vidok.com/admin/templates/update/main-view.php

<? global $db; ob_start();?>
<?= \Html::form_text( [
                'label' => 'Twoja wersja systemu',
                'id'    => 'ver',
                'text'  => $this -> ver
              ] );?>
<?= \Html::form_text( [
                'label' => 'Aktualna wersja systemu',
                'text'  => $this -> new_ver,
                'id'    => 'new_ver'
              ] );?>
<?
  $ver_new  = $this -> new_ver;
  $ver      = $this -> ver;
  $valuemax = ( $ver_new - $ver ) * 1000;
?>
<div class="progress-box hidden">
  <div class="version">
    <h3> Aktualizacja <p class="version_curent">0</p> / <p class="version_diff">0</p></h3>
  </div>
  <div class="progress ">
    <div class="progress-bar progress-bar-info progress-bar-striped active" role="progressbar" accesskey=""aria-valuenow="" aria-valuemin="0" aria-valuemax="<?= $valuemax?>" style="width:"></div>
  </div>
</div>
<div class="row">
<? if ( $this -> ver < $this -> new_ver ):?>
    <div class="form-group col-lg-6 text-right">
      <div class="">
        <a href="#" class="btn btn-system btn-sm mb5" id="confirm">Aktualizuj do wyższej wersji</a>
      </div>
    </div>
<? endif;?>
<? if ( $this -> ver < $this -> new_ver ):?>
    <div class="form-group col-lg-6">
      <div class="">
        <a href="#" class="btn btn-system btn-sm mb5" id="confirmUpdateAll">Aktualizuj do najwyższej wersji</a>
      </div>
    </div>
<? endif;?>
</div>
<? if ( $this -> ver < $this -> new_ver ):?>
  <div class="text-danger text-center">* Przed aktualizacją systemu zalecane jest wykonanie pełnej kopii zapasowej.</div>
  <div class="clear"></div>
<? endif;?>
<?
$out = ob_get_clean();

$grid                    = new \gridEdit;
$grid -> id              = 'update-view';
$grid -> gdb_opt         = $gdb;
$grid -> include_plugins = true;
$grid -> title           = 'Aktualizacja systemu';
$grid -> default_buttons = false;
$grid -> external_code   = $out;
echo $grid -> draw();
?>
<?
ob_start();
echo $versions = file_get_contents( 'http://www.cmspro.project-dc.pl/updates/changelog.php' );
$out = ob_get_clean();

$grid                    = new \gridEdit;
$grid -> id              = 'changelog';
$grid -> gdb_opt         = $gdb;
$grid -> include_plugins = true;
$grid -> title           = 'Changelog';
$grid -> default_buttons = false;
$grid -> external_code   = $out;
echo $grid -> draw();
?>
<script type="text/javascript">
  var version_current = <?= $this -> ver;?>;
  var version_new = <?= $this -> new_ver;?>;
  var version_diff = Math.round((version_new - version_current) * 1000);
  var width = 0;
  var ac_lp = 0;
  $(document).ready(function ()
  {
    $('body').on('click', '#confirm', function ()
    {
      $.prompt('Na pewno chcesz dokonać aktualizacji systemu?',
              {
                title: 'Potwierdź?',
                submit: function (e, v, m, f)
                {
                  if (v == true)
                    document.location.href = '/admin/update/update/';
                },
                buttons: {
                  'tak': true, 'nie': false
                },
                focus: 1
              });
    });

    $('body').on('click', '#confirmUpdateAll', function ()
    {
      $.prompt('Na pewno chcesz dokonać aktualizacji systemu?',
              {
                title: 'Potwierdź?',
                submit: function (e, v, m, f)
                {
                  if (v == true)
                  {
                    $('.progress-box').removeClass('hidden');
                    $('#confirm').css('pointer-events', 'none');
                    $('#confirmUpdateAll').css('pointer-events', 'none');
                    $('.version_diff').html(version_diff);
                    updateAll(version_current, version_new, version_diff, width, ac_lp);
                  }
                },
                buttons: {
                  'tak': true, 'nie': false
                }
              });
    });
  });

  function updateAll(version_current, version_new, version_diff, width, ac_lp)
  {
    $.ajax(
            {
              url: '/admin/update/updateAll/',
              type: 'POST',
              data:
                      {
                        version_current: version_current
                      },
              success: function (data)
              {
                response = jQuery.parseJSON(data);
                if (response.status == true)
                {
                  ac_lp = ac_lp + 1;
                  $('.version_curent').html(ac_lp);
                  width = width + ((1 / version_diff) * 100);
                  $('.progress-bar').attr("style", "width:" + width + "%");
                  if (response.version < version_new)
                  {
                    updateAll(response.version, version_new, version_diff, width, ac_lp);
                  } else
                  {
                    $.prompt("Aktualizacja przebiegła pomyślnie.",
                            {
                              title: 'Informacja',
                              close: function (e, v, m, f) {
                                window.location.href = "/admin/update/main_view/";
                              }
                            });
                  }
                } else
                {
                  $.prompt("W trakcie aktualizacji systemu wystąpił błąd. Proszę spróbować ponownie.",
                          {
                            title: 'Błąd',
                            close: function (e, v, m, f) {
                              window.location.href = "/admin/update/main_view/";
                            }
                          });
                }
              }
            }
    );
  };
</script>