Category Pagination

Hi Perch,

Okay, I think I see what you're going for. So on a page, you're displaying all of a category's sub-categories, and then using pagination to use 1 of those sub categories at a time. Is that right?

If so, we would keep keep the parent category in the URL and then swap out the category variable with each "page". Also, if we change the variable from cat to category, we can take advantage of the "selectedCategory" feature.

So, for example, our first page would be this:

www.mysite.co.uk/index.php?parentCategory=5

We would then select our categories like this:

list ($subCategories, $selectedCategory) = getCategories(array(
'tableName' => 'categories',
'rootCategoryNum' => intval(@$_REQUEST['parentCategory']),

));;

You can then determine your next/previous links like this:

$categoryNumArray = array_combine(array_keys($subCategories), array_pluck($subCategories, 'num'));

$nextLink = "";
$prevLink = "";

if (!$selectedCategory) {
if (array_key_exists(0, $categoryNumArray)) {
$nextLink = "?parentCategory=".@$_REQUEST['parentCategory']."&category=".$categoryNumArray[0];
}
}
else {
$currentKey = 0;
foreach ($categoryNumArray as $num) {
if ($num == $selectedCategory['num']) {
break;
}
$currentKey ++;
}

if (array_key_exists($currentKey - 1, $categoryNumArray)) {
$prevLink = "?parentCategory=".@$_REQUEST['parentCategory']."&category=".$categoryNumArray[$currentKey - 1];
}

if (array_key_exists($currentKey + 1, $categoryNumArray)) {
$nextLink = "?parentCategory=".@$_REQUEST['parentCategory']."&category=".$categoryNumArray[$currentKey + 1];
}
}

You can output anything you want from $selectedCategory as the current sub category.

Finally, you can output your next/prev links like this:

<?php if ($nextLink): ?>
<a href = "<?php echo $nextLink;?>">Next</a><br/>
<?php endif ?>

<?php if ($prevLink): ?>
<a href = "<?php echo $prevLink;?>">Prev</a><br/>
<?php endif ?>

Hope this helps get you started.