<?php
/**
*417 add 主要是实现ajax分页
**/
class MY_Pagination extends CI_Pagination{
public function __construct()
{
parent::__construct();
} /**
* Generate the pagination links
*
* @access public
* @return string
*/
function create_ajax_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 '';
} // Set the base page index for starting page number
if ($this->use_page_numbers)
{
$base_page = 1;
}
else
{
$base_page = 0;
} // 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) != $base_page)
{
$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) != $base_page)
{
$this->cur_page = $CI->uri->segment($this->uri_segment); // Prep the current page - no funny business!
$this->cur_page = (int) $this->cur_page;
}
} // Set current page to 1 if using page numbers instead of offset
if ($this->use_page_numbers AND $this->cur_page == 0)
{
$this->cur_page = $base_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 = $base_page;
} // Is the page number beyond the result range?
// If so we show the last page
if ($this->use_page_numbers)
{
if ($this->cur_page > $num_pages)
{
$this->cur_page = $num_pages;
}
}
else
{
if ($this->cur_page > $this->total_rows)
{
$this->cur_page = ($num_pages - 1) * $this->per_page;
}
} $uri_page_number = $this->cur_page; if ( ! $this->use_page_numbers)
{
$this->cur_page = floor(($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)
{
$this->base_url = rtrim($this->base_url).'&'.$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 .= $this->first_tag_open.'<a '." onclick='ajax_page(0);return false;'".$this->anchor_class.'href="javascript:void(0)">'.$this->first_link.'</a>'.$this->first_tag_close;
} // Render the "previous" link
if ($this->prev_link !== FALSE AND $this->cur_page != 1)
{
if ($this->use_page_numbers)
{
$i = $uri_page_number - 1;
}
else
{
$i = $uri_page_number - $this->per_page;
} if ($i == 0 && $this->first_url != '')
{
$output .= $this->prev_tag_open.'<a '." onclick='ajax_page(0);return false;'".$this->anchor_class.'href="javascript:void(0)">'.$this->prev_link.'</a>'.$this->prev_tag_close;
}
else
{
$i = ($i == 0) ? '' : $this->prefix.$i.$this->suffix;
$output .= $this->prev_tag_open.'<a '." onclick='ajax_page({$i});return false;'".$this->anchor_class.'href="javascript:void(0)">'.$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; $loop++)
{
if ($this->use_page_numbers)
{
$i = $loop;
}
else
{
$i = ($loop * $this->per_page) - $this->per_page;
} if ($i >= $base_page)
{
if ($this->cur_page == $loop)
{
$output .= $this->cur_tag_open.$loop.$this->cur_tag_close; // Current page
}
else
{
$n = ($i == $base_page) ? '' : $i; if ($n == '' && $this->first_url != '')
{
$output .= $this->num_tag_open.'<a '." onclick='ajax_page(0);return false;'".$this->anchor_class.'href="javascript:void(0)">'.$loop.'</a>'.$this->num_tag_close;
}
else
{
$n = ($n == '') ? '' : $this->prefix.$n.$this->suffix; $output .= $this->num_tag_open.'<a '." onclick='ajax_page({$n});return false;'".$this->anchor_class.'href="javascript:void(0)">'.$loop.'</a>'.$this->num_tag_close;
}
}
}
}
} // Render the "next" link
if ($this->next_link !== FALSE AND $this->cur_page < $num_pages)
{
if ($this->use_page_numbers)
{
$i = $this->cur_page + 1;
}
else
{
$i = ($this->cur_page * $this->per_page);
}
$ajax_p = $this->prefix.$i.$this->suffix;
$output .= $this->next_tag_open.'<a '." onclick='ajax_page({$ajax_p});return false;'".$this->anchor_class.'href="javascript:void(0)">'.$this->next_link.'</a>'.$this->next_tag_close;
} // Render the "Last" link
if ($this->last_link !== FALSE AND ($this->cur_page + $this->num_links) < $num_pages)
{
if ($this->use_page_numbers)
{
$i = $num_pages;
}
else
{
$i = (($num_pages * $this->per_page) - $this->per_page);
}
$ajax_p = $this->prefix.$i.$this->suffix;
$output .= $this->last_tag_open.'<a '." onclick='ajax_page({$ajax_p});'". $this->anchor_class.'href="javascript:void(0)">'.$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 $output;
}
}
然后我们会在controller中来调用这个方法，代码如下
public function show_tpl($page=1){
//配置分页类
$config['base_url'] = '/wechat_msg_template/send_message';
$config['per_page'] = 10;
$config['uri_segment'] = 3;
$data['page_total'] = $config['total_rows'] = $this->wechat_msg_template_model->msg_template_list(); //为页总数
$config['cur_tag_open'] = '<a class="current">';
$config['cur_tag_close'] = '</a>';
$config['first_link'] = '«';
$config['last_link'] = '»';
//获取分页
$this->pagination->initialize($config);
$data['page'] = $this->pagination->create_ajax_links();
if(!empty($data['page'])){
}
$data['power_language']= $this->config->item('power_language');
$data['top_item'] = 'msg_template_manage';
$data['item'] = 'wechat_msg_template';
$list_result = $this->wechat_msg_template_model->msg_template_list(10,intval($this->uri->segment(3))); //结果
$data['result'] = $list_result;
$this->load->view('show_tpl',$data);
}
最后我们通过ajax 来调用 show_tpl 加载数据，达到无刷分页
javascript 代码如下：
function ajax_page(page){
if(page=='' || page==null || page==undefined){
page = '';
}
content = '';
$.ajax({
type:'GET',
url:"/wechat_msg_template/show_tpl/"+page,
async:false,
success:function(data){
content = data;
}
});
$(".tab1_class").html('');
$(".tab1_class").html(content);
return false;
}