You are here

Home » API reference » Certificate 6.2 » certificate.pages.inc

function certificate_single in Certificate 6.2

Same name and namespace in other branches
  1. 8.3 certificate.pages.inc \certificate_single()
  2. 6 certificate.pages.inc \certificate_single()
  3. 7.3 certificate.pages.inc \certificate_single()
  4. 7.2 certificate.pages.inc \certificate_single()
  5. 3.x certificate.pages.inc \certificate_single()

Generate a single certificate.

Check to see if user already has a certificate for a course. If so, serve it from the DB. If not, generate one and save it to the DB.

1 call to certificate_single()
certificate_node_certificate in ./certificate.pages.inc
Get certificate for a specific node.

File

./certificate.pages.inc, line 40
certificate.pages.inc Functions for generating certificates.

Code

function certificate_single($account, $node) {
  global $user;
  $output = '';

  // Preview.
  $preview = isset($_GET['preview']) && user_access('administer certificates');

  // See if user already has a snapshotted certificate for a course. If so, grab
  // from the DB. If not, generate a new one.
  if (variable_get('certificate_snapshots', 0) && ($snapshot = certificate_snapshot_load($account, $node))) {
    $output = $snapshot['snapshot'];
  }
  else {
    $hooks = module_invoke_all('certificate_map_options');
    $sql = "select * from {certificate_node} where nid = %d or nid = %d order by nid asc";
    $result = db_query($sql, 0, $node->nid);
    $mapping = array();
    while ($row = db_fetch_object($result)) {
      $mapping[$row->mapper][$row->type] = $row->template;
    }
    foreach (array_keys($hooks) as $map_type) {
      if (!empty($mapping[$map_type])) {
        $matches = module_invoke_all('certificate_map', $node, $user, $map_type, array_keys(array_filter((array) $mapping[$map_type])), array());
        if (count($matches)) {
          $template_id = $mapping[$map_type][$matches[0]];

          // First one for now.
        }
      }
    }
    drupal_alter('certificate_template_id', $template_id, $node, $account);
    $template = node_load($template_id);
    if ($template && $node) {

      // Prepend output with UTF 8 meta tag.
      // See http://code.google.com/p/wkhtmltopdf/issues/detail?id=556
      // Print module gets around this because the meta tag in Drupal is already
      // set - but here, we have to add it since we are only delivering the node
      // body.
      $output = '<html><head><meta charset="utf-8"/></head><body>' . theme('certificate_certificate', $node, $account, $template) . '</body></html>';

      // Now save this generated certificate as a 'snapshot' in the database.
      $snapshot['uid'] = $account->uid;
      $snapshot['nid'] = $node->nid;
      $date = getdate();
      $snapshot['date'] = $date[0];
      $snapshot['snapshot'] = $output;
      if (!$preview) {
        certificate_snapshot_save($snapshot);
      }
    }
    else {
      return t('Sorry, there is no certificate available.');
    }
  }
  $print_pdf_pdf_tool = variable_get('print_pdf_pdf_tool', '');
  if ($print_pdf_pdf_tool == '') {
    if ($user->uid == 1) {
      drupal_set_message('Certificate cannot be displayed because you have not selected a PDF generation tool in !link.', array(
        '!link' => l('Printer, e-mail and PDF versions', 'admin/settings/print/pdf') . '.',
        'error',
      ));
    }
    else {
      drupal_set_message('PDF generation tool is not configured.');
    }
    return ' ';
  }
  module_load_include('pages.inc', 'print_pdf', 'print_pdf');
  if ($preview) {
    print $output;
  }
  else {

    // Rewrite image URLs using Print.
    $pattern = '!<(img\\s[^>]*?)>!is';
    $output = preg_replace_callback($pattern, '_print_rewrite_urls', $output);
    global $conf;
    $conf['print_pdf_page_orientation'] = $template->certificate['orientation'];
    print_pdf_generate_html(array(
      'node' => $node,
    ), $output, $node->title . '.pdf');
  }
}