Codeigniter: Passing data from controller to view

Question

I want to pass $data from the controller named poll to the results_view however I am getting an undefined variable error.

Answer 1

If you pass

$data = your code
$this->load->view('your-page', $data);

and get data on your view as

<?php echo $data;?>

It won't work because ci didn't understand this patern. If like to pass value form controller to view so you can try this -

controller -

$data['any-name'] = your values;
$this->load->view('your-page', $data);

then in your view you can get this data by -

<?php echo $any-name;?>

Hope this helps you.

Answer 2

In simple terms,

$data['a'] in controller becomes $a in your view. ($data won't exist in your view, only the index will become available)

e.g.

Controller:    
$data['hello']='hellow world';

view:
echo $hello;

Answer 3

The view wouldn't call the data 'data'

The controller would include an associative index (not sure if that's correct nomenclature) for data e.g 'stuff' looking thus $data['stuff']

You'd echo in the view so: echo $stuff; not echo $data;

I am a v lowly code fiddler but do really like CodeIgniter so excuse me if i've got this arse about tit.

One more thing - surely your constructor function is a bit of a waste. All that loading of libraries and helpers is done with the autoload file.

Answer 4

In your controller you can pass

$data['poll'] = "Your results";

In your view you can call

echo $poll; 

Answer 5

I have seen all above answer so here is what I do when I have to load the data from the controller to my view. To Pass the Data To the view from the controller:

public function your_controller(){

   // Your Necessary Code 
   // You have the $data, $data2, $data3 to post to the view.

   $this->load->view('your_view_directory or view_page',['data'=>$data, 'data2'=>$data2, 'data3'=>$data3... so on ]);

}

And At the View Side You can simply retrieve that data: To Display You can simply use echo, print, print_r. And if you want to loop over it, you can do that as well.

Answer 6

Ok so I finally solved it. You should really have a model (it helps a lot)

In your model do something like

Model

class poll_model extends CI_MODEL {

 function __construct() {
   $this-load->database(); 
 }

 function get_poll {
   $this->db->query("SELECT * FROM table");
   $row = $query->row();

   $obj = array(
    'id' => $row->id
  );
   return $obj;
 }
}

Now if you have more than an id say name of poll # you can add in array. Now in your controller do

class Poll extends CI_Controller {

public function __construct()
   {
        parent::__construct();
        $this->load->database();
        $this->load->helper('form');
        $this->load->model('poll_model');
   }

public function index()
{
    $data["a"] = $this->poll_model->get_poll();
    $this->load->view('poll_view',$data);
}

And finally in VIEW put

<? echo $a["id"]; ?>

This is a big help. I figured it out by testing and it works for me.