Add Custom Product attributes to minicart template

[Zaylril]

So in the minicart template in web/template/minicart/item/default.html you have the following code:

<a data-bind="attr: {href: product_url, title: product_name}, text: product_name"></a>

What I want to do is add a custom product attribute to this, as well as maybe some default existing ones such as weight for example.

I know how the template can be modified to display the data I'm just not sure how i can assign custom data to the KO js var I need.

Thanks

[mslabko]

Currently we store private data in local storage and render it using ko templates.
Classes responsible for retrieving private data should be placed in namespace "Vendor/ModuleName/CustomerData" and implement \Magento\Customer\Model\CustomerData\SectionSourceInterface interface.

The following class is used for retrieving private data for mini-cart: \Magento\Checkout\CustomerData\Cart

\Magento\Checkout\CustomerData\ItemInterface is responsible for retrieving data for each item in the shopping cart

So, for your case you need to create plugin for \Magento\Checkout\CustomerData\DefaultItem::getItemData and extend data.
After that in template web/template/minicart/item/default.html new data will be accessible