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   1  <?php // $Id: assignment.class.php,v 1.33.2.5 2008/04/08 03:02:49 scyrma Exp $
   2  
   3  /**
   4   * Extend the base assignment class for assignments where you upload a single file
   5   *
   6   */
   7  class assignment_uploadsingle extends assignment_base {
   8  
   9  
  10      function print_student_answer($userid, $return=false){
  11             global $CFG, $USER;
  12  
  13          $filearea = $this->file_area_name($userid);
  14  
  15          $output = '';
  16  
  17          if ($basedir = $this->file_area($userid)) {
  18              if ($files = get_directory_list($basedir)) {
  19                  require_once($CFG->libdir.'/filelib.php');
  20                  foreach ($files as $key => $file) {
  21  
  22                      $icon = mimeinfo('icon', $file);
  23                      $ffurl = get_file_url("$filearea/$file");
  24  
  25                      //died right here
  26                      //require_once($ffurl);
  27                      $output = '<img src="'.$CFG->pixpath.'/f/'.$icon.'" class="icon" alt="'.$icon.'" />'.
  28                              '<a href="'.$ffurl.'" >'.$file.'</a><br />';
  29                  }
  30              }
  31          }
  32  
  33          $output = '<div class="files">'.$output.'</div>';
  34          return $output;
  35      }
  36  
  37      function assignment_uploadsingle($cmid='staticonly', $assignment=NULL, $cm=NULL, $course=NULL) {
  38          parent::assignment_base($cmid, $assignment, $cm, $course);
  39          $this->type = 'uploadsingle';
  40      }
  41  
  42      function view() {
  43  
  44          global $USER;
  45  
  46          $context = get_context_instance(CONTEXT_MODULE,$this->cm->id);
  47          require_capability('mod/assignment:view', $context);
  48  
  49          add_to_log($this->course->id, "assignment", "view", "view.php?id={$this->cm->id}", $this->assignment->id, $this->cm->id);
  50  
  51          $this->view_header();
  52  
  53          $this->view_intro();
  54  
  55          $this->view_dates();
  56  
  57          $filecount = $this->count_user_files($USER->id);
  58  
  59          if ($submission = $this->get_submission()) {
  60              if ($submission->timemarked) {
  61                  $this->view_feedback();
  62              }
  63              if ($filecount) {
  64                  print_simple_box($this->print_user_files($USER->id, true), 'center');
  65              }
  66          }
  67  
  68          if (has_capability('mod/assignment:submit', $context)  && $this->isopen() && (!$filecount || $this->assignment->resubmit || !$submission->timemarked)) {
  69              $this->view_upload_form();
  70          }
  71  
  72          $this->view_footer();
  73      }
  74  
  75  
  76      function view_upload_form() {
  77          global $CFG;
  78          $struploadafile = get_string("uploadafile");
  79  
  80          $maxbytes = $this->assignment->maxbytes == 0 ? $this->course->maxbytes : $this->assignment->maxbytes;
  81          $strmaxsize = get_string('maxsize', '', display_size($maxbytes));
  82  
  83          echo '<div style="text-align:center">';
  84          echo '<form enctype="multipart/form-data" method="post" '.
