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authorDerek Jones <derek.jones@ellislab.com>2011-10-05 20:34:52 +0200
committerDerek Jones <derek.jones@ellislab.com>2011-10-05 20:34:52 +0200
commit8ede1a2ecbb62577afd32996956c5feaf7ddf9b6 (patch)
tree2e960ec3b416b477f40bb546371f2d486f4a22f0 /user_guide_src/source/libraries/pagination.rst
parentd1ecd5cd4ae6ab5d37df9fbda14b93977b9e743c (diff)
replacing the old HTML user guide with a Sphinx-managed user guide
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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'] = '&gt;';
+===============================
+
+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
+*******************************
+
+$config['prev_link'] = '&lt;';
+===============================
+
+The text you would like shown in the "previous" page link. If you do not
+want this link rendered, you can set its value to FALSE.
+
+$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.