pagination doesn't work in codeigniter - codeigniter

Question

I have successfully created pagination on some of the pages on the application on which I am working with, but I can't make it on this one:
I have 7 records in the database, and when
page is displayed all 7 records are displayed instead of 5, as I would like to be.
Sure enough, links for the paging are not displayed.
Here is my controller code:
public function displayAllFaqCategories()
{
//initializing & configuring paging
$currentUser = $this->isLoggedIn();
$this->load->model('faqCategoriesModel');
$this->db->order_by('sorder');
$limit = 5;
$offset = 3;
$offset = $this->uri->segment(3);
$this->db->limit(5, $offset);
$data['faq_categories'] = $this->faqCategoriesModel->selectCategoriesAndParents();
$totalresults = $this->db->get('faq_categories')->num_rows();
//initializing & configuring paging
$this->load->library('pagination');
$config['base_url'] = site_url('/backOfficeUsers/faqcategories');
$config['total_rows'] = $totalresults;
$config['per_page'] = 5;
$config['uri_segment'] = 3;
$this->pagination->initialize($config);
$errorMessage = '';
$data['main_content'] = 'faq/faqcategories';
$data['title'] = 'FAQ Categories';
$this->load->vars($data,$errorMessage);
$this->load->vars($currentUser);
$this->load->view('backOffice/template');
} // end of function displayAllFaqCategories
And here is my model function code:
public function selectCategoriesAndParents($selectWhat = array())
{
$data = array();
$query = $this->db->query("SELECT fq . * , COALESCE( fqp.$this->parent_name, '0' ) AS parentname
FROM $this->table_name AS fq
LEFT OUTER JOIN $this->table_name AS fqp ON fqp.catid = fq.parentid");
if($query->num_rows() > 0)
{
foreach($query->result_array() as $row)
{
$data[] = $row;
}
}
$query->free_result();
return $data;
} // end of function selectCategoriesAndParents
In the view, bellow of the table with the records I have the following code:
<?php echo $this->pagination->create_links();?>
Any help will be deeply appreciated.
Regards,Zoran

Answer 1

You've mixed two different things together I think. You're partially using the ActiveRecord class of CI, but then running the query yourself.
The simplest change would be:
// get all the rows
$data['faq_categories'] = $this->faqCategoriesModel->selectCategoriesAndParents();
// figure out the count of all of them
$totalresults = count($data['faq_categories']);
// only take some of the rows of the array, instead of keeping all of them and then showing all 7 of your records
$data['faq_categories'] = array_splice($data['faq_categories'], $offset, $limit);
Hopefully that should fix it!
To further explain what the original problem is, I think when you run this:
$totalresults = $this->db->get('faq_categories')->num_rows();
It takes the previous line $this->db->limit(5, $offset); into account, so it only returns 5 rows. Then, when you tell the pagination library that you only want to show 5 per page, the library thinks that it is actually showing all the results, so there is no need for pagination links!

Answer 2

Edit like this
$offset = $this->uri->segment(3) ? $this->uri->segment(3) : 0;