FlashData在Codeigniter中不起作用

Question

I would like to set flash data in my project. I tried setting all flash data but it doesn't work, why?

My model:

public function deleteCamera($id_camera)
    {
        $this->db->where('id_camera', $id_camera);
        $this->db->delete('camera');
    }

My controller:

public function delete($id_camera)
    {
        $terdaftar=$this->Crud_model->cameraTerdaftar($id_camera);
        if ($terdaftar) {

            $this->session->set_flashdata('terhapus', 'Camera Berhasil Dihapus');
            $this->Crud_model->deleteCamera($id_camera);
            redirect('Home', 'refresh');
        } else {
            $this->session->set_flashdata('fail', 'Tidak dapat menghapus, Camera tersebut telah digunakan');
            redirect('Home','refresh');
        }
    }

My view:

<?php if (validation_errors()) { ?>
  <div style="margin-top: 20px" class="alert alert-danger">
    <strong><?php echo validation_errors(); ?></strong>
  </div>
<?php } else if ($this->session->flashdata('terhapus')) { ?>
   <div style="margin-top: 20px" class="alert alert-danger">
     <strong><?php echo $this->session->flashdata('terhapus'); ?></strong>
   </div>
<?php } else if ($this->session->flashdata('fail')) { ?>
  <div style="margin-top: 20px" class="alert alert-danger">
    <strong><?php echo $this->session->flashdata('fail'); ?></strong>
  </div>
<?php } else if ($this->session->flashdata('sudah_input')) { ?>
<?php } ?>

Answer 1

in order to display your flashdata to your page, do it something like this.

if($this->session->flashdata('terhapus')){ 
   echo $this->session->flashdata('terhapus'); 
}

you can add style and js script on it.