如何配置分頁codeigniter？

Question

我試圖用CodeIgniter進行分頁，根據Codeigniter的手冊應該這么簡單，即使在這個例子中也是這樣的

«首先<1 2 3 4 5>最后»

$config['total_rows'] = $this->searchdesc_model->queryallrows();
$config['per_page'] = '10';
$config['uri_segment'] =4;
$config['full_tag_open'] = '<p>';
$config['full_tag_close'] = '</p>';
$config['cur_tag_open'] = '<b>';
$config['cur_tag_close'] = '</b>';
$config['first_link'] = 'First';
$config['last_link'] = 'Last';
$config['last_tag_open'] = '<p>';
$config['last_tag_close'] = '</p>'

$this->load->library('Company_Creation');

在視圖中我只稱它為pagination-> create_links（）; ？>（或者當我從控制器調用它時，我通過視圖發送它，但我只能得到它

1 2 3>

並且沒有辦法使它看起來像exmaple，可能聽起來如此虛擬但是，任何人都可以幫助我嗎？ 或者有類似的問題？

謝謝

編輯1

$config['total_rows'] = $this->searchdesc_model->queryallrows();
$config['per_page'] = '5';
$config['uri_segment'] =4;
$config['full_tag_open'] = '<p>';
$config['full_tag_close'] = '</p>';
$config['cur_tag_open'] = '<b>';
$config['cur_tag_close'] = '</b>';
$config['first_link'] = ' First';
$config['last_link'] = ' Last';
$config['last_tag_open'] = '<p>';
$config['last_tag_close'] = '</p>';
$config['next_link'] = '';
$config['next_tag_open'] = '<p id="nextbutton" style="padding-left:5px;">';
$config['next_tag_close'] = '</p>';
$config['prev_link'] = '';
$config['prev_tag_open'] = '<p id="prevbutton" style="padding-right:5px;">';
$config['prev_tag_close'] = '</p>';
$config['num_links']=4;
$data['retorno'] = $this->searchdesc_model->queryalldb($config['per_page'],$this->uri->segment(4,0));
$config['total_rows']=1000;
$this->pagination->initialize($config);

我根據我收到的一些建議做了這個，就像你說的那樣，當它有很多數據時它仍然很好，我仍然喜歡一直顯示第一個和下一個按鈕，我在查詢后設置了total_rows（我用正確的行數調用） ），我之前也嘗試過，結果是一樣的，我還需要只顯示4個數字，而且我正在嘮叨numb_links ...仍然無法工作（我不知道為什么Ci文檔說應該工作..）任何想法？

謝謝！

Answer 1

生成示例顯示的內容實際上非常簡單。 您只需要擴展Pagination的庫以適應這一點。 我能夠做到這一點。 無論您顯示多少頁面，它仍會顯示第一頁，最后一頁，后箭頭和前進箭頭。

如果您想要隨時向前顯示5個頁面，那么您需要有很多結果來填充該頁面。 然后在第3頁num_links設置為您希望之前和之后的內容。 所以它將是2.如果您在第一頁上我的更改使其在適用后顯示4頁。 見下圖。 白色是當前頁面。 綠色是可用的頁面。

希望我已經正確解釋了一切，這對你有用。 讓我知道。

調節器

  $this->pagingConfig = array();
  $this->pagingConfig['base_url'] = 'URL';
  $this->pagingConfig['total_rows'] = 0;//TOTAL ROWS
  $this->pagingConfig['cur_page'] = 0;//CURRENT PAGE NUMBER
  $this->pagingConfig['per_page'] = 0;//YOUR RESULTS PER PAGE
  $this->pagingConfig['num_links'] = 2;//NUMBER OF LINKS BEFORE AND AFTER CURRENT PAGE IF ON PAGE ONE WILL SHOW 4 PAGES AFTERWARDS IF YOU HAVE ENOUGH RESULTS TO FILL THAT MANY
  $this->pagingConfig['first_link'] = "<< First";
  $this->pagingConfig['last_link'] = "Last >>";
  $this->pagingConfig['full_tag_open'] = "<div class='pagination'>";
  $this->pagingConfig['full_tag_close'] = "</div>";
  $this->pagingConfig['last_tag_open'] = "";
  $this->pagingConfig['first_tag_close'] = "";
  $this->pagingConfig['anchor_class'] = "page";
  $this->pagination->initialize($this->pagingConfig);
  $strPaging = $this->pagination->create_links();

擴展的分頁圖書館電話

function create_links()
{
  // EDIT: ADDED THIS BECAUSE COULDN'T SEEM TO SET THIS ANYWHERE ELSE
  if ($this->anchor_class != '')
  {
     $this->anchor_class = 'class="'.$this->anchor_class.'" ';
  }

  // 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 = 1;
  }

  // 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);
  }

  // EDIT: DON'T NEED THIS THE WAY I'VE CHANGED IT
  // $uri_page_number = $this->cur_page;
  // $this->cur_page = floor(($this->cur_page/$this->per_page) + 1);

