[英]Change product price in Cart by custom field, Woocommerce
I'm currently in a problem where I have to add option in Cart with checkbox (for each item in Cart) which will change item's price with one from custom attribute.我目前遇到一个问题,我必须在购物车中添加带有复选框的选项(对于购物车中的每个项目),这将使用自定义属性中的一个更改项目的价格。
This is an illustration of it (I have already created custom field, just need price updating function when button "Update cart" is clicked)这是它的一个说明(我已经创建了自定义字段,只需单击“更新购物车”按钮时需要价格更新功能)
Code for displaying checkbox for each item (/woocommerce/templates/cart/cart.php):为每个项目显示复选框的代码(/woocommerce/templates/cart/cart.php):
<td class="product-url">
<?php
$html = sprintf( '<div class="lorem"><input type="checkbox" name="cart[%s][lorem]" value="%s" size="4" class="input-text url text" /> Lorem price</div>', $cart_item_key, esc_attr( $values['url'] ) );
echo $html;
?>
</td>
Here I'm assuming that lorem price
is stored in custom meta field associated with meta_key your_custom_meta_field
在这里,我假设
lorem price
存储在与 meta_key your_custom_meta_field
关联的自定义元字段中
Use following code in your theme's function.php
file在主题的
function.php
文件中使用以下代码
add_action( 'woocommerce_before_calculate_totals', 'my_custom_calculate_totals' );
function my_custom_calculate_totals( $cart ) {
if ( ! empty( $cart->cart_contents ) ) {
$lorem_price = array();
if ( ! empty( $_REQUEST['cart'] ) ) { // check if any of the checkboxes is checked
WC()->session->set( 'my_lorem_price', $_REQUEST['cart'] ); // set all checkboxes information in session
$lorem_price = $_REQUEST['cart'];
}
if ( empty( $lorem_price ) ) {
$lorem_price = WC()->session->get( 'my_lorem_price' ); // fetch all checkboxes information from session
}
if ( empty( $lorem_price ) ) {
return; // don't do anything if any of the checkboxes is not checked
}
foreach ( $cart->cart_contents as $cart_item_key => $cart_item ) {
if ( isset( $lorem_price[ $cart_item_key ]['lorem'] ) ) {
// Use following line if lorem price is set at variation level
$id = ( ! empty( $cart_item['variation_id'] ) && $cart_item['variation_id'] > 0 ) ? $cart_item['variation_id'] : $cart_item['product_id'];
// Use following line if lorem price is set at product level
// $id = $cart_item['product_id'];
$new_price = get_post_meta( $id, 'your_custom_meta_field', true ); // fetch price from custom field
$cart_item['data']->price = $new_price;
}
}
}
}
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