# Pagination

Wolff\Utils\Pagination

The pagination utility makes incredibly easy the process of creating a web page with pagination.

Its constructor looks like this:

__construct([int $total[, int $per_page[, int $page[, int $side_pages_n[, string $url_format]]]]])

And its main method get returns an array with the elements that will be shown in a pagination view.

Example

$pagination = new Pagination(
    50, //Total of elements
    10, //Elements per page
    3, //Current page
    4, //Number of side pages
    url('blog/{page}') //Url format
);

Giving the previous code, the following code $pagination->get() should return the following:

Array
(
    [0] => Array
        (
            [index] => 1
            [current_page] =>
            [url] => http://localhost/wolff/blog/1
        )

    [1] => Array
        (
            [index] => 2
            [current_page] =>
            [url] => http://localhost/wolff/blog/2
        )

    [2] => Array
        (
            [index] => 3
            [current_page] => 1
            [url] => http://localhost/wolff/blog/3
        )

    [3] => Array
        (
            [index] => 4
            [current_page] =>
            [url] => http://localhost/wolff/blog/4
        )

    [4] => Array
        (
            [index] => 5
            [current_page] =>
            [url] => http://localhost/wolff/blog/5
        )

)

That array now can be printed in the view like this:

Controller:

$data['pages'] = $pagination->get();
View::render('home', $data);

View:

    {% foreach ($pages as $page): %}
        <a href="{{ $page['url'] }}">{{ $page['index'] }}</a>
    {% endforeach %}

Keys

The pagination utility has the following options:

• total: Total of elements for the pagination.

• per_page: Total of elements that display per page.

• page: The current page.

• side_pages_n: The number of pages that will be shown at the left and right of the current page.

• url_format: The format of the url, basically will be the link to use for every page.

• show_ends: Display or not the first and last page.

General methods

Keep in mind that the methods can be chained for syntactic sugar, so the following code is valid:

$pagination->setTotal(100)
           ->setPageSize(10)
           ->setPage(5)
           ->setSidePages()
           ->setUrl('blog/posts/{page}')
           ->showEnds();

Set total

setTotal(int $total)

Sets the total number of elements.

$pagination->setTotal(100);

Set page size

setPageSize(int $per_page)

Set the total number of elements per page.

$pagination->setPageSize(10);

Set current page

setPage([int $page])

Set the current page.

$pagination->setPage(5);

By default it's zero 0.

Set number of side pages

setSidePages([int $side_pages_n])

Set the number of pages that will be at the left and right side of the current page.

$pagination->setSidePages(3);

Giving the example shown above, if the current page is 5, the pagination utility will show the pages 2 3 4 5 6 7 8.

$pagination->setSidePages(1);

Giving the example shown above, if the current page is 5, the pagination utility will show the pages 4 5 6.

By default it's five 5.

Set pages url

setUrl(string $url_format)

Set the url format used for the views.

The url uses this {page} placeholder, which will be replaced by the page number.

$pagination->setUrl('blog/posts/{page}');

Giving the example shown above, the page 3 should have the following value in its url: blog/posts/3.

Set show ends

showEnds([bool $show_ends])

Set on or off the display of the first and last page.

$pagination->showEnds(true);

By default the value is true.