz');
  32     $txt->file = get_string('file');
  33     $txt->fileformat = get_string('fileformat','quiz');
  34     $txt->fromfile = get_string('fromfile','quiz');
  35     $txt->importcategory = get_string('importcategory','quiz');
  36     $txt->importerror = get_string('importerror','quiz');
  37     $txt->importfilearea = get_string('importfilearea','quiz');
  38     $txt->importfileupload = get_string('importfileupload','quiz');
  39     $txt->importfromthisfile = get_string('importfromthisfile','quiz');
  40     $txt->importquestions = get_string("importquestions", "quiz");
  41     $txt->matchgrades = get_string('matchgrades','quiz');
  42     $txt->matchgradeserror = get_string('matchgradeserror','quiz');
  43     $txt->matchgradesnearest = get_string('matchgradesnearest','quiz');
  44     $txt->modulename = get_string('modulename','quiz');
  45     $txt->modulenameplural = get_string('modulenameplural','quiz');
  46     $txt->onlyteachersimport = get_string('onlyteachersimport','quiz');
  47     $txt->questions = get_string("questions", "quiz");
  48     $txt->quizzes = get_string('modulenameplural', 'quiz');
  49     $txt->stoponerror = get_string('stoponerror', 'quiz');
  50     $txt->upload = get_string('upload');
  51     $txt->uploadproblem = get_string('uploadproblem');
  52     $txt->uploadthisfile = get_string('uploadthisfile');
  53
  54     // matching options
  55     $matchgrades = array();
  56     $matchgrades['error'] = $txt->matchgradeserror;
  57     $matchgrades['nearest'] = $txt->matchgradesnearest;
  58
  59     // not sure where $pagevars['cat'] comes from, but it doesn't respect
  60     // the user's choice on the form - so this bodge
  61     if (empty($params->category)) {
  62         $params->category = $pagevars['cat'];
  63     }
  64
  65     if (!$category = get_record("question_categories", "id", $params->category)) {
  66         // if no valid category was given, use the default category
  67         print_error('nocategory','quiz');
  68     }
  69
  70     // check category is valid (against THIS courseid, before we change it)
  71     $validcats = question_category_options( $cmid, false, true );
  72     if (!array_key_exists( $params->category, $validcats )) {
  73         print_error( 'invalidcategory', 'quiz' );
  74     }
  75
  76     $localcourseid = $cmid;
  77     $courseid = $category->course;
  78
  79     if (!$course = get_record("course", "id", $courseid)) {
  80         error("Invalid course!");
  81     }
  82
  83     require_login($course->id, false);
  84
  85     $context = get_context_instance(CONTEXT_COURSE, $course->id);
  86     require_capability('moodle/question:import', $context);
  87
  88     // ensure the files area exists for this course
  89     make_upload_directory( "$course->id" );
  90
  91
  92     //==========
  93     // PAGE HEADER
  94     //==========
  95
  96     if ($cm!==null) {
  97         $strupdatemodule = has_capability('moodle/course:manageactivities', get_context_instance(CONTEXT_COURSE, $course->id))
  98             ? update_module_button($cm->id, $course->id, get_string('modulename', $cm->modname))
  99             : "";
 100         $navlinks = array();
 101         $navlinks[] = array('name' => get_string('modulenameplural', $cm->modname), 'link' => "$CFG->wwwroot/mod/{$cm->modname}/index.php?id=$course->id", 'type' => 'activity');
 102         $navlinks[] = array('name' => format_string($module->name), 'link' => "$CFG->wwwroot/mod/{$cm->modname}/view.php?cmid={$cm->id}", 'type' => 'title');
 103         $navlinks[] = array('name' => $txt->importquestions, 'link' => '', 'type' => 'title');
 104         $navigation = build_navigation($navlinks);
 105         print_header_simple($txt->importquestions, '', $navigation, "", "", true, $strupdatemodule);
 106
 107         $currenttab = 'edit';
 108         $mode = 'import';
 109         ${$cm->modname} = $module;
 110         include($CFG->dirroot."/mod/$cm->modname/tabs.php");
 111     } else {
 112         // Print basic page layout.
 113         $navlinks = array();
 114         $navlinks[] = array('name' => $txt->importquestions, 'link' => '', 'type' => 'title');
 115         $navigation = build_navigation($navlinks);
 116
 117         print_header_simple($txt->importquestions, '', $navigation);
 118         // print tabs
 119         $currenttab = 'import';
 120         include('tabs.php');
 121     }
 122
 123
 124     // file upload form sumitted
 125     if (!empty($format) and confirm_sesskey() ) {
 126
 127         // file checks out ok
 128         $fileisgood = false;
 129
 130         // work out if this is an uploaded file
 131         // or one from the filesarea.
