Delete Image

//View
<td><a href="<?php echo base_url('panel/slider_image_delete/'.$image->slider_id.'/'.$image->s_id) ?>" class="btn btn-danger btn-flat btn-sm"><i class="fa fa-trash"></i> Hapus</a></td>

//Controller
public function slider_image_delete($id,$image_id)
    {
        $this->input->post('slider_id');
        $id=$this->session->userdata('slider_id');

        $result = $this->slider_model->image_delete($image_id);

        if($result == 1){
            $this->session->set_flashdata("sukses", "<div class='alert alert-success'><strong><i class='fa fa-check'></i> Berhasil Menghapus Gambar gallery</strong></div>");
            redirect('panel/slider_content/'.$id);//Errornya Missing Argument in Slider Content
        }else{
            $this->session->set_flashdata("alert", "<div class='alert alert-danger'><strong> Hapus data GAGAL di lakukan</strong></div>");
            redirect('panel/slider_content/'.$id);
        }
    }
public function slider_content($id="")
    {
        $data = array('get_name'    => $this->slider_model->get_id($id),
                      'get_content' => $this->slider_model->get_content($id),
                      'content'     => 'backend/v_slider_content'
                      );

        $this->load->view('backend/v_index', $data);
    }
//Model
public function image_delete($id)
    {
        $this->db->where('s_id', $id);
        $query=$this->db->delete('pm_slider_content');
        return $query;
    }