we do this on our website, here is the snippet code below however you also need to install the plugin advance custom fields create a new field named price per lb, in there field label is produce price type. field name is product_price_type (this field name must match as its in the code below), require NO, field type select, choices Per lb, allow null YES, the rest leave as is.
rules post taxonomy is qual to simple and also another one is equal to variable (simple or variable products) save!
then in each product you will see a NEW field to select PER LB, if you select that in the product, that item will be by the lb that you set in shipping weight.
add_filter( 'woocommerce_get_price_html', 'wb_change_product_html', 10, 2 );
// Adding a custom field to the price markup
function wb_change_product_html( $price, $product ) {
//$wb_price_type = get_field('product_price_type');
//~ print "<pre>".print_r($product, true)."</pre>";
//~ print "<pre>".print_r($product->get_price(), true)."</pre>";
$wb_price_type = get_post_meta( $product->get_id(), 'product_price_type', true);
if($wb_price_type) {
$price_html = '<span class="amount">' . $price . '<span class="woocommerce-Price-suffix"> ' . $wb_price_type . '</span></span>';
}
else {
$price_html = '<span class="amount">' . $price . '</span>';
}
return $price_html;
}
add_filter( 'woocommerce_cart_item_price', 'wb_change_product_price_cart', 10, 3 );
// Adding a custom field to the price in the cart
function wb_change_product_price_cart( $price, $cart_item, $cart_item_key ) {
$product_variation = $cart_item['data']->get_data();
$wb_price_type = get_post_meta( $cart_item['product_id'], 'product_price_type', true );
if ($wb_price_type) {
//~ $price = $price . ' ' . $wb_price_type;
$price = '<span class="amount_per_lb"><span class="woocommerce-Price-amount amount"><span class="woocommerce-Price-currencySymbol">' . get_woocommerce_currency_symbol() . '</span>' . $product_variation['price'] . '</span> ' . $wb_price_type. ' </span><span class="amount_per_pack">(' . $price . ' estimated)</span>';
}
else {
$price = $price;
}
return $price;
}
add_filter( 'woocommerce_checkout_cart_item_quantity', 'wb_checkout_review', 10, 3 );
// Adding a custom field to the price in the checkout items
function wb_checkout_review ( $quantity, $cart_item, $cart_item_key ) {
$product_variation = $cart_item['data']->get_data();
$wb_price_type = get_post_meta( $cart_item['product_id'], 'product_price_type', true);
if ( $wb_price_type ) {
$cart_item = ' ' . get_woocommerce_currency_symbol() . $product_variation['price'] . ' '. $wb_price_type . ' (' . get_woocommerce_currency_symbol() . $cart_item['data']->get_price() . ' estimated) ' . sprintf( '× %s ', $cart_item['quantity'] ) ;
}
else {
$cart_item = ' ' . sprintf( '× %s', $cart_item['quantity'] ) . '';
}
return $cart_item;
}
add_action( 'woocommerce_before_calculate_totals', 'modify_cart_price', 20000, 1);
function modify_cart_price( $cart_obj ) {
if ( is_admin() && ! defined( 'DOING_AJAX' ) || ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 ))
return;
foreach ( $cart_obj->get_cart() as $cart_item ) {
$var = get_post_meta( $cart_item['product_id'], '', true);
if($var['product_price_type'][0]){
$cart_item['data']->set_price( $cart_item['data']->get_price() * $cart_item['data']->get_weight() );
}
}
}
add_action( 'woocommerce_single_product_summary', 'set_var_on_single_product_page', 1 );
function set_var_on_single_product_page() {
global $product;
$wb_price_type = get_post_meta( $product->get_id(), 'product_price_type', true);
//~ print "<pre>".print_r($wb_price_type, true)."</pre>";
if ($wb_price_type){
print "<script> var per_lb = true;</script>";
}
else{
print "<script> var per_lb = false;</script>";
}
}
add_action( 'woocommerce_single_product_summary', 'set_sum_price_on_single_product_page', 11 );
function set_sum_price_on_single_product_page() {
global $product;
$wb_price_type = get_post_meta( $product->get_id(), 'product_price_type', true);
if ($wb_price_type && !$product->has_child()){
print "<span class='summ_price'><span class='amount'><span class='woocommerce-Price-amount amount'><span class='woocommerce-Price-currencySymbol'>$</span>". number_format($product->get_price() * $product->get_weight(), 2, '.', '') ."<span class='woocommerce-Price-suffix'> Estimated price based on total lbs</span></span></span></span>";
}
}
add_action( 'woocommerce_after_single_product', 'init_sum_price_on_single_product_page', 1 );
function init_sum_price_on_single_product_page() {
print "<script> summ_price_init();</script>";
}
