Add custom tax for each Manufacturer

[symfony4]

Hello,

 

I'm new to Prestashop and I need some guidance.

I need to implement the following feature for my shop:

 

In the category list, for each category, I need a link which open a new page with a list with all the Manufacturers of the products inside that category. For each manufacturer in the list, I need to display its name and a custom field (which is something like a tax). In this way, we are able to set the same tax for all the manufacturer's products inside a certain category. 

 

Now, I have experience with MVC's from PHP and Java, but for Prestashop things are a bit different, therefore some suggestions will be very welcomed.

 

From database point of view, I know I should create a table with Category ID, Manufacturer ID as foreign keys and tax value as separate column.

 

But I have not idea what to do next, where shall I create the route for this list and how to implement the database counterpart.

 

Thank you in advance