Price slider bug on prestashop layered navigation module - prestashop

In layered navigation block module of a Prestashop 1.6 store I have activated the price filter option and configured it to show prices with tax.
However, on the frontend the filter are using prices without tax, which results in showing products outside of the price range selected by user.
How can I fix that?

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Hide Prices in Shopify with specific Tags

I Want to hide prices on the product page but only certain product that have a specific tag.
I am currently using an app to hide the prices but the app sometimes bug out and the prices are shown.

How to Add: TTC instead of HT in Prestashop

How i can Add TTC(including taxes) instead of HT(excluding taxes)
Screenshot
i use defaut theme in prestashop 1.6
Navigate to
Localization -> Taxes
and scroll down to Tax options section.
Activate Enable Tax and Display tax in the shopping cart options, if they are disabled. Save changes.
After that you need to configure a price display method for customer groups. Go to
Customers -> Groups
and click Edit on the group you want to modify.
Find Price display method option and select Price included. Save changes.

edit invoice template in module prestashop

I'm using press the shop version 1.7. I'm about to make a small module/add on, that will give border in product quantity cell in invoice if quantity is greater than 1. What are the possible ways to do this?
Use Hook actionPDFInvoiceRender to intercept template values and add a PDF override in your module to manage rendering.

Check condition when Add to car Button is clicked Prestashop

In my Prestashop web there are 3 types of products (In stock, On demand and Coming soon). When a user clicks on Add to cart button in product page, it should shows an alert saying the products cannot be mixed (you cannot buy a product in stock and a product on demand). I use BlockCart module but I cant find the file which I have to edit. Also, I have looked in CartController or ProductController but nothing.
Can you help me?
You Can check in controllers/front/CartController.php for processChangeProductInCart Function.

how to display final price without tax for products in prestashop admin panel?

how to display final price without tax in prestashop admin panel "Catalog=>Produts" page ?
I configured base price as zero for few products and configured its price via attributes.
In admin panel its showing zero as base price and final price with tax. I want to remove the tax added in the final price.(I want tax should be enabled, but don't want to display in page- see image).
I verified in admincontrollers.php file, but couldn't find where to change.can anyone help me please..
You need to edit the product controller of prestashop admin
your-prestashop-site//controllers/admin/AdminProductsController.php