 132         if (!empty($params->choosefile)) {
 133             $importfile = "{$CFG->dataroot}/{$course->id}/{$params->choosefile}";
 134             if (file_exists($importfile)) {
 135                 $fileisgood = true;
 136             }
 137             else {
 138                 notify($txt->uploadproblem);
 139             }
 140         } else {
 141             // must be upload file
 142             if (empty($_FILES['newfile'])) {
 143                 notify( $txt->uploadproblem );
 144             }
 145             else if ((!is_uploaded_file($_FILES['newfile']['tmp_name']) or $_FILES['newfile']['size'] == 0)) {
 146                 notify( $txt->uploadproblem );
 147             }
 148             else {
 149                 $importfile = $_FILES['newfile']['tmp_name'];
 150                 $fileisgood = true;
 151             }
 152         }
 153
 154         // process if we are happy file is ok
 155         if ($fileisgood) {
 156
 157             if (! is_readable("format/$format/format.php")) {
 158                 error( get_string('formatnotfound','quiz', $format) );
 159             }
 160
 161             require("format.php");  // Parent class
 162             require("format/$format/format.php");
 163
 164             $classname = "qformat_$format";
 165             $qformat = new $classname();
 166
 167             // load data into class
 168             $qformat->setCategory( $category );
 169             $qformat->setCourse( $course );
 170             $qformat->setFilename( $importfile );
 171             $qformat->setMatchgrades( $params->matchgrades );
 172             $qformat->setCatfromfile( $catfromfile );
 173             $qformat->setStoponerror( $params->stoponerror );
 174
 175             // Do anything before that we need to
 176             if (! $qformat->importpreprocess()) {
 177                 error( $txt->importerror, $thispageurl->out(false, array('category'=>$category->id)));
 178             }
 179
 180             // Process the uploaded file
 181             if (! $qformat->importprocess() ) {
 182                 error( $txt->importerror, $thispageurl->out(false, array('category'=>$category->id)));
 183             }
 184
 185             // In case anything needs to be done after
 186             if (! $qformat->importpostprocess()) {
 187                 error( $txt->importerror, $thispageurl->out(false, array('category'=>$category->id)));
 188             }
 189
 190             echo "<hr />";
 191             print_continue("edit.php?".$thispageurl->get_query_string());
 192             print_footer($course);
 193             exit;
 194         }
 195     }
 196
 197     /// Print upload form
 198
 199     // get list of available import formats
 200     $fileformatnames = get_import_export_formats( 'import' );
 201
 202     print_heading_with_help($txt->importquestions, "import", "quiz");
 203
 204     /// Get all the existing categories now
 205     $catmenu = question_category_options($course->id, false, true);
 206
 207     //==========
 208     // DISPLAY
 209     //==========
 210
 211     ?>
 212
 213     <form id="form" enctype="multipart/form-data" method="post" action="import.php">
 214         <fieldset class="invisiblefieldset" style="display: block;">
 215             <input type="hidden" name="sesskey" value="<?php echo sesskey(); ?>" />
 216             <input type="hidden" name="courseid" value="<?php echo $localcourseid ?>" />
 217             <?php echo $thispageurl->hidden_params_out(array(), 3); ?>
 218             <?php print_simple_box_start("center"); ?>
 219             <table cellpadding="5">
 220                 <tr>
 221                     <td align="right"><?php echo $txt->category; ?>:</td>
 222                     <td><?php choose_from_menu($catmenu, "category", $category->id, ""); ?>
 223                         <?php echo $txt->fromfile; ?>
 224                         <input name="catfromfile" type="checkbox" />
 225                         <?php helpbutton('importcategory', $txt->importcategory, 'quiz'); ?></td>
 226                 </tr>
 227
 228                 <tr>
 229                     <td align="right"><?php echo $txt->fileformat; ?>:</td>
 230                     <td><?php choose_from_menu($fileformatnames, 'format', 'gift', '');
 231                         helpbutton("import", $txt->importquestions, 'quiz'); ?></td>
 232                 </tr>
 233                 <tr>
 234                     <td align="right"><?php echo $txt->matchgrades; ?></td>
 235                     <td><?php choose_from_menu($matchgrades,'matchgrades',$txt->matchgradeserror,'' );
 236                         helpbutton('matchgrades', $txt->matchgrades, 'quiz'); ?></td>
 237                 </tr>
 238                 <tr>
 239                     <td align="right"><?php echo $txt->stoponerror; ?></td>
 240                     <td><input name="stoponerror" type="checkbox" checked="checked" />
 241                     <?php helpbutton('stoponerror', $txt->stoponerror, 'quiz'); ?></td>
 242                 </tr>
 243             </table>
 244             <?php
 245             print_simple_box_end();
 246
 247             print_simple_box_start('center'); ?>
 248             <?php echo $txt->importfileupload; ?>
 249             <table cellpadding="5">
 250                 <tr>
 251                     <td align="right"><?php echo $txt->upload; ?>:</td>
 252                     <td><?php upload_print_form_fragment(1,array('newfile'),null,false,null,$course->maxbytes,0,false); ?></td>
 253                 </tr>
 254
 255                 <tr>
 256                     <td>&nbsp;</td>
 257                     <td><input type="submit" name="save" value="<?php echo $txt->uploadthisfile; ?>" /></td>
 258                 </tr>
 259             </table>
 260             <?php
 261             print_simple_box_end();
 262
 263             print_simple_box_start('center'); ?>
 264             <?php echo $txt->importfilearea; ?>
 265             <table cellpadding="5">
 266                 <tr>
 267                     <td align="right"><?php echo $txt->file; ?>:</td>
 268                     <td><input type="text" name="choosefile" size="50" /></td>
 269                 </tr>
 270
 271                 <tr>
 272                     <td>&nbsp;</td>
 273                     <td><?php  button_to_popup_window ("/files/index.php?id={$course->id}&amp;choose=form.choosefile",
 274                         "coursefiles", $txt->choosefile, 500, 750, $txt->choosefile); ?>
 275                         <input type="submit" name="save" value="<?php echo $txt->importfromthisfile; ?>" /></td>
 276                 </tr>
 277             </table>
 278             <?php
 279             print_simple_box_end(); ?>
 280         </fieldset>
 281     </form>
 282
 283     <?php
 284     print_footer($course);
 285
 286 ?>