Fixed Product Taxes (FPT) are not used from simple products

[apiuser]

Feature request from kanduvisla, posted on GitHub May 30, 2016

Steps to reproduce

1. Create a configurable product
2. Give it's child-products different FPT values
3. Add the product to the cart

Expected result

1. That the product in the cart has the FPT applied of the child product

Actual result

1. The FPT of the parent product (configurable) is applied instead.

[apiuser]

Comment from choukalos, posted on GitHub Jun 02, 2016

Hi @kanduvisla,

Our FPT/WEEE implementation is pretty simple. We only look at the product's attribute for what the WEEE fee is. That means for meta-products, such as configurable, bundled, grouped, we only see the meta-product's fee and not a roll up of the children's fee.

Internally I'm tracking this as a feature request (MAGETWO-53828).

[apiuser]

Comment from kanduvisla, posted on GitHub Jun 21, 2016

Is this feature going to be implemented in 2.1?

[apiuser]

Comment from choukalos, posted on GitHub Jun 21, 2016

No, it's way out there - buried in icebox; unless there's a massive deluge of interest/need for this it's likely to stay there.

On the other hand if some one wants to give us a PR we'd love to take it into mainline.

[apiuser]

Comment from kanduvisla, posted on GitHub Jun 23, 2016

I try to figure it out myself. Any pointers on where to look to manipulate FPT? Any events or plugin suggestions?

[apiuser]

Comment from kanduvisla, posted on GitHub Jun 24, 2016

I think I figured out a way to do this with only one plugin and one rewrite, but I'm not sure if it's solid enough. Anyway, I'll leave the link on how I did this here for future developers who might encounter the same situtation (untill Magento decides to take this feature request out of the icebox): https://gielberkers.com/properly-calculate-fptweee-configurable-products-magento-2/

[apiuser]

Comment from skymeissner, posted on GitHub Aug 21, 2016

This really needs to get a bug label. I can choose a tax rate for child products. But it is not used.

@kanduvisla I will try using your code and will post here if it works for me.