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Display data from a database using AJAX, jquery and codeigniter

The model seems to work the same way as the controller. AJAX displays the results as "null", so I think this is because we need to send the data as json. Any ideas on how to get the data in the correct format and display in the view

View

<button type='button' name='getdata' id='getdata'>Get Data.</button>

<div id='result_table' style="color:white;">
hola amigo
</div>

<script type='text/javascript' language='javascript'>
$('#getdata').click(function(){
                $.ajax({
                        url: 'http://localhost:8888/index.php/trial/getValues',
                         type:'POST',
                         dataType: 'json',
                          error: function(){
                          $('#result_table').append('<p>goodbye world</p>');
                          },

                         success: function(results){


                       $('#result_table').append('<p>hello world</p>' +results);
                       alert("Success!");

                          } // End of success function of ajax form
                          }); // End of ajax call

                });
</script>

controller

function getValues(){
    $this->load->model('get_db');
    $data['results'] = $this->get_db->getAll();
    $this->output->set_content_type('application/json');
    $this->output->set_output(json_encode($data));
    return $data;
}

Model

class Get_db extends CI_Model{
    function getAll(){
        $query=$this->db->query("SELECT * FROM questions");
        return $query->result();
        //returns from this string in the db, converts it into an array
    }
}

Ok, so AJAX returns a success warning, however, instead of displaying a table from the database, this is what appears in the div:

Hello world

zero

If I go directly to the URL ( http: //loca.lhost: 8888 / index.php / trial / getValues ), this will be the displayed object:

{
  "results": [
    {
      "qID": "1",
      "email": "hello",
      "qText": "hello",
      "playlistID": "",
      "timestamp": "0000-00-00 00:00:00"
    },
    {
      "qID": "2",
      "email": "",
      "qText": "",
      "playlistID": "",
      "timestamp": "0000-00-00 00:00:00"
    },

  }

How to extract this information and display what I want to display?

+4
3

json, $.each

success:function(data){
    $('#result_table').append('<p>hello world</p>');
    alert("Success!");
    $.each(data.results, function(k, v) {
        $.each(v, function(key, value) {
            $('#result_table').append('<br/>' + key + ' : ' + value);
        })
    })
}
+4

, $data , json_encode echo.

function getValues(){
    $this->load->model('get_db');
    $data['results'] = $this->get_db->getAll();
    echo json_encode($data);
}

, !

+1

, , json:

:

function getValues(){
    $this->load->model('get_db');
    $data['results'] = $this->get_db->getAll();

    if($data['result']){   // we got a result, output json
         echo json_encode( $data['result'] );
    } else {
         echo json_encode( array('error' => true) );
    }
}

javascript ( JSON = javascript)

success: function(data){
    // handle the result
    var re = $.parseJSON(data);

    if(!re.error){
        // no error so lets put out some data whatever way
    }
}

var re = $.parseJSON(data); json .:

re.result ..

json console.log(data), ( html). Chrome- .

0

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