Codeigniter Pagination and MySQL Query with dynamic parameters - php

Question

Let me explain my issue in detail
I have a table called products
Products : Name , views , sale_wanted , added_date
I am listing all my products in a view .
I am handling sale wanted through a flag means 0 or 1.
There are some links to sort the listing.
Most Viewed
Wanted
For Sale
New Arrivals
Now when user clicks all the listing is sorted according to the parameter i am sendig.
I want to use pagination class of Codeigniter.
Here comes some issues.
When i am clicking let suppose Wanted and sending a parameter it lists all the products wanted.
Now i click on a pagination link and the wanted parameter is gone
and the list becomes without wanted parameter.
Same goes with the other Anchors.
I have to restrict it so it still has my parameter.
The second problem is that what i see Codeigniter is laking.
I need some links that user can select. Means i want to give the user functionality to select how many products he wants to see in one page.
Let suppose 5 ,10 ,15 ,20
Choosing the greater number will reduce the number of pages.
And still i want the same functionality.
The important point is that i want to handle all this just in one shot means i dont want to duplicate my code for every anchor.
I need suggestions from expert and any help regarding Pagination library.

Answer 1

$seg=3
$noOfresultsToshow=$this->uri->segment('5')//use if else for by default no of results
$typeOfresult=$this->uri->segment('4'); //Most Viewed Wanted For Sale New Arrivals
$config['total_rows'] = $countqueryresults;// mention the total rows here
$config['per_page'] = $noOfresultsToshow;
$config['uri_segment'] = $seg;
$this->pagination->initialize($config);
$data['yourvariable'] = $this->model_name->getData($config['per_page'], $this->uri->segment($seg),$typeOfresult);
$data['links'] = $this->pagination->create_links();
in your view file echo $links;

Answer 2

I have found a solution for the issue.
I have made two methods in Codeigniter Pagination library
Here they are
Defined two new variables
var $base_link = '';
var $per_page_link = TRUE;
var $per_page_array = array();
The user can define both of them while initializing
$config['per_page_link'] = TRUE;
$config['per_page_array'] = array(5,10,15,20);
$this->pagination->initialize($config);
Now the methods
public function create_per_page()
{
$CI =& get_instance();
$output = '';
$current = $CI->uri->segment(3,5);
if($this->per_page_link === TRUE AND count($this->per_page_array) > 1){
foreach($this->per_page_array as $row){
if($current == $row){
$output .= $this->cur_tag_open . $row . $this->cur_tag_close;
$output .= ' ';
}else{
$output .= ''.$row.'';
$output .= ' ';
}
}
}
return $output;
}
And the other is create_per_page_links(). I have just copied the code of create_links method in it and modified it. In the start of create_per_page_links() i have added these extra lines.
$this->per_page = $CI->uri->segment(3,5);
$this->uri_segment = $CI->uri->segment(4,1);
However, This will only work with segments on. i haven't tested it with query string. Also if per_page_link is FALSE both methods will not work.
Calling create_per_page_links will generate the following
« First < 1 2 3 4 5 > Last »
And create_per_page will generate the following
5 10 15 20
And Done