Woocommerce specific price changing - woocommerce

Question

I have a problem with Woo-commerce and i think i m pretty close to find solution,
but have a bug :
My task is to make changes to woocommerce product default prices based on : username , specific product id and product category .
code is here :
`if ( is_user_logged_in() ) {
add_filter('woocommerce_get_price','change_price', 10, 2);
add_filter('woocommerce_get_regular_price','change_price', 10, 2);
add_filter('woocommerce_get_sale_price','change_price', 10, 2);
}
function change_price($price, $productd){
$vrednost=$productd->get_sku( );
$current_user = wp_get_current_user(); //uzimam trenutno logovanog korisnika
global $wpdb;
global $mydb;
global $cena;
$cena=$productd->price;
$mydb= new wpdb('root','','wordpress123','localhost');
$mydb->show_errors();
$userna=$current_user->user_login;
$paypal_id = $mydb->get_results("select sifra_kupca from wp_prodajno_mjesto WHERE user ='$userna'");
foreach ($paypal_id as $objs) {
$sifrovani=$objs->sifra_kupca;
}
$standard_rabat=$mydb->get_results("select standardni_rabat from wp_kupac WHERE sifra_kupca ='$sifrovani'");
foreach ($standard_rabat as $objs) {
$ispis=$objs->standardni_rabat;
}
$konacnorabat=$ispis;
$price =intval($productd->price)-((intval($ispis)/100)*$productd->price);
$ima=$mydb->get_results("select sifra_kupca from wp_cjenik_kupca WHERE sifra_kupca ='$sifrovani'");
foreach ($ima as $objs) {
$ispis7=$objs->sifra_kupca;
}
if ($ispis7==NULL)
{
return $price;
exit;
}
$grupa=$mydb->get_results("select grupa_artikala from wp_cjenik_kupca WHERE sifra_kupca ='$sifrovani'");
foreach ($grupa as $objs) {
$ispis4=$objs->grupa_artikala;
}
if (!($ispis4==NULL))
{
global $post;
$args = array( 'taxonomy' => 'product_cat',);
$terms = wp_get_post_terms($post->ID,'product_cat', $args);
$count = count($terms);
if ($count > 0) {
foreach ($terms as $term) {
$cata=$term->name;
}
}
$sifbaza=$productd->get_sku( );
$nc=$mydb->get_results("select cjenik_cijena from wp_cjenik_kupca WHERE (sifra_kupca ='$sifrovani' AND sifra_artikla='$sifbaza')");
foreach ($nc as $objs2) {
$novacen=$objs2->cjenik_cijena;
}
if (!($novacen==NULL))
{
$konacnoprice=$novacen;
$rabat2=$mydb->get_results("select cjenik_rabat from wp_cjenik_kupca WHERE (sifra_kupca ='$sifrovani' AND sifra_artikla='$sifbaza') ");
foreach ($rabat2 as $objs5) {
$konacnorabat=$objs5->cjenik_rabat;
}
}
else {
$konacnoprice=$productd->price;
$rabat3=$mydb->get_results("select cjenik_rabat from wp_cjenik_kupca WHERE (sifra_kupca ='$sifrovani' AND grupa_artikala='$cata') ");
foreach ($rabat3 as $objs5) {
$konacnirabat=$objs5->cjenik_rabat;
}
}
if (!($konacnirabat==NULL))
{$price='5000';return $price;
exit;}
else {$price=(intval($konacnoprice)-((intval($konacnorabat)/100)*intval($konacnoprice)));}
return $price;
exit;
}
}
`
Now i have problem in one case :
`if (!($konacnirabat==NULL))
{$price='5000';return $price;
exit;}`
So all the prices are correctly changed on shop page, but when i Add to Cart specific product where field $konacnirabat is not null , it gives me wrong price result in cart.
Here are also screenshots with database tables needed for this :
LINK

Answer 1

I faced the same problem in last few days and I have found solution - you should use different filters - one when product is adding to cart and one when price is getting from cart session. Here is where I found answer: source