233 lines
9.9 KiB
HTML
233 lines
9.9 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>Pagination Class : CodeIgniter User Guide</title>
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<style type='text/css' media='all'>@import url('../userguide.css');</style>
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<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
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<script type="text/javascript" src="../nav/nav.js"></script>
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<script type="text/javascript" src="../nav/prototype.lite.js"></script>
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<script type="text/javascript" src="../nav/moo.fx.js"></script>
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<script type="text/javascript" src="../nav/user_guide_menu.js"></script>
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<meta http-equiv='expires' content='-1' />
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<meta http-equiv= 'pragma' content='no-cache' />
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<meta name='robots' content='all' />
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<meta name='author' content='ExpressionEngine Dev Team' />
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<meta name='description' content='CodeIgniter User Guide' />
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</head>
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<body>
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<!-- START NAVIGATION -->
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<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
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<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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<div id="masthead">
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td><h1>CodeIgniter User Guide Version 2.1.4</h1></td>
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<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
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</tr>
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</table>
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</div>
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<!-- END NAVIGATION -->
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<!-- START BREADCRUMB -->
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td id="breadcrumb">
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<a href="http://codeigniter.com/">CodeIgniter Home</a> ›
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<a href="../index.html">User Guide Home</a> ›
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Pagination Class
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</td>
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<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="ellislab.com/codeigniter/user-guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td>
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</tr>
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</table>
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<!-- END BREADCRUMB -->
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<br clear="all" />
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<!-- START CONTENT -->
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<div id="content">
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<h1>Pagination Class</h1>
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<p>CodeIgniter's Pagination class is very easy to use, and it is 100% customizable, either dynamically or via stored preferences.</p>
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<p>If you are not familiar with the term "pagination", it refers to links that allows you to navigate from page to page, like this:</p>
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<code><a href="#">« First</a> <a href="#"><</a> <a href="#">1</a> <a href="#">2</a> <b>3</b> <a href="#">4</a> <a href="#">5</a> <a href="#">></a> <a href="#">Last »</a></code>
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<h2>Example</h2>
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<p>Here is a simple example showing how to create pagination in one of your <a href="../general/controllers.html">controller</a> functions:</p>
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<code>
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$this->load->library('pagination');<br /><br />
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$config['base_url'] = 'http://example.com/index.php/test/page/';<br />
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$config['total_rows'] = 200;<br />
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$config['per_page'] = 20;
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<br /><br />
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$this->pagination->initialize($config);
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<br /><br />
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echo $this->pagination->create_links();</code>
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<h3>Notes:</h3>
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<p>The <var>$config</var> array contains your configuration variables. It is passed to the <dfn>$this->pagination->initialize</dfn> function as shown above. Although there are some twenty items you can configure, at
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minimum you need the three shown. Here is a description of what those items represent:</p>
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<ul>
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<li><strong>base_url</strong> This is the full URL to the controller class/function containing your pagination. In the example
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above, it is pointing to a controller called "Test" and a function called "page". Keep in mind that you can
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<a href="../general/routing.html">re-route your URI</a> if you need a different structure.</li>
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<li><strong>total_rows</strong> This number represents the total rows in the result set you are creating pagination for.
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Typically this number will be the total rows that your database query returned.
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</li>
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<li><strong>per_page</strong> The number of items you intend to show per page. In the above example, you would be showing 20 items per page.</li>
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</ul>
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<p>The <var>create_links()</var> function returns an empty string when there is no pagination to show.</p>
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<h3>Setting preferences in a config file</h3>
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<p>If you prefer not to set preferences using the above method, you can instead put them into a config file.
