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| Show recent Google Reader shared items in your Facebook Wall Posted: 25 Apr 2009 06:18 AM PDT
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| Posted: 25 Apr 2009 05:03 AM PDT I extended CodeIgniter’s Pagination Class to add a function that creates ajaxified pagination links that, unlike its First, I created a file named application/libraries/MY_Pagination.php and declared it with class MY_Pagination extends CI_Pagination { } You’ll notice that I extended the parent class $config['subclass_prefix'] = 'MY_'; DO NOT use ‘CI_’ as your prefix because all native CodeIgniter libraries use it. I simply copied the Then I modified the lines that render the links: Modified the “First” link from
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Modified the “Previous” link from
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Modified the digit links from
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Modified the “Next” link from
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Modified the “Last” link from
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Load the library in your Controller similar to how you load other libraries. Note that you’re NOT supposed to include the prefix. $this->load->library('pagination'); Once loaded, you can call your new function like $this->pagination->create_ajax_links('targetElement'); You’ll notice that I used jQuery here (see the For the benefit of the lazy, here’s the entire MY_Pagination library: <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * @author Randell Benavidez */ class MY_Pagination extends CI_Pagination { /** * Generate the pagination links that load pages asynchronously * * @param string $target * @access public * @return string */ function create_ajax_links($target) { // 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) { $this->base_url = rtrim($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->cur_page > ($this->num_links + 1)) { $output .= $this->first_tag_open.'<a href="#" onclick="$('#'.$target.'').load(''.$this->base_url.'');">'.$this->first_link.'</a>'.$this->first_tag_close; } // Render the "previous" link if ($this->cur_page != 1) { $i = $uri_page_number - $this->per_page; if ($i == 0) $i = ''; $output .= $this->prev_tag_open.'<a href="#" onclick="$('#'.$target.'').load(''.$this->base_url.$i.'');">'.$this->prev_link.'</a>'.$this->prev_tag_close; } // Write the digit links for ($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; $output .= $this->num_tag_open.'<a href="#" onclick="$('#'.$target.'').load(''.$this->base_url.$n.'');">'.$loop.'</a>'.$this->num_tag_close; } } } // Render the "next" link if ($this->cur_page < $num_pages) { $output .= $this->next_tag_open.'<a href="#" onclick="$('#'.$target.'').load(''.$this->base_url.($this->cur_page * $this->per_page).'');">'.$this->next_link.'</a>'.$this->next_tag_close; } // Render the "Last" link if (($this->cur_page + $this->num_links) < $num_pages) { $i = (($num_pages * $this->per_page) - $this->per_page); $output .= $this->last_tag_open.'<a href="#" onclick="$('#'.$target.'').load(''.$this->base_url.$i.'');">'.$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; } } // END MY_Pagination Class /* End of file MY_Pagination.php */ /* Location: ./system/application/libraries/MY_Pagination.php */ |
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