  85               "action=\"$CFG->wwwroot/mod/assignment/upload.php\">";
  86          echo '<fieldset class="invisiblefieldset">';
  87          echo "<p>$struploadafile ($strmaxsize)</p>";
  88          echo '<input type="hidden" name="id" value="'.$this->cm->id.'" />';
  89          require_once($CFG->libdir.'/uploadlib.php');
  90          upload_print_form_fragment(1,array('newfile'),false,null,0,$this->assignment->maxbytes,false);
  91          echo '<input type="submit" name="save" value="'.get_string('uploadthisfile').'" />';
  92          echo '</fieldset>';
  93          echo '</form>';
  94          echo '</div>';
  95      }
  96  
  97  
  98      function upload() {
  99  
 100          global $CFG, $USER;
 101  
 102          require_capability('mod/assignment:submit', get_context_instance(CONTEXT_MODULE, $this->cm->id));
 103  
 104          $this->view_header(get_string('upload'));
 105  
 106          $filecount = $this->count_user_files($USER->id);
 107          $submission = $this->get_submission($USER->id);
 108          if ($this->isopen() && (!$filecount || $this->assignment->resubmit || !$submission->timemarked)) {
 109              if ($submission = $this->get_submission($USER->id)) {
 110                  //TODO: change later to ">= 0", to prevent resubmission when graded 0
 111                  if (($submission->grade > 0) and !$this->assignment->resubmit) {
 112                      notify(get_string('alreadygraded', 'assignment'));
 113                  }
 114              }
 115  
 116              $dir = $this->file_area_name($USER->id);
 117  
 118              require_once($CFG->dirroot.'/lib/uploadlib.php');
 119              $um = new upload_manager('newfile',true,false,$this->course,false,$this->assignment->maxbytes);
 120              if ($um->process_file_uploads($dir)) {
 121                  $newfile_name = $um->get_new_filename();
 122                  if ($submission) {
 123                      $submission->timemodified = time();
 124                      $submission->numfiles     = 1;
 125                      $submission->submissioncomment = addslashes($submission->submissioncomment);
 126                      unset($submission->data1);  // Don't need to update this.
 127                      unset($submission->data2);  // Don't need to update this.
 128                      if (update_record("assignment_submissions", $submission)) {
 129                          add_to_log($this->course->id, 'assignment', 'upload',
 130                                  'view.php?a='.$this->assignment->id, $this->assignment->id, $this->cm->id);
 131                          $submission = $this->get_submission($USER->id);
 132                          $this->update_grade($submission);
 133                          $this->email_teachers($submission);
 134                          print_heading(get_string('uploadedfile'));
 135                      } else {
 136                          notify(get_string("uploadfailnoupdate", "assignment"));
 137                      }
 138                  } else {
 139                      $newsubmission = $this->prepare_new_submission($USER->id);
 140                      $newsubmission->timemodified = time();
 141                      $newsubmission->numfiles = 1;
 142                      if (insert_record('assignment_submissions', $newsubmission)) {
 143                          add_to_log($this->course->id, 'assignment', 'upload',
 144                                  'view.php?a='.$this->assignment->id, $this->assignment->id, $this->cm->id);
 145                          $submission = $this->get_submission($USER->id);
 146                          $this->update_grade($submission);
 147                          $this->email_teachers($newsubmission);
 148                          print_heading(get_string('uploadedfile'));
 149                      } else {
 150                          notify(get_string("uploadnotregistered", "assignment", $newfile_name) );
 151                      }
 152                  }
 153              }
 154          } else {
 155              notify(get_string("uploaderror", "assignment")); //submitting not allowed!
 156          }
 157  
 158          print_continue('view.php?id='.$this->cm->id);
 159  
 160          $this->view_footer();
 161      }
 162  
 163      function setup_elements(&$mform) {
 164          global $CFG, $COURSE;
 165  
 166          $ynoptions = array( 0 => get_string('no'), 1 => get_string('yes'));
 167  
 168          $mform->addElement('select', 'resubmit', get_string("allowresubmit", "assignment"), $ynoptions);
 169          $mform->setHelpButton('resubmit', array('resubmit', get_string('allowresubmit', 'assignment'), 'assignment'));
 170          $mform->setDefault('resubmit', 0);
 171  
 172          $mform->addElement('select', 'emailteachers', get_string("emailteachers", "assignment"), $ynoptions);
 173          $mform->setHelpButton('emailteachers', array('emailteachers', get_string('emailteachers', 'assignment'), 'assignment'));
 174          $mform->setDefault('emailteachers', 0);
 175  
 176          $choices = get_max_upload_sizes($CFG->maxbytes, $COURSE->maxbytes);
 177          $choices[0] = get_string('courseuploadlimit') . ' ('.display_size($COURSE->maxbytes).')';
 178          $mform->addElement('select', 'maxbytes', get_string('maximumsize', 'assignment'), $choices);
 179          $mform->setDefault('maxbytes', $CFG->assignment_maxbytes);
 180  
 181      }
 182  
 183  }
 184  
 185  ?>