Problem with passing values to bootstrap modal window

I am just start creating a database update system with a bootstrap modal window. I am using ajax to populate the modal form fields but not getting any value. Please review the code and help me to figure out the error.

 HTML Code

Code:

<!-- Modal -->
        <div class="modal fade" id="edit_modal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
          <div class="modal-dialog">
            <div class="modal-content">
              <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
                <h4 class="modal-title" id="myModalLabel">Edit Data</h4>
                  </div>
                  <div class="modal-body">
                      <div class="content-wrapper content-wrapper--with-bg">
                      <?php echo form_open('quotation'); ?>
                           <p>
                            <input type="text" name="bname" id="bname" required class="form-control custom-ctrl" placeholder="Billing Name">
                           </p>  
                           <span class="text-danger"><?php echo form_error('bname'); ?></span>
                           <p>
                            <input type="text" name="company" id="company" required class="form-control custom-ctrl" placeholder="Company">
                           </p>
                           <span class="text-danger"><?php echo form_error('company'); ?></span>
                            <input type="hidden" name="id" id="id"> 
                            </p>
                            <button type="submit" id="update" class="btn btn-primary btn-custom pull-right"> Update</button>
                            <br>
                        <?php echo form_close(); ?>
              </div>
            </div>
          </div>
        </div>
      </div>

My Controller

PHP Code:

public function fetch_by_id(){
    $this->load->model("quotation_model");
    $result = $this->quotation_model->fetch_by_id();
    echo json_encode($result);   
} 


And Here is the Modal associated with the controller.

PHP Code:

public function fetch_by_id(){
    $id = $this->input->get('id');
    $this->db->where('id', $id);
    $query = $this->db->get('quotes');
    return $query->result();
} 


Here is the ajax code

Code:

$(document).on('click', '.editBtn', function(){
   var id = $(this).attr('data');
   $('#edit_modal').modal('show');

   $.ajax({
       type: 'ajax',
       method: 'get',
       url: '<?php echo base_url(); ?>quotation/fetch_by_id',
       data: {id: id},
       async: false,
       dataType: 'json',
       success: function(data){
          $("input[name=id]").val(data.id);
          $("input[name=bname]").val(data.bname);
          $("input[name=company]").val(data.company);
       },
       error: function(){
           alert('Could not displaying data');
       },
   });
});

I am just able to popup the modal window but not getting any value