如何将数据从控制器传递到 codeigniter 中的模型

Question

I passed parameter from view to controller via URL. Now I want to send it from controller to model so that I can use it to pick data from tables. Here is my code:

controller:

function view(){
    if(isset($_GET['r'])) {
        $rank = $_GET['r'];
    }

    $rank=$this->uri->segment($rank);
    $this->load->model('names_rank');
    $data=$this->names_rank->get_names($rank);
    print_r($rank); 
}   

model:

function get_names($rank){  
    $this->db->select('u.*,v.*');
    $this->db->from('unit_member u, Vyeo v');
    $this->db->where('v.fno = u.fno');
    $this->db->where('u.present = ""');
    $this->db->where('v.rank', $rank);
    $this->db->where('v.date_of_end="0000-00-00"');
    $query = $this->db->get();
    return $query->result_array();
}

this is the result:

A PHP Error was encountered Severity: Warning Message: Missing argument 1 for Names_rank::get_names(), called in C:\\xampp\\htdocs\\unit\\application\\controllers\\names.php on line 32 and defined

Answer 1

This will work to send to model but your code isn't understandable for me, you re-declare the variable after setting it in the IF? are you trying to print_r() the output from the model?

I think you are trying to achieve this maybe?

function view() {

if(isset($_GET['r'])) {

$rank = $_GET['r'];
}else{

$rank = $this->uri->segment($rank);
}

$this->load->model('names_rank');

$data = $this->names_rank->get_names($rank);
print_r($data); 
}   

Answer 2

You can pass a Parameter to your model. First you have to call your model within your controller if you not enable it on autoload.

Your Model:

<?php
class AwesomeModel extends CI_Model 
{
   publif function do_work($param, $anotherParam)
   {
     //code here
   }
}

Then your controller:

<?php
class AwesomeController extends CI_Controller
{
    public function __construct()
    {
        /*
         * load in constructor so not need to recall every time you want use it
         * second parameter is model renaming (optional)
         */
        $this->load->model('AwesomeModel', 'awe');                                               
    }

    public function pass_data()
    {
        $this->awe->do_work($param1, $param2);
    }
?>

Thats all.