У меня есть проект интернет-магазина, когда кто-то нажимает «купить» -> он покупает товар. Теперь я сохраняю элемент (он работает) и хочу обновить мою базу данных (необходимо обновить количество этих элементов) из корзины.
Контроллер - посмотреть на функцию insertOrderDataController и введите строку $updateCount = $this->product_model->updateItemCount($data,$counter);
<?php
class webs_controller extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->model('login_model');
$this->load->model('static_model');
$this->load->model('product_model');
$this->load->helper('url_helper');
$this->load->helper('form');
$this->load->library('session');
}
public function view($page = 'home') {
if (!file_exists(APPPATH . 'views/pages/' . $page . '.php')) {
// Whoops, we don't have a page for that!
show_404();
}
$data['title'] = ucfirst($page); // Capitalize the first letter
$this->load->view('templates/header', $data);
$this->load->view('pages/' . $page, $data);
$this->load->view('templates/footer', $data);
}
public function home() {
$data['user'] = $this->session->all_userdata();
$this->load->view('templates/header', $data);
$this->load->view('pages/home', $data);
$this->load->view('templates/footer');
}
public function products() {
$data['user'] = $this->session->all_userdata();
$this->load->view('templates/header', $data);
$this->load->view('pages/our_products', $data);
$this->load->view('templates/footer');
}
public function contact() {
$data['user'] = $this->session->all_userdata();
$this->load->view('templates/header', $data);
$this->load->view('pages/contact', $data);
$this->load->view('templates/footer');
}
public function our_products() {
$data['title'] = 'Produts';
$data['user'] = $this->session->all_userdata();
$totalBill['total'] = $this->product_model->CalculateTotalBill($data);
$data['product'] = $this->product_model->get_product();
$this->load->view('templates/header', $data);
$this->load->view('pages/our_products', $data);
$this->load->view('templates/footer');
}
public function calcit() {
$data['user'] = $this->session->all_userdata();
$data['calc'] = $this->product_model->CalculateTotalBill($data);
}
public function google_pie_chart() {
$data['title'] = 'statistic view';
$data['user'] = $this->session->all_userdata();
$data['year_pie'] = $this->static_model->get_Stat();
$this->load->view('templates/header', $data);
$this->load->view('pages/google_pie_chart', $data);
$this->load->view('templates/footer');
}
public function check($data, $counterCart) {
$error = '';
$data['productDB'] = $this->product_model->get_product();
$lengthDB = count($data['productDB']);
for ($i = 0; $i < $counterCart; $i++) {
$serialCartItem = intval($data[$i]['serial_number']);
$countCartItem = intval($data[$i]['count_purchase']);
for ($y = 0; $y < $lengthDB; $y++) {
$serialDBItem = intval($data['productDB'][$y]['serial_number']);
$countDBItem = intval($data['productDB'][$y]['item_count']);
if ($serialDBItem == $serialCartItem) {
if ($countDBItem <= $countCartItem) {
$error.= "Not enough of this product in stock ! You will move to Homepage.";
}
}
}
}
return $error;
}
public function insertOrderDataController() {
$counter = $this->input->post('counter');
$dataUser['user'] = $this->session->all_userdata();
$TheUsername = $dataUser['user']['User_name'];
for ($i = 0; $i < $counter; $i++) {
$data[$i] = array(
'User_name' => $TheUsername,
'serial_number' => $this->input->post('serial_number[' . $i . ']'),
'count_purchase' => $this->input->post('count_purchase[' . $i . ']')
);
}
$error = $this->check($data, $counter);
if ($error == '') {
$error_db = $this->product_model->insertOrderData($data);
if ($error_db == NULL) {
$updateCount = $this->product_model->updateItemCount($data,$counter);
$data['info'] = array("message" => "1");
$messageAlert = 'Thanks you for purchase !';
echo "<script type='text/javascript'>alert('$messageAlert');</script>";
// $updateCount = $this->product_model->updateItemCount($data,$counter);
} else {
$data['info'] = array("message" => "Error. Registration faild: " . $error_db["message"]);
}
} else {
echo "<script type='text/javascript'>alert('$error');</script>";
}
redirect("webs_controller/home"); //if activ - there is not alert.
}
}
модель -
<?php
class product_model extends CI_Model {
public function __construct() {
parent::__construct();
$this->load->database();
}
public function get_product() {
$query = $this->db->query('SELECT * FROM `product`');
return $query->result_array();
}
public function CalculateTotalBill($username) {
$user= $username['user']['User_name'];
$query = $this->db->query("SELECT bought_history.serial_number, bought_history.count_purchase, product.item_price FROM bought_history INNER JOIN product ON bought_history.serial_number=product.serial_number WHERE User_name IN (select User_name FROM bought_history WHERE User_name='$user')");
$temp = $query->result_array();
$total = 0;
for ($i = 0; $i < count($temp); $i++) {
$total = $total + ($temp[$i]['count_purchase'] * $temp[$i]['item_price']);
}
echo "The current total pay : <b>",$total,"$</b>";
return $total;
}
public function updateItemCount($data,$counterCart){
$data['productDB'] = $this->product_model->get_product();
$lengthDB = count($data['productDB']);
for ($i = 0; $i < $counterCart; $i++) {
$serialCartItem = intval($data[$i]['serial_number']);
$countCartItem = intval($data[$i]['count_purchase']);
for ($y = 0; $y < $lengthDB; $y++) {
$serialDBItem = intval($data['productDB'][$y]['serial_number']);
$countDBItem = intval($data['productDB'][$y]['item_count']);
if ($serialDBItem == $serialCartItem) {
$updatedCalc = $countDBItem-$countCartItem;
$query = $this->db->query('UPDATE `product` SET `item_count` = "'.$updatedCalc.'" WHERE `product`.`serial_number` = "'.$serialDBItem.'"');
$update = $this->db->mysql_query($query);
}
}
}
}
public function insertOrderData($data){
$this->db->db_debug = FALSE;
$error=NULL;
if (!$this->db->insert_batch('bought_history', $data)){
$error=$this->db->error();
}
return $error;
}
}
База данных - необходимо изменить: item_count
Мне удается обновить элемент, когда я вставляю только один элемент в корзину, но я получаю ошибку: 
, когда я пытаюсь обновить более одного элемента, обновляется только первый элемент, и я получаю ту же ошибку.
Спасибо, Идан.