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59 <h1>Pagination Class</h1>
61 <p>CodeIgniter's Pagination class is very easy to use, and it is 100% customizable, either dynamically or via stored preferences.</p>
63 <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>
65 <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>
69 <p>Here is a simple example showing how to create pagination in one of your <a href="../general/controllers.html">controller</a> functions:</p>
72 $this->load->library('pagination');<br /><br />
73 $config['base_url'] = 'http://example.com/index.php/test/page/';<br />
74 $config['total_rows'] = '200';<br />
75 $config['per_page'] = '20';
77 $this->pagination->initialize($config);
80 echo $this->pagination->create_links();</code>
84 <p>The <var>$config</var> array contains your configuration variables. It is passed to the <dfn>$this->pagination->initialize</dfn> function as shown above. Although there are some twenty items you can configure, at
85 minimum you need the three shown. Here is a description of what those items represent:</p>
88 <li><strong>base_url</strong> This is the full URL to the controller class/function containing your pagination. In the example
89 above, it is pointing to a controller called "Test" and a function called "page". Keep in mind that you can
90 <a href="../general/routing.html">re-route your URI</a> if you need a different structure.</li>
91 <li><strong>total_rows</strong> This number represents the total rows in the result set you are creating pagination for.
92 Typically this number will be the total rows that your database query returned.
94 <li><strong>per_page</strong> The number of items you intend to show per page. In the above example, you would be showing 20 items per page.</li>
97 <p>The <var>create_links()</var> function returns an empty string when there is no pagination to show.</p>
100 <h3>Setting preferences in a config file</h3>
102 <p>If you prefer not to set preferences using the above method, you can instead put them into a config file.
103 Simply create a new file called <var>pagination.php</var>, add the <var>$config</var>
104 array in that file. Then save the file in: <var>config/pagination.php</var> and it will be used automatically. You
105 will NOT need to use the <dfn>$this->pagination->initialize</dfn> function if you save your preferences in a config file.</p>
108 <h2>Customizing the Pagination</h2>
110 <p>The following is a list of all the preferences you can pass to the initialization function to tailor the display.</p>
113 <h4>$config['uri_segment'] = 3;</h4>
115 <p>The pagination function automatically determines which segment of your URI contains the page number. If you need
116 something different you can specify it.</p>
118 <h4>$config['num_links'] = 2;</h4>
120 <p>The number of "digit" links you would like before and after the selected page number. For example, the number 2
121 will place two digits on either side, as in the example links at the very top of this page.</p>
122 <h4>$config['page_query_string'] = TRUE</h4>
123 <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>
124 <p><code>http://example.com/index.php/test/page/20</code></p>
125 <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>
126 <p><code>http://example.com/index.php?c=test&m=page&per_page=20</code></p>
127 <p>Note that "per_page" is the default query string passed, however can be configured using $config['query_string_segment'] = 'your_string'</p>
128 <h2>Adding Enclosing Markup</h2>
130 <p>If you would like to surround the entire pagination with some markup you can do it with these two prefs:</p>
132 <h4>$config['full_tag_open'] = '<p>';</h4>
133 <p>The opening tag placed on the left side of the entire result.</p>
135 <h4>$config['full_tag_close'] = '</p>';</h4>
136 <p>The closing tag placed on the right side of the entire result.</p>
139 <h2>Customizing the First Link</h2>
141 <h4>$config['first_link'] = 'First';</h4>
142 <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>
144 <h4>$config['first_tag_open'] = '<div>';</h4>
145 <p>The opening tag for the "first" link.</p>
147 <h4>$config['first_tag_close'] = '</div>';</h4>
148 <p>The closing tag for the "first" link.</p>
150 <h2>Customizing the Last Link</h2>
152 <h4>$config['last_link'] = 'Last';</h4>
153 <p>The text you would like shown in the "last" link on the right. If you do not want this link rendered, you can set its value to FALSE.</p>
155 <h4>$config['last_tag_open'] = '<div>';</h4>
156 <p>The opening tag for the "last" link.</p>
158 <h4>$config['last_tag_close'] = '</div>';</h4>
159 <p>The closing tag for the "last" link.</p>
161 <h2>Customizing the "Next" Link</h2>
163 <h4>$config['next_link'] = '&gt;';</h4>
164 <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>
166 <h4>$config['next_tag_open'] = '<div>';</h4>
167 <p>The opening tag for the "next" link.</p>
169 <h4>$config['next_tag_close'] = '</div>';</h4>
170 <p>The closing tag for the "next" link.</p>
172 <h2>Customizing the "Previous" Link</h2>
174 <h4>$config['prev_link'] = '&lt;';</h4>
175 <p>The text you would like shown in the "previous" page link. If you do not want this link rendered, you can set its value to FALSE.</p>
177 <h4>$config['prev_tag_open'] = '<div>';</h4>
178 <p>The opening tag for the "previous" link.</p>
180 <h4>$config['prev_tag_close'] = '</div>';</h4>
181 <p>The closing tag for the "previous" link.</p>
183 <h2>Customizing the "Current Page" Link</h2>
185 <h4>$config['cur_tag_open'] = '<b>';</h4>
186 <p>The opening tag for the "current" link.</p>
188 <h4>$config['cur_tag_close'] = '</b>';</h4>
189 <p>The closing tag for the "current" link.</p>
192 <h2>Customizing the "Digit" Link</h2>
194 <h4>$config['num_tag_open'] = '<div>';</h4>
195 <p>The opening tag for the "digit" link.</p>
197 <h4>$config['num_tag_close'] = '</div>';</h4>
198 <p>The closing tag for the "digit" link.</p>
200 <h2>Hiding the Pages</h2>
202 <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>
205 $config['display_pages'] = FALSE;
209 <h2>Adding a class to every anchor</h2>
211 <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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