CodeIgniter 상품 저장 코드

// controller function
public function save_product() {
    $this->load->model('product_model');
    $product_data = array(
        'name' => $this->input->post('name'),
        'description' => $this->input->post('description'),
        'price' => $this->input->post('price')
    );
    $product_id = $this->product_model->save_product($product_data);
    if ($product_id) {
        redirect('products');
    }
}

// model
public function save_product($product_data) {
    $this->db->insert('products', $product_data);
    return $this->db->insert_id();
}