  // EDIT: START OF MODIFIED START AND END TO WORK HOW I WANT
  $totalLinks = ($this->num_links*2)+1;
  if($totalLinks > ($this->total_rows/$this->per_page))
  {
     $totalLinks = ceil($this->total_rows/$this->per_page);
  }
  //first page
  if($this->cur_page == 1)
  {
     $start = 1;
     $end = $start + $totalLinks - 1;
  }
  //middle pages
  elseif($this->cur_page + $this->num_links <= $num_pages && $this->cur_page - $this->num_links > 0)
  {
     $start = $this->cur_page - $this->num_links;
     $end = $this->cur_page + $this->num_links;
  }
  //last couple of pages
  elseif(($this->cur_page + $totalLinks) > $num_pages)
  {
     $start = $num_pages - $totalLinks + 1;
     $end = $num_pages;
     //check to see if this is in the first half of links so it doesn't jump the paging
     if($this->cur_page <= $this->num_links)
     {
        $start = 1;
        $end = $start + $totalLinks - 1;
     }
  }
  //first couple of pages
  elseif(($this->cur_page - $totalLinks) < 1)
  {
     $start = 1;
     $end = $start + $totalLinks - 1;
  }
  // EDIT: END OF MODIFIED START AND END TO WORK HOW I WANT

  // EDIT: CODEIGNITERS BASE PAGING SETUP SEE ABOVE FOR MY CHANGES
  // $start = (($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)
  {
     $this->base_url = rtrim($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
  // EDIT: CHANGED TO ALWAYS SHOW FIRST LINK AT LEAST
  if  ($this->first_link !== FALSE AND $this->cur_page != 1)
  {
     $first_url = ($this->first_url == '') ? $this->base_url."1" : $this->first_url;
     $output .= $this->first_tag_open.'<a '.$this->anchor_class.'href="'.$first_url.'">'.$this->first_link.'</a>'.$this->first_tag_close;
  }
  else
  {
     $output .= $this->cur_tag_open.$this->first_link.$this->cur_tag_close;
  }

  // Render the "previous" link
  // EDIT: CHANGED TO ALWAYS SHOW PREVIOUS LINK AT LEAST
  if  ($this->prev_link !== FALSE AND $this->cur_page != 1)
  {
     $i = $this->cur_page-1;

     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;
     }

  }
  else
  {
     $output .= $this->cur_tag_open.$this->prev_link.$this->cur_tag_close;
  }

  // EDIT: CHANGED THIS TO ALWAYS SHOW ALL LINKS WANTED EVEN IF ON FIRST PAGE
  // Render the pages
  if ($this->display_pages !== FALSE)
  {
     // Write the digit links
     for ($loop = $start; $loop <= $end; $loop++)
     {
        // EDIT: DON'T NEED THIS THE WAY I'VE CHANGED IT
        // $i = ($loop * $this->per_page) - $this->per_page;

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

              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
  // EDIT: CHANGED TO ALWAYS SHOW NEXT LINK AT LEAST
  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.($this->cur_page+1).$this->suffix.'">'.$this->next_link.'</a>'.$this->next_tag_close;
  }
  else
  {
     $output .= $this->cur_tag_open.$this->next_link.$this->cur_tag_close;
  }

  // Render the "Last" link
  // EDIT: CHANGED TO ALWAYS SHOW LAST LINK AT LEAST
  if ($this->last_link !== FALSE AND $this->cur_page != $num_pages)
  {
     $i = (($num_pages));
     $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;
  }
  else
  {
     $output .= $this->cur_tag_open.$this->last_link.$this->cur_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;
}

Answer 2

得到1 2 3 >而不是« First < 1 2 3 4 5 > Last »的唯一原因是你的結果中沒有足夠的行來生成超過3頁。

• 如果您不需要它們，則默認情況下不會顯示“第一個”和“最后一個”鏈接。 從文檔的例子中不太清楚。

• 在您超過第1頁之前，您將不會獲得“上一頁”鏈接，該示例實際上是在第3頁（“3”為粗體）。

• 由於您在配置中提供自己的模板而不是使用默認值，因此實際結果會略有不同。

如果您想進行快速測試以查看更多鏈接，只需將per_page減少到較低的數字或在total_rows包含更多行。 顯示的鏈接總數也可以使用num_links配置。

Answer 3

對於那些使用PostgreSql開發CI應用程序並且無法理解為什么分頁限制+偏移量工作“奇怪”的人：

C ontroller：

...
$offset = ($page-1)*$config["per_page"];
$this->reporting_model->some_fetch_method($id, $config["per_page"], $offset);
...

M odel：

...
$this->db->limit($limit_perpage, $offset);
$this->db->where("id",   $id);
$this->db->get('some_table');
...