codeigniter实现ajax分页
<?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; }
