Drupal modules for browsing and managing Fedora-based digital repositories.
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<?php
/**
* Setups the globals for the Drupal pager.
*
* Does just what it says: Hacks the default Drupal pager such that it might
* be rendered, likely with: theme('pager', array(), $per_page, $pager_name)
* (I reccomend seeing the real documentation for more detail, but the first
* array can be a list of the tags to use for first, previous, next and last
* (text in the pager), I don't believe per_page is actually used in the theme
* function, and $pager_name is an integer used to identify the pager (such
* that there can be more than one--that is, tracking different lists of
* content on a single page. You can render the exact same pager multiple
* times, say if you want one at the top and bottom of a list, using the same
* ID/pager_name.
*
* @global $pager_total array
* Numerically indexed array, where keys are the $pager_names and values
* are the number of pages in the given set, based on: ceil($total_items/$per_page);
* @global $pager_page_array array
* Numerically indexed array, where keys are the $pager_names and values
* are the page selected in the relevant set.
* @param $pager_name int
* An integer to identify the pager to affect. Do note that paging in using
* this function will add the 'page' HTTP GET parameter to the URL, with
* the value containing a comma-separated list with max($pager_name + 1)
* values--that is, if you create a single pager named '10', the 'next'
* link will look something like: 0,0,0,0,0,0,0,0,0,0,1
* @param $per_page int
* An integer representing the number of items per page.
* @param $total_items int
* An integer representing the total number of items in the set.
* @return int
* An integer representing what the current page should be.
*/
function fedora_repository_setup_pager($pager_name, $per_page = NULL, $total_items = NULL) {
global $pager_total, $pager_page_array;
if ($per_page !== NULL && $total_items !== NULL) {
$pager_total[$pager_name] = ceil($total_items / $per_page);
}
//XXX: Don't know that this is neccessary, to try to load all the time, or
// whether Drupal will load it automatically somewhere... Docs seems a
// a little sparse.
$page_info = explode(',', isset($_GET['page']) ? $_GET['page'] : '');
$page = $page_info[$pager_name];
if ($page < 0) {
$page = 0;
}
if (!isset($pager_page_array)) {
$pager_page_array = pager_load_array($page, $pager_name, $page_info);
}
else {
$pager_page_array = pager_load_array($page, $pager_name, $pager_page_array);
}
$page = $pager_page_array[$pager_name];
return $page;
}