In our previous blog : http://webkul.com/blog/use-customer-api-opencart/ , we learnt how to use customer api in opencart . Today we will learn , how use cart api in opencart .
Opencart uses the cart api in the product section while adding or editing the order from the admin end . After adding the customer from the sales->orders then add/edit when we click the continue button , then it goes to the product section .
After selecting the product when , we click on add product button , Two methods of the cart api will be called .First is ‘add’ . The add method is used to add the product into the cart . The code is given below:
/**
* Webkul Software.
*
* @category Webkul
* @package api
* @author Webkul
* @copyright Copyright (c) 2010-2017 Webkul Software Private Limited (https://webkul.com)
* @license https://store.webkul.com/license.html
*/
public function add() {
$this->load->language('api/cart');
$json = array();
//Check for api login
if (!isset($this->session->data['api_id'])) {
$json['error']['warning'] = $this->language->get('error_permission');
} else {
//Condition is true when when we edit the order from the admin end
if (isset($this->request->post['product'])) {
$this->cart->clear();
foreach ($this->request->post['product'] as $product) {
if (isset($product['option'])) {
$option = $product['option'];
} else {
$option = array();
}
$this->cart->add($product['product_id'], $product['quantity'], $option);
}
$json['success'] = $this->language->get('text_success');
unset($this->session->data['shipping_method']);
unset($this->session->data['shipping_methods']);
unset($this->session->data['payment_method']);
unset($this->session->data['payment_methods']);
//Condition is true when we add the product in the order from the admin end
} elseif (isset($this->request->post['product_id'])) {
$this->load->model('catalog/product');
//Get the product information
$product_info = $this->model_catalog_product->getProduct($this->request->post['product_id']);
if ($product_info) {
if (isset($this->request->post['quantity'])) {
$quantity = $this->request->post['quantity'];
} else {
$quantity = 1;
}
if (isset($this->request->post['option'])) {
$option = array_filter($this->request->post['option']);
} else {
$option = array();
}
$product_options = $this->model_catalog_product->getProductOptions($this->request->post['product_id']);
foreach ($product_options as $product_option) {
if ($product_option['required'] && empty($option[$product_option['product_option_id']])) {
$json['error']['option'][$product_option['product_option_id']] = sprintf($this->language->get('error_required'), $product_option['name']);
}
}
if (!isset($json['error']['option'])) {
$this->cart->add($this->request->post['product_id'], $quantity, $option);
$json['success'] = $this->language->get('text_success');
unset($this->session->data['shipping_method']);
unset($this->session->data['shipping_methods']);
unset($this->session->data['payment_method']);
unset($this->session->data['payment_methods']);
}
} else {
$json['error']['store'] = $this->language->get('error_store');
}
}
}
//Response in json format
$this->response->addHeader('Content-Type: application/json');
$this->response->setOutput(json_encode($json));
}
If product is added successfully then add method will return the success message.
After adding the product , ‘products’ method will be called . The ‘products’ method is used to fetch the cart products .The code is given below:
/**
* Webkul Software.
