Product with tax in Cart Attribute

[wzyefd]

Hi,
Thanks in advance.
I need a tax rule for all my products or some products in special category.
This tax rule should be Cart Attribute means customers could choose to buy this tax or not.
And this rule will be calculated by percent not add or minus.
How can I do?

[Maxim Pishnyak]

Did you already create product with mentioned by you cart attribute? Url?

[wzyefd]

Did you already create product with mentioned by you cart attribute? Url?

Sorry for my poor English.
I wanna made something Cart Variant like assurance,
If customer decided to buy this assurance,he/she should pay for this +10%.
Is there a way I made a Cart Variant that could ignore the tax calculation to get the final price?

[Maxim Pishnyak]

Is there a way I made a Cart Variant that could ignore the tax calculation to get the final price?

If you need to ignore tax calculation, you probably could don't use tax at all?

I wanna made something Cart Variant like assurance,

If you really want, you could do this and give us an url to the test product probably.

[wzyefd]

If you need to ignore tax calculation, you probably could don't use tax at all?

If there is a custom field that could works on specific categories,I will choose custom field.
But I hope this field could be added to product automatically,and contains the default value such as +10% not +10.

If you really want, you could do this and give us an url to the test product probably.

I have a test site on http://down4joomla.com/administrator
You could login with
user:test
passwd:*****(censored by mod)

I have created a custom field 'Assurance',but it was calculated simply  by +10. I don't know how to calculated by +10%.
Test product url:
test

Thanks for your help!

[Milbo]

If you want that your customfield appears automatically on some products, use product patterns (just an unpublished parent product). To use with a customfield a calculation by percentage, you must use a plugin. Take the textinput plugin and just adjust it to your needs.

[wzyefd]

If you want that your customfield appears automatically on some products, use product patterns (just an unpublished parent product). To use with a customfield a calculation by percentage, you must use a plugin. Take the textinput plugin and just adjust it to your needs.

Thanks,I will have a try!