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################
Pagination Class
################
CodeIgniter's Pagination class is very easy to use, and it is 100%
customizable, either dynamically or via stored preferences.
If you are not familiar with the term "pagination", it refers to links
that allows you to navigate from page to page, like this::
« First < 1 2 3 4 5 > Last »
*******
Example
*******
Here is a simple example showing how to create pagination in one of your
:doc:`controller <../general/controllers>` functions::
$this->load->library('pagination');
$config['base_url'] = 'http://example.com/index.php/test/page/';
$config['total_rows'] = 200;
$config['per_page'] = 20;
$this->pagination->initialize($config);
echo $this->pagination->create_links();
Notes
=====
The $config array contains your configuration variables. It is passed to
the $this->pagination->initialize 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:
- **base_url** 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 :doc:`re-route your URI <../general/routing>` if you
need a different structure.
- **total_rows** 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.
- **per_page** The number of items you intend to show per page. In the
above example, you would be showing 20 items per page.
The create_links() function returns an empty string when there is no
pagination to show.
Setting preferences in a config file
====================================
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
pagination.php, add the $config array in that file. Then save the file
in: config/pagination.php and it will be used automatically. You will
NOT need to use the $this->pagination->initialize function if you save
your preferences in a config file.
**************************
Customizing the Pagination
**************************
The following is a list of all the preferences you can pass to the
initialization function to tailor the display.
$config['uri_segment'] = 3;
============================
The pagination function automatically determines which segment of your
URI contains the page number. If you need something different you can
specify it.
$config['num_links'] = 2;
==========================
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.
$config['use_page_number'] = TRUE;
==================================
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.
$config['page_query_string'] = TRUE;
====================================
By default, the pagination library assume you are using :doc:`URI
Segments <../general/urls>`, and constructs your links something
like
::
http://example.com/index.php/test/page/20
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.
::
http://example.com/index.php?c=test&m=page&per_page=20
Note that "per_page" is the default query string passed, however can be
configured using $config['query_string_segment'] = 'your_string'
***********************
Adding Enclosing Markup
***********************
If you would like to surround the entire pagination with some markup you
can do it with these two prefs:
$config['full_tag_open'] = '<p>';
===================================
The opening tag placed on the left side of the entire result.
$config['full_tag_close'] = '</p>';
=====================================
The closing tag placed on the right side of the entire result.
**************************
Customizing the First Link
**************************
$config['first_link'] = 'First';
=================================
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.
$config['first_tag_open'] = '<div>';
======================================
The opening tag for the "first" link.
$config['first_tag_close'] = '</div>';
========================================
The closing tag for the "first" link.
*************************
Customizing the Last Link
*************************
$config['last_link'] = 'Last';
===============================
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.
$config['last_tag_open'] = '<div>';
=====================================
The opening tag for the "last" link.
$config['last_tag_close'] = '</div>';
=======================================
The closing tag for the "last" link.
***************************
Customizing the "Next" Link
***************************
$config['next_link'] = '>';
===============================
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.
$config['next_tag_open'] = '<div>';
=====================================
The opening tag for the "next" link.
$config['next_tag_close'] = '</div>';
=======================================
The closing tag for the "next" link.
*******************************
Customizing the "Previous" Link
*******************************
$config['prev_link'] = '<';
===============================
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.
$config['prev_tag_open'] = '<div>';
=====================================
The opening tag for the "previous" link.
$config['prev_tag_close'] = '</div>';
=======================================
The closing tag for the "previous" link.
***********************************
Customizing the "Current Page" Link
***********************************
$config['cur_tag_open'] = '<b>';
==================================
The opening tag for the "current" link.
$config['cur_tag_close'] = '</b>';
====================================
The closing tag for the "current" link.
****************************
Customizing the "Digit" Link
****************************
$config['num_tag_open'] = '<div>';
====================================
The opening tag for the "digit" link.
$config['num_tag_close'] = '</div>';
======================================
The closing tag for the "digit" link.
****************
Hiding the Pages
****************
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::
$config['display_pages'] = FALSE;
******************************
Adding a class to every anchor
******************************
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.
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