Question

我需要在我的搜索页面上有一个选项，允许用户选择他们想要在视图中显示的结果数，即25个结果，每页50个，100个结果。我的theme_pager代码是

function theme_pager($tags = array(), $limit = 10, $element = 0, $parameters = array(), $quantity = 9) {
  global $pager_page_array, $pager_total;
  $tags = array("", "< prev", "", "next >", "");

    // Calculate various markers within this pager piece:
    // Middle is used to "center" pages around the current page.
    $ pager_middle = ceil($quantity / 2);
    // current is the page we are currently paged to
    $pager_current = $pager_page_array[$element] + 1;
    // first is the first page listed by this pager piece (re quantity)
    $pager_first = $pager_current - $pager_middle + 1;
    // last is the last page listed by this pager piece (re quantity)
    $pager_last = $pager_current + $quantity - $pager_middle;
    // max is the maximum page number
    $pager_max = $pager_total[$element];
    // End of marker calculations.

    // Prepare for generation loop.
    $i = $pager_first;
    if ($pager_last > $pager_max) {
      // Adjust "center" if at end of query.
    $i = $i + ($pager_max - $pager_last);
    $pager_last = $pager_max;
    }
    if ($i <= 0) {
      // Adjust "center" if at start of query.
    $pager_last = $pager_last + (1 - $i);
    $i = 1;
    }
    // End of generation loop preparation.
    $view = views_get_current_view();

    // ensure view exists
    if (!$view) return;

    // set object property to return total rows  
    $view->get_total_rows = true;



    // set display_id
    $view->set_display($display_id);

    // execute view
    $view->execute();

    // acquire data from views object and $_REQUEST    
    $itemsPerPage = $view->pager['items_per_page'];
    $currentPage = $_REQUEST['page']+1;
    $total = $view->total_rows;

    // start calculation    
    $start = ($itemsPerPage * $currentPage) - ($itemsPerPage-1);
    $end = $itemsPerPage * $currentPage;

    if ($end>$total) $end = $total;

    // return html
    $x =  "<b>Displaying $start - $end of $total</b>";
    $li_previous = theme('pager_previous', (isset($tags[1]) ? $tags[1] : t('‹ previous')), $limit,    $element, 1, $parameters);
    $li_next = theme('pager_next', (isset($tags[3]) ? $tags[3] : t('next ›')), $limit, $element, 1, $parameters);

     if ($pager_total[$element] > 1) {
     $items[] = array(
                                 'class' => 'pager',
                                 'data' => $x,
                                );
      if ($li_previous) {


      $items[] = array(
        'class' => 'pager-previous',
        'data' => $li_previous,
      );
    }

    // When there is more than one page, create the pager list.
    if ($i != $pager_max) {
      // Now generate the actual pager piece.
      for (; $i <= $pager_last && $i <= $pager_max; $i++) {
        if ($i < $pager_current) {
                     if ($pager_first > 1 && $i == $pager_first) {
                                               $output = '...'.$i;
                                               $stopPreEllipsis = true;
                                } else {
                                               $output = $i;
                                }
          $items[] = array(
            'class' => 'pager-item',
            'data' => theme('pager_previous', $output, $limit, $element, ($pager_current - $i), $parameters),
          );
        }
        if ($i == $pager_current) {

          $items[] = array(
            'class' => 'pager-current',
            'data' => $i,
          );
        }
        if ($i > $pager_current) {

                     if ($pager_last < $pager_max && $i == $pager_last) {
                                               $output = $i.'...';
                                } else {
                                               $output = $i;
                                }

          $items[] = array(
            'class' => 'pager-item',
            'data' => theme('pager_next', $output, $limit, $element, ($i - $pager_current), $parameters),
          );

        }
      }
    }
    // End generation.
    if ($li_next) {
      $items[] = array(
        'class' => 'pager-next',
        'data' => $li_next,
      );
    }
     return theme('item_list', $items, NULL, 'ul', array('class' => 'pager'));
   }
 }

Answer 1

您可能已经注意到，theme_pager不会调用数据库，它只显示数据库中的项目。它甚至不会呈现被分页的列表中的项目。

因此，您需要在传入pager_query()之前覆盖金额。有了观点，我不知道。在自定义模块中，它非常简单：读出url参数或POSTed变量，并将其作为第二个参数传递到pager_query()。我怀疑视图有一些钩子来覆盖运行时的每页量，就在它传递给查询构建器之前。但由于观点记录不佳，不容易找到。

更改drupal视图中每页的结果数

1 个答案: