CodeIgniter：分页没有问号？

Question

下面的代码使用查询字符串生成分页。但是，没有前导?。所以，我得到这样的信息：http://localhost/index.php/search/&limit=10。 有什么想法吗？

this->load->library('pagination');

$config                   = array();
$config['base_url']       = 'http://localhost/index.php/search/';
$config['total_rows']     = 200;
$config['per_page']       = 10;
$config['num_links']      = 4;

$config['full_tag_open']  = '<ol>';
$config['full_tag_close'] = '</ol>';

$config['first_link']      = 'First';
$config['first_tag_open']  = '<li>';
$config['first_tag_close'] = '</li>';

$config['last_link']      = 'Last';
$config['last_tag_open']  = '<li>';
$config['last_tag_close'] = '</li>';

$config['next_link']      = 'Next';
$config['next_tag_open']  = '<li>';
$config['next_tag_close'] = '</li>';

$config['prev_link']      = 'Previous';
$config['prev_tag_open']  = '<li>';
$config['prev_tag_close'] = '</li>';

$config['cur_tag_open']  = '<li class="active">';
$config['cur_tag_close'] = '</li>';

$config['num_tag_open']  = '<li>';
$config['num_tag_close'] = '</li>';

$this->pagination->initialize($config);
echo ($this->pagination->create_links());

编辑 1：

http://codeigniter.com/forums/viewthread/161263/

编辑 2：

文档似乎表明我所做的应该有效：http://codeigniter.com/user_guide/libraries/pagination.html

$config['page_query_string'] = TRUE;

默认情况下，分页库假定您正在使用 URI 段，并构建您的链接类似于

http://example.com/index.php/test/page/20

如果您将$config['enable_query_strings'] 设置为TRUE，您的链接将使用查询字符串自动重写。此选项也可以显式设置。使用$config['page_query_string']设置为TRUE，分页链接就变成了。

http://example.com/index.php?c=test&m=page&per_page=20

Answer 1

我自己也遇到过。使用查询字符串时，CodeIgniter 必须假设您有其他查询字符串参数（但是，CI 假设您正在使用查询字符串参数来映射您的控制器和方法......）。我喜欢将查询字符串用于过滤结果等内容，同时仍然使用 URI 中的基本路由选项（就像你一样）。

我个人不得不忍受 ?&，但我想你可以像这样扩展分页库（长函数，抱歉）：

class MY_Pagination extends CI_Pagination {
function create_links()
{
    // If our item count or per-page total is zero there is no need to continue.
    if ($this->total_rows == 0 OR $this->per_page == 0)
    {
        return '';
    }

    // Calculate the total number of pages
    $num_pages = ceil($this->total_rows / $this->per_page);

    // Is there only one page? Hm... nothing more to do here then.
    if ($num_pages == 1)
    {
        return '';
    }

    // Determine the current page number.
    $CI =& get_instance();

    if ($CI->config->item('enable_query_strings') === TRUE OR $this->page_query_string === TRUE)
    {
        if ($CI->input->get($this->query_string_segment) != 0)
        {
            $this->cur_page = $CI->input->get($this->query_string_segment);

            // Prep the current page - no funny business!
            $this->cur_page = (int) $this->cur_page;
        }
    }
    else
    {
        if ($CI->uri->segment($this->uri_segment) != 0)
        {
            $this->cur_page = $CI->uri->segment($this->uri_segment);

            // Prep the current page - no funny business!
            $this->cur_page = (int) $this->cur_page;
        }
    }

    $this->num_links = (int)$this->num_links;

    if ($this->num_links < 1)
    {
        show_error('Your number of links must be a positive number.');
    }

    if ( ! is_numeric($this->cur_page))
    {
        $this->cur_page = 0;
    }

    // Is the page number beyond the result range?
    // If so we show the last page
    if ($this->cur_page > $this->total_rows)
    {
        $this->cur_page = ($num_pages - 1) * $this->per_page;
    }

    $uri_page_number = $this->cur_page;
    $this->cur_page = floor(($this->cur_page/$this->per_page) + 1);

    // Calculate the start and end numbers. These determine
    // which number to start and end the digit links with
    $start = (($this->cur_page - $this->num_links) > 0) ? $this->cur_page - ($this->num_links - 1) : 1;
    $end   = (($this->cur_page + $this->num_links) < $num_pages) ? $this->cur_page + $this->num_links : $num_pages;

    // Is pagination being used over GET or POST?  If get, add a per_page query
    // string. If post, add a trailing slash to the base URL if needed
    if ($CI->config->item('enable_query_strings') === TRUE OR $this->page_query_string === TRUE)
    {
        $this->base_url = str_replace('?&amp;', '?', rtrim($this->base_url).'&amp;'.$this->query_string_segment.'=');
    }
    else
    {
        $this->base_url = rtrim($this->base_url, '/') .'/';
    }

    // And here we go...
    $output = '';

    // Render the "First" link
    if  ($this->first_link !== FALSE AND $this->cur_page > ($this->num_links + 1))
    {
        $first_url = ($this->first_url == '') ? $this->base_url : $this->first_url;
        $output .= $this->first_tag_open.'<a '.$this->anchor_class.'href="'.$first_url.'">'.$this->first_link.'</a>'.$this->first_tag_close;
    }

    // Render the "previous" link
    if  ($this->prev_link !== FALSE AND $this->cur_page != 1)
    {
        $i = $uri_page_number - $this->per_page;

        if ($i == 0 && $this->first_url != '')
        {
            $output .= $this->prev_tag_open.'<a '.$this->anchor_class.'href="'.$this->first_url.'">'.$this->prev_link.'</a>'.$this->prev_tag_close;
        }
        else
        {
            $i = ($i == 0) ? '' : $this->prefix.$i.$this->suffix;
            $output .= $this->prev_tag_open.'<a '.$this->anchor_class.'href="'.$this->base_url.$i.'">'.$this->prev_link.'</a>'.$this->prev_tag_close;
        }

    }

    // Render the pages
    if ($this->display_pages !== FALSE)
    {
        // Write the digit links
        for ($loop = $start -1; $loop <= $end; $loop++)
        {
            $i = ($loop * $this->per_page) - $this->per_page;

            if ($i >= 0)
            {
                if ($this->cur_page == $loop)
                {
                    $output .= $this->cur_tag_open.$loop.$this->cur_tag_close; // Current page
                }
                else
                {
                    $n = ($i == 0) ? '' : $i;

                    if ($n == '' && $this->first_url != '')
                    {
                        $output .= $this->num_tag_open.'<a '.$this->anchor_class.'href="'.$this->first_url.'">'.$loop.'</a>'.$this->num_tag_close;
                    }
                    else
                    {
                        $n = ($n == '') ? '' : $this->prefix.$n.$this->suffix;

                        $output .= $this->num_tag_open.'<a '.$this->anchor_class.'href="'.$this->base_url.$n.'">'.$loop.'</a>'.$this->num_tag_close;
                    }
                }
            }
        }
    }

    // Render the "next" link
    if ($this->next_link !== FALSE AND $this->cur_page < $num_pages)
    {
        $output .= $this->next_tag_open.'<a '.$this->anchor_class.'href="'.$this->base_url.$this->prefix.($this->cur_page * $this->per_page).$this->suffix.'">'.$this->next_link.'</a>'.$this->next_tag_close;
    }

    // Render the "Last" link
    if ($this->last_link !== FALSE AND ($this->cur_page + $this->num_links) < $num_pages)
    {
        $i = (($num_pages * $this->per_page) - $this->per_page);
        $output .= $this->last_tag_open.'<a '.$this->anchor_class.'href="'.$this->base_url.$this->prefix.$i.$this->suffix.'">'.$this->last_link.'</a>'.$this->last_tag_close;
    }

    // Kill double slashes.  Note: Sometimes we can end up with a double slash
    // in the penultimate link so we'll kill all double slashes.
    $output = preg_replace("#([^:])//+#", "\\1/", $output);

    // Add the wrapper HTML if exists
    $output = $this->full_tag_open.$output.$this->full_tag_close;

    return $output;
}
}