在codeigniter中输入类型文本的SET $ per_page

Question

hello guys i have the following problem: i've set up my pagination with the help of codeigniter pagination class but i want to do something more:

I would like users to enter a value in an input box... and then the $per_page to be set automaticaly at that value:

here is my code:

public function index($offset = NULL, $limit = NULL)
    {
        $this->load->library('pagination');

        $offset = $this->uri->segment(3);
        $total = $this->db->count_all('posts');

        $per_page = 5;      

        $config['base_url'] = base_url().'welcome/index';
        $config['total_rows'] = $total;
        $config['uri_segment'] = 3;
        $config['per_page'] = $per_page;

        $this->pagination->initialize($config); 

        $data['pagination'] = $this->pagination->create_links();
        $data['posts'] = $this->Model_cats->get_pagination_field($config['per_page'], $offset);

and so on...

the pagination work great!

this is the html:

<div id="pagination">

    <?php  echo $pagination;?> 
    <input type="text" id="set_pagination">
    <input type="submit" id="submit_pagination">

</div>

ok how can i submit a number let's say 3 and show me 3 posts per page?

Any idea? $per_page = $this->input->post.... something..

Answer 1

First change your per_page as

$per_page = 3;

and to your model send $per_page including with offset as

$data['posts'] = $this->Model_cats->get_pagination_field($config['per_page'], $offset,$per_page);

and at your model write limit as

$this->db->limit($perpage,$offset);

thats it....hope it help for you