*
* @category Webkul
* @package api
* @author Webkul
* @copyright Copyright (c) 2010-2017 Webkul Software Private Limited (https://webkul.com)
* @license https://store.webkul.com/license.html
*/
public function products() {
$this->load->language('api/cart');
$json = array();
//Check for api login
if (!isset($this->session->data['api_id'])) {
$json['error']['warning'] = $this->language->get('error_permission');
} else {
// Stock
if (!$this->cart->hasStock() && (!$this->config->get('config_stock_checkout') || $this->config->get('config_stock_warning'))) {
$json['error']['stock'] = $this->language->get('error_stock');
}
// Products
$json['products'] = array();
$products = $this->cart->getProducts();
foreach ($products as $product) {
$product_total = 0;
foreach ($products as $product_2) {
if ($product_2['product_id'] == $product['product_id']) {
$product_total += $product_2['quantity'];
}
}
if ($product['minimum'] > $product_total) {
$json['error']['minimum'][] = sprintf($this->language->get('error_minimum'), $product['name'], $product['minimum']);
}
$option_data = array();
foreach ($product['option'] as $option) {
$option_data[] = array(
'product_option_id' => $option['product_option_id'],
'product_option_value_id' => $option['product_option_value_id'],
'name' => $option['name'],
'value' => $option['value'],
'type' => $option['type']
);
}
$json['products'][] = array(
'cart_id' => $product['cart_id'],
'product_id' => $product['product_id'],
'name' => $product['name'],
'model' => $product['model'],
'option' => $option_data,
'quantity' => $product['quantity'],
'stock' => $product['stock'] ? true : !(!$this->config->get('config_stock_checkout') || $this->config->get('config_stock_warning')),
'shipping' => $product['shipping'],
'price' => $this->currency->format($this->tax->calculate($product['price'], $product['tax_class_id'], $this->config->get('config_tax')), $this->session->data['currency']),
'total' => $this->currency->format($this->tax->calculate($product['price'], $product['tax_class_id'], $this->config->get('config_tax')) * $product['quantity'], $this->session->data['currency']),
'reward' => $product['reward']
);
}
// Voucher
$json['vouchers'] = array();
if (!empty($this->session->data['vouchers'])) {
foreach ($this->session->data['vouchers'] as $key => $voucher) {
$json['vouchers'][] = array(
'code' => $voucher['code'],
'description' => $voucher['description'],
'from_name' => $voucher['from_name'],
'from_email' => $voucher['from_email'],
'to_name' => $voucher['to_name'],
'to_email' => $voucher['to_email'],
'voucher_theme_id' => $voucher['voucher_theme_id'],
'message' => $voucher['message'],
'price' => $this->currency->format($voucher['amount'], $this->session->data['currency']),
'amount' => $voucher['amount']
);
}
}
// Totals
$this->load->model('extension/extension');
$totals = array();
$taxes = $this->cart->getTaxes();
$total = 0;
// Because __call can not keep var references so we put them into an array.
$total_data = array(
'totals' => &$totals,
'taxes' => &$taxes,
'total' => &$total
);
$sort_order = array();
$results = $this->model_extension_extension->getExtensions('total');
foreach ($results as $key => $value) {
$sort_order[$key] = $this->config->get($value['code'] . '_sort_order');
}
array_multisort($sort_order, SORT_ASC, $results);
foreach ($results as $result) {
if ($this->config->get($result['code'] . '_status')) {
$this->load->model('total/' . $result['code']);
// We have to put the totals in an array so that they pass by reference.
$this->{'model_total_' . $result['code']}->getTotal($total_data);
}
}
$sort_order = array();
foreach ($totals as $key => $value) {
$sort_order[$key] = $value['sort_order'];
}
array_multisort($sort_order, SORT_ASC, $totals);
$json['totals'] = array();
foreach ($totals as $total) {
$json['totals'][] = array(
'title' => $total['title'],
'text' => $this->currency->format($total['value'], $this->session->data['currency'])
);
}
}
//Response in json format
$this->response->addHeader('Content-Type: application/json');
$this->response->setOutput(json_encode($json));
}
If products fetched successfully , then it will return the details of the product that are currently in the cart . The response will look like as follows :
We can also remove the added product by clicking the remove button placed in the action column of product table . When we click the remove button , remove method of cart api will be called . The code for remove method is :
/**
* Webkul Software.
*
* @category Webkul
* @package api
* @author Webkul
* @copyright Copyright (c) 2010-2017 Webkul Software Private Limited (https://webkul.com)
* @license https://store.webkul.com/license.html
*/
public function remove() {
$this->load->language('api/cart');
$json = array();
if (!isset($this->session->data['api_id'])) {
$json['error'] = $this->language->get('error_permission');
} else {
// Remove
if (isset($this->request->post['key'])) {
$this->cart->remove($this->request->post['key']);
unset($this->session->data['vouchers'][$this->request->post['key']]);
$json['success'] = $this->language->get('text_success');
unset($this->session->data['shipping_method']);
unset($this->session->data['shipping_methods']);
unset($this->session->data['payment_method']);
unset($this->session->data['payment_methods']);
unset($this->session->data['reward']);
}
}
//Resonse in json format
$this->response->addHeader('Content-Type: application/json');
$this->response->setOutput(json_encode($json));
}
If product successfully removed , then it will return the success method as given below :
Not able to remove or update product from cart, as i am nit able to fetch the Key that is used for the product id.
{“success”:”Success: You have modified your shopping cart!”}
Showing success, but the cart is not update.
This is because of the key is not fetched for the product_id.
Thanks in advance.