Change product price with a plugin

[mesie]

Hi,

i'm trying to change the price of a product in the cart with the help of a system plugin that i have created.
I've managed to change the the total and the the total discount of the cart but not the product's discount and price.

i set for example

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$cart->pricesUnformatted[$key]['discountAmount']=2; where $key is the product id.
At the end of the function i add

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$calculator->setCartPrices($cart->pricesUnformatted);

The issue is that the total cart prices change, but the product's no.

Any suggestions?

[PRO]

why a system plugin & not a customfield plugin?

[mesie]

not sure 
I 've created a system plugin with a function

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function plgVmOnCheckoutAdvertise

[PRO]

maybe you need to


$cart->product

or something similar, if you are changing the total

- probably spam -ample in a shipping plugin you do

foreach ($cart->products as $product) {
         modify here
      }

[mesie]

On this foreach loop i change the discountAmount of the product. If i var_dump the cart i see the changed discount but it is not added on cart

[PRO]

what happens when you refresh the page?

explain what your system plugin does?

[mesie]

It checks if a user belongs to a specific user group and if yes it applies a discount.
The issue is that i want to exclude some products from this discount.

The discount is applied on cart without any issue. But the discount on product doesn't.

[GJC Web Design]

It checks if a user belongs to a specific user group and if yes it applies a discount.
The issue is that i want to exclude some products from this discount.

surely a standard discount (tax & calc rule)  applied to a shoppergroup and certain categories will do this?

[mesie]

The extra thing is that the plugin checks the total and then it applies the discount. This is something that the standard virtuemart rules cannot do.

[GJC Web Design]

negative tax per bill?  haven't tried...

[mesie]

nope.
The question still remains. Why VM Cart doesn't accept the discount i apply, as soon as the discount in cart is acceptable?

[PRO]

in my quantity discount plugin
I change the price of a product like this

   if ($product->quantity >=$qdisc[0] && $product->quantity<=$qdisc[1])
{$product->allPrices[$product->selectedPrice]["product_price"]=$product->allPrices[$product->selectedPrice]["product_price"]-$customfield->pdisc;}


But, it is in a product custom plugin,
in function    plgVmPrepareCartProduct


can you modify anything about the product ? change the sku? , name etc?

How are you trying to modify it?

[mesie]

Well i have this code

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$cart->pricesUnformatted[$key]['discountAmount']=2;
for example to add the discount to the current product where $key is the product key.

I can see the new discount amount if i dump the $cart but it's not applied on cart.

I cannot change anything on cart. Everything i change this way, i see it in the dump but is not applied.

[PRO]

I dont know what to tell you, I know this can be done with a product plugin