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Simply create a new file called <var>pagination.php</var>, add the <var>$config</var>
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array in that file. Then save the file in: <var>config/pagination.php</var> and it will be used automatically. You
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will NOT need to use the <dfn>$this->pagination->initialize</dfn> function if you save your preferences in a config file.</p>
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<h2>Customizing the Pagination</h2>
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<p>The following is a list of all the preferences you can pass to the initialization function to tailor the display.</p>
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<h4>$config['uri_segment'] = 3;</h4>
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<p>The pagination function automatically determines which segment of your URI contains the page number. If you need
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something different you can specify it.</p>
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<h4>$config['num_links'] = 2;</h4>
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<p>The number of "digit" links you would like before and after the selected page number. For example, the number 2
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will place two digits on either side, as in the example links at the very top of this page.</p>
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<h4>$config['use_page_numbers'] = TRUE;</h4>
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<p>By default, the URI segment will use the starting index for the items you are paginating. If you prefer to show the the actual page number, set this to TRUE.</p>
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<h4>$config['page_query_string'] = TRUE;</h4>
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<p>By default, the pagination library assume you are using <a href="../general/urls.html">URI Segments</a>, and constructs your links something like</p>
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<p><code>http://example.com/index.php/test/page/20</code></p>
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<p>If you have $config['enable_query_strings'] set to TRUE your links will automatically be re-written using Query Strings. This option can also be explictly set. Using $config['page_query_string'] set to TRUE, the pagination link will become.</p>
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<p><code>http://example.com/index.php?c=test&m=page&per_page=20</code></p>
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<p>Note that "per_page" is the default query string passed, however can be configured using $config['query_string_segment'] = 'your_string'</p>
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<h2>Adding Enclosing Markup</h2>
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<p>If you would like to surround the entire pagination with some markup you can do it with these two prefs:</p>
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<h4>$config['full_tag_open'] = '<p>';</h4>
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<p>The opening tag placed on the left side of the entire result.</p>
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<h4>$config['full_tag_close'] = '</p>';</h4>
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<p>The closing tag placed on the right side of the entire result.</p>
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<h2>Customizing the First Link</h2>
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<h4>$config['first_link'] = 'First';</h4>
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<p>The text you would like shown in the "first" link on the left. If you do not want this link rendered, you can set its value to FALSE.</p>
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<h4>$config['first_tag_open'] = '<div>';</h4>
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<p>The opening tag for the "first" link.</p>
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<h4>$config['first_tag_close'] = '</div>';</h4>
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<p>The closing tag for the "first" link.</p>
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<h2>Customizing the Last Link</h2>
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<h4>$config['last_link'] = 'Last';</h4>
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<p>The text you would like shown in the "last" link on the right. If you do not want this link rendered, you can set its value to FALSE.</p>
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<h4>$config['last_tag_open'] = '<div>';</h4>
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<p>The opening tag for the "last" link.</p>
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<h4>$config['last_tag_close'] = '</div>';</h4>
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<p>The closing tag for the "last" link.</p>
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<h2>Customizing the "Next" Link</h2>
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<h4>$config['next_link'] = '&gt;';</h4>
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<p>The text you would like shown in the "next" page link. If you do not want this link rendered, you can set its value to FALSE.</p>
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<h4>$config['next_tag_open'] = '<div>';</h4>
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<p>The opening tag for the "next" link.</p>
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<h4>$config['next_tag_close'] = '</div>';</h4>
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<p>The closing tag for the "next" link.</p>
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<h2>Customizing the "Previous" Link</h2>
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<h4>$config['prev_link'] = '&lt;';</h4>
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<p>The text you would like shown in the "previous" page link. If you do not want this link rendered, you can set its value to FALSE.</p>
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<h4>$config['prev_tag_open'] = '<div>';</h4>
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<p>The opening tag for the "previous" link.</p>
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<h4>$config['prev_tag_close'] = '</div>';</h4>
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<p>The closing tag for the "previous" link.</p>
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<h2>Customizing the "Current Page" Link</h2>
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<h4>$config['cur_tag_open'] = '<b>';</h4>
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<p>The opening tag for the "current" link.</p>
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<h4>$config['cur_tag_close'] = '</b>';</h4>
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<p>The closing tag for the "current" link.</p>
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<h2>Customizing the "Digit" Link</h2>
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<h4>$config['num_tag_open'] = '<div>';</h4>
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<p>The opening tag for the "digit" link.</p>
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<h4>$config['num_tag_close'] = '</div>';</h4>
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<p>The closing tag for the "digit" link.</p>
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<h2>Hiding the Pages</h2>
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<p>If you wanted to not list the specific pages (for example, you only want "next" and "previous" links), you can suppress their rendering by adding:</p>
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<code>
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$config['display_pages'] = FALSE;
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</code>
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<h2>Adding a class to every anchor</h2>
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<p>If you want to add a class attribute to every link rendered by the pagination class, you can set the config "anchor_class" equal to the classname you want.</p>
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</div>
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<!-- END CONTENT -->
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<div id="footer">
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<p>
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Previous Topic: <a href="output.html">Output Class</a>
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·
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<a href="#top">Top of Page</a> ·
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<a href="../index.html">User Guide Home</a> ·
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Next Topic: <a href="sessions.html">Session Class</a>
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</p>
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<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2012 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
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</div>
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</body>
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</html>
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