codigniter: how to pass array from controller to view with jquery

Question

already my controller index method load with a parameter where two dropdown field, when I select the first one then I get data for the second one with jquery ajax and then when I select second one then I need to pass another array from a list_ByBatch method.

My controller is:

public function index() {
    $data['round'] = $this -> AttendanceModel -> get_round();

    $this->load->view('common/header'); 
    $this->load->view('common/menu');
    $this->load->view('attendance/attendance', $data);
    $this->load->view('common/footer');
}

public function list_ByBatch(){
    $batch=$this->input->post('batchid',TRUE);      
    $list['trainee']=$this->AttendanceModel->get_traineeList($batch);
    if(!empty($list['trainee'])){
        return $list['trainee'];
    }
}

Script:

   <script type="text/javascript">
    $(document).ready(function() { 
        $("#round").change(function(){
            /*dropdown post */
            $.ajax({
            url:"<?php echo base_url(); ?>index.php/attendance/batch_ByRound",    
            data: {round: $(this).val()},
            type: "POST",
            success: function(data){ 
                $("#batch-list").html(data);
            }
            });
        });

        $("#batch-list").change(function(){
            /*dropdown post */
            $.ajax({
            url:"<?php echo base_url(); ?>index.php/attendance/list_ByBatch",    
            data: {batchid: $(this).val()},
            type: "POST",
            success: function(data){ 
                $("#traineeList").html(data);
                $("#subTotal").html("Total: " + $('#traineeList tr').length.toString());
                document.getElementById("classHour").defaultValue = "4";
            }
            });
         });

    });

</script>

how do I pass the array in 'list_ByBatch' to view page which is already loaded when #batch-list change function execute.

taxicala · Accepted Answer · 2015-10-07 14:51:16Z

2

Instead of returning, you should be using echo and json_encode:

public function list_ByBatch(){
    $batch=$this->input->post('batchid',TRUE);      
    $list['trainee']=$this->AttendanceModel->get_traineeList($batch);
    if(!empty($list['trainee'])){
        echo json_encode($list['trainee']);
    }
}

answered Oct 7, 2015 at 14:51

taxicala

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4 Comments

Mir Abzal Ali Over a year ago

great, got it. but how do I receive this array in view page?

taxicala Over a year ago

it's the first parameter of the success callback in your ajax call.

Mir Abzal Ali Over a year ago

could you please help to do this. just how do I get the variable in my view page.

taxicala Over a year ago

it the "data" parameter of your success callback in the ajax call "success: function(data){ "

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