如何在Codeigniter中将变量从控制器传递到模型

Question

controller:

public function getimagesprojects()
{
    $param2 = $this->uri->segment(4);
    $param3 = $this->uri->segment(5);
    $data   = $this->Admin_db->getimages($param2, $param3);
    foreach ($data as $images) {
        return $images;
    }
}

here I pass two variables from ajax method to the above controller.
Then I call getimages method of model by passing two variables but values are not passing to model.

model:

function getimages($vendor_id, $vendor_pid)
{
    echo $vendor_id;
    echo $vendor_pid;
    $images = array();
    $res    = $this->db->query("SELECT project_gallery FROM projects where vendor_id='$vendor_id' and id='$vendor_pid';");
    foreach ($res->result_array() as $row) {
        $images[] = $row;
    }
    return $images;
}

In the above model I am trying to print values which are passed but not prited.
please help me.

Answer 1

echo images instead of returning.And in model return $res->result_array() .The result_array() returns the result in array format.

Controller:

public function getimagesprojects()

{

 $param2 = $this->uri->segment(4);

$param3 =$this->uri->segment(5);
$this->load->model('Admin_db');
$data=$this->Admin_db->getimages($param2,$param3);
foreach($data as $images)

  {

  echo $images;//echo here

  }
}

Model:

function getimages($vendor_id, $vendor_pid)
{
    echo $vendor_id;
    echo $vendor_pid;
    $images = array();
    $res    = $this->db->query("SELECT project_gallery FROM projects where vendor_id='$vendor_id' and id='$vendor_pid'");
   return $res->result_array();//just return result in aray format
}

Answer 2

I don't see why you pass the variable to the model only to echo them from there, model shouldn't be printing anyway, do the printing in the controller (or better still, in the view). Then you iterate the result_array only to recreate the exact same array under the name $images, that's unnecessary. I'm not sure if your query was working correctly, but I made a change to use the Codeigniter functions as they are a little cleaner and are more secure.

Controller:

public function getimagesprojects()
{
    $param2 = $this->uri->segment(4);
    $param3 = $this->uri->segment(5);
    echo $param2;
    echo $param3;
    $data   = $this->Admin_db->getimages($param2, $param3);
    foreach ($data as $images) {
        echo $images;
    }
}

model:

function getimages($vendor_id, $vendor_pid)
{

    $images = array();
    $this->db->where('vendor_id', $vendor_id);
    $this->db->where('id', $vendor_pid);
    $res = $this->db->get('project_gallery');

    return $res->result_array();
}