我設法使用下拉數量菜單更改我的購物車中一種產品的數量，但是this.form.submit()如果我在購物車中有兩種具有更新數量的產品并且我決定再次更新其中一種，另一種產品的數量將被覆蓋并且恢復到其之前的原始值（更新前），該值是使用列出所有產品的頁面上的“添加到購物車”發送的。當我更新一個產品的數量時，如何保留其他產品已經更新的數量？<?php// Add products to basket:if (!isset($_SESSION['basket'])) { $_SESSION['basket'] = array();}if (isset($_POST['id'])) { $_SESSION['basket'][$_POST['id']] = array( 'product_id'=>$_POST['id'], 'product_photo'=>$_POST['hidden_photo'], 'product_photo_alt'=>$_POST['hidden_photo_alt'], 'product_name'=>$_POST['hidden_name'], 'product_price'=>$_POST['hidden_price'], 'product_quantity'=>$_POST['quantity'], );}?><?php// if(!empty($_SESSION['basket'])) { $total = 0; foreach ($_SESSION['basket'] as $key => $value) {// Below is the code which updates the quantity of a product with a particular id// But after submitting the form resetes the quantity of other products // With already updated quantity if (!empty($_POST['new_qty'][$value['product_id']])) { $quantity = $_POST['new_qty'][$value['product_id']]; } else { $quantity = $value['product_quantity']; }?><form method="post" action=""><select class="quantity-basket" name="new_qty[<?php echo $value['product_id']; ?>]" onchange="this.form.submit()"><?php// Quantity added to the basket: if ($quantity) {?><option value="<?php echo $quantity; ?>" hidden><?php echo $quantity; ?></option><?php}?><?php// Drop-down quantity menufor ($i = 0; $i <=50; $i++) {?><option value="<?php echo ($i == 0) ? $i . ' (Remove)' : $i; ?>"><?php echo ($i == 0) ? $i . ' (Remove)' : $i; ?></option><?php}?></select><!-- End of quantity drop-down menu --></form>
1 回答
湖上湖
TA貢獻2003條經驗 獲得超2個贊
<?php
if (!isset($_SESSION['basket'])) {
? $_SESSION['basket'] = array();
}
if (isset($_POST['id'])) {
? $_SESSION['basket'][$_POST['id']] = array(
? ? 'product_id'=>$_POST['id'],
? ? 'product_photo'=>$_POST['hidden_photo'],
? ? 'product_photo_alt'=>$_POST['hidden_photo_alt'],
? ? 'product_name'=>$_POST['hidden_name'],
? ? 'product_price'=>$_POST['hidden_price'],
? ? 'product_quantity'=>$_POST['quantity'],
? );
}
// Update quantity
if (isset($_POST['action']) && $_POST['action'] == 'update') {
? foreach($_SESSION['basket'] as &$value) {
? ? if($value['product_id'] === $_POST['type']) {
? ? ? ? $value['product_quantity'] = $_POST['new_qty'];
? ? ? ? break; // Stop the loop after we've found the product
? ? }
? }
}
?>
<?php
//?
?if(!empty($_SESSION['basket'])) {
? ?$total = 0;
? ?foreach ($_SESSION['basket'] as $product) {
?>
<form method="post" action="">
<input type="hidden" name="type" value='<?php echo $product["product_id"]; ?>'>
<input type="hidden" name="action" value="update">
<select class="quantity-basket" name="new_qty" onchange="this.form.submit()">
<option value="<?php echo $product['product_quantity']; ?>" hidden><?php echo $product['product_quantity']; ?></option>
<?php
// Drop-down quantity menu
for ($i = 0; $i <=50; $i++) {
?>
<option value="<?php echo ($i == 0) ? $i . ' (Remove)' : $i; ?>">
<?php echo ($i == 0) ? $i . ' (Remove)' : $i; ?>
</option>
<?php
}
?>
</select>
</form>
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