I have been working on an
online newspaper/blogging application with CodeIgniter 3.1.8 and Twitter Bootstrap 4.
By default, the posts are paginated and displayed *12 at a time*, at `http://myblog.com/`, `http://myblog.com/?page=2`, and so on.
In the Posts controller (`application\controllers\Posts.php`) I have:
PHP Code:
private function _initPagination($path, $totalRows, $query_string_segment = 'page')
{
//load and configure pagination
$this->load->library('pagination');
$config['base_url'] = base_url($path);
$config['query_string_segment'] = $query_string_segment;
$config['enable_query_strings'] = TRUE;
$config['reuse_query_string'] = TRUE;
$config['total_rows'] = $totalRows;
$config['per_page'] = 12;
if($this->Static_model->get_static_data()['has_pager']){
$config['display_pages'] = FALSE;
$config['first_link'] = FALSE;
$config['last_link'] = FALSE;
$config['prev_tag_open'] = '<li class="prev">';
$config['prev_tag_close'] = '</li>';
$config['next_tag_open'] = '<li class="next">';
$config['next_tag_close'] = '</li>';
}
if (!isset($_GET[$config['query_string_segment']]) || $_GET[$config['query_string_segment']] < 1) {
$_GET[$config['query_string_segment']] = 1;
}
$this->pagination->initialize($config);
$limit = $config['per_page'];
$offset = ($this->input->get($config['query_string_segment']) - 1) * $limit;
return array(
'limit' => $limit,
'offset' => $offset
);
}
public function index()
{
//call initialization method
$config = $this->_initPagination("/", $this->Posts_model->get_num_rows());
$data = $this->Static_model->get_static_data();
$data['base_url'] = base_url("/");
$data['pages'] = $this->Pages_model->get_pages();
$data['categories'] = $this->Categories_model->get_categories();
$data['search_errors'] = validation_errors();
//use limit and offset returned by _initPaginator method
$data['posts'] = $this->Posts_model->get_posts($config['limit'], $config['offset']);
$this->twig->addGlobal('pagination', $this->pagination->create_links());
// featured posts
if ($data['is_featured']) {
$data['featured'] = $this->Posts_model->featured_posts();
$this->twig->addGlobal('featuredPosts', "themes/{$data['theme_directory']}/partials/hero.twig");
}
$this->twig->display("themes/{$data['theme_directory']}/layout", $data);
}
I am currently working on loading more posts via AJAX. I use the following code to do this:
Code:
(function($) {
var currentPage = 2;
var posts = null;
$('.pagination').hide();
$(window).scroll(function() {
if ($(window).scrollTop() >= $(document).height() - $(window).height() - 25) {
loadMore();
}
});
function loadMore() {
$.ajax({
url: baseUrl + '?page=' + currentPage,
type: 'GET',
beforeSend: function() {
if (typeof posts != 'undefined') {
$('.loader').show();
}
}
})
.done(function(data) {
$('.loader').hide();
posts = $(data).find('#postsContainer').html();
// If there are no more posts, hide loader
// Otherwise, load more posts
if (typeof posts == 'undefined') {
$('.loader').hide();
$('#postsContainer').append('<p class="text-center text-muted">No more posts to load</p>');
} else {
$('#postsContainer').append(posts);
currentPage = currentPage + 1;
}
});
}
})(jQuery);
The problem is that the script does not know when `currentPage` equals the last page so, as a result, "No more posts to load" is displayed as many times as I scroll after the last pos has loaded.
I should do something like:
Code:
if (currentPage > maxPage) {
$('#postsContainer').append('<p class="text-center text-muted">No more posts to load</p>');
}
But I do not have the `maxPage` variable.
How do I get the number of pagination items?
How do I get the number of pagination items in Codeigniter 3?
