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Pagination Class
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<h1>Pagination Class</h1>
<p>CodeIgniter's Pagination class is very easy to use, and it is 100% customizable, either dynamically or via stored preferences.</p>
<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>
<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>
<h2>Example</h2>
<p>Here is a simple example showing how to create pagination in one of your <a href="../general/controllers.html">controller</a> functions:</p>
<code>
$this->load->library('pagination');<br /><br />
$config['base_url'] = 'http://example.com/index.php/test/page/';<br />
$config['total_rows'] = '200';<br />
$config['per_page'] = '20';
<br /><br />
$this->pagination->initialize($config);
<br /><br />
echo $this->pagination->create_links();</code>
<h3>Notes:</h3>
<p>The <var>$config</var> array contains your configuration variables. It is passed to the <dfn>$this->pagination->initialize</dfn> function as shown above. Although there are some twenty items you can configure, at
minimum you need the three shown. Here is a description of what those items represent:</p>
<ul>
<li><strong>base_url</strong> This is the full URL to the controller class/function containing your pagination. In the example
above, it is pointing to a controller called "Test" and a function called "page". Keep in mind that you can
<a href="../general/routing.html">re-route your URI</a> if you need a different structure.</li>
<li><strong>total_rows</strong> This number represents the total rows in the result set you are creating pagination for.
Typically this number will be the total rows that your database query returned.
</li>
<li><strong>per_page</strong> The number of items you intend to show per page. In the above example, you would be showing 20 items per page.</li>
</ul>
<p>The <var>create_links()</var> function returns an empty string when there is no pagination to show.</p>
<h3>Setting preferences in a config file</h3>
<p>If you prefer not to set preferences using the above method, you can instead put them into a config file.
Simply create a new file called <var>pagination.php</var>, add the <var>$config</var>
array in that file. Then save the file in: <var>config/pagination.php</var> and it will be used automatically. You
will NOT need to use the <dfn>$this->pagination->initialize</dfn> function if you save your preferences in a config file.</p>
<h2>Customizing the Pagination</h2>
<p>The following is a list of all the preferences you can pass to the initialization function to tailor the display.</p>
<h4>$config['uri_segment'] = 3;</h4>
<p>The pagination function automatically determines which segment of your URI contains the page number. If you need
something different you can specify it.</p>
<h4>$config['num_links'] = 2;</h4>
<p>The number of "digit" links you would like before and after the selected page number. For example, the number 2
will place two digits on either side, as in the example links at the very top of this page.</p>
<h4>$config['page_query_string'] = TRUE</h4>
<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>
<p><code>http://example.com/index.php/test/page/20</code></p>
<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>
<p><code>http://example.com/index.php?c=test&m=page&per_page=20</code></p>
<p>Note that "per_page" is the default query string passed, however can be configured using $config['query_string_segment'] = 'your_string'</p>
<h2>Adding Enclosing Markup</h2>
<p>If you would like to surround the entire pagination with some markup you can do it with these two prefs:</p>
<h4>$config['full_tag_open'] = '<p>';</h4>
<p>The opening tag placed on the left side of the entire result.</p>
<h4>$config['full_tag_close'] = '</p>';</h4>
<p>The closing tag placed on the right side of the entire result.</p>
<h2>Customizing the First Link</h2>
<h4>$config['first_link'] = 'First';</h4>
<p>The text you would like shown in the "first" link on the left.</p>
<h4>$config['first_tag_open'] = '<div>';</h4>
<p>The opening tag for the "first" link.</p>
<h4>$config['first_tag_close'] = '</div>';</h4>
<p>The closing tag for the "first" link.</p>
<h2>Customizing the Last Link</h2>
<h4>$config['last_link'] = 'Last';</h4>
<p>The text you would like shown in the "last" link on the right.</p>
<h4>$config['last_tag_open'] = '<div>';</h4>
<p>The opening tag for the "last" link.</p>
<h4>$config['last_tag_close'] = '</div>';</h4>
<p>The closing tag for the "last" link.</p>
<h2>Customizing the "Next" Link</h2>
<h4>$config['next_link'] = '&gt;';</h4>
<p>The text you would like shown in the "next" page link.</p>
<h4>$config['next_tag_open'] = '<div>';</h4>
<p>The opening tag for the "next" link.</p>
<h4>$config['next_tag_close'] = '</div>';</h4>
<p>The closing tag for the "next" link.</p>
<h2>Customizing the "Previous" Link</h2>
<h4>$config['prev_link'] = '&lt;';</h4>
<p>The text you would like shown in the "previous" page link.</p>
<h4>$config['prev_tag_open'] = '<div>';</h4>
<p>The opening tag for the "previous" link.</p>
<h4>$config['prev_tag_close'] = '</div>';</h4>
<p>The closing tag for the "previous" link.</p>
<h2>Customizing the "Current Page" Link</h2>
<h4>$config['cur_tag_open'] = '<b>';</h4>
<p>The opening tag for the "current" link.</p>
<h4>$config['cur_tag_close'] = '</b>';</h4>
<p>The closing tag for the "current" link.</p>
<h2>Customizing the "Digit" Link</h2>
<h4>$config['num_tag_open'] = '<div>';</h4>
<p>The opening tag for the "digit" link.</p>
<h4>$config['num_tag_close'] = '</div>';</h4>
<p>The closing tag for the "digit" link.</p>
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