Testing of the new "cart filters" issued by Shopify

new-cart-filters.liquid

{% # Cart filters testing %}
{% liquid
  # A small liquid snippet to compare the two new filters from what was possible before
  # See https://shopify.dev/docs/api/liquid/filters/cart-filters for reference
  # Quite redundant in my opinion as this is basically sugar but maybe they'll find their audience
  
  assign targetProduct = all_products['product-handle']
  assign productId = targetProduct.id
  assign targetVariant = targetProduct.selected_or_first_available_variant
  assign variantId = targetVariant.id
  
  assign oldVariantInCartQuantity = cart.items | where: 'variant_id', variantId | map: 'quantity' | sum
  assign newVariantInCartQuantity = cart | item_count_for_variant: variantId

  assign oldProductInCartList = cart.items | where: 'product_id', productId
  assign newProductInCartList = cart | line_items_for: targetProduct

  assign oldVariantInCartList = cart.items | where: 'variant_id', variantId
  assign newVariantInCartList = cart | line_items_for: targetVariant

  echo 'Product ID: ' | append: productId | append: '<br>'
  echo 'Variant ID: ' | append: variantId | append: '<br><br>'

  echo 'item_count_for_variant filter test:' | append: '<br>'
  echo 'Quantity of variant #' | append: variantId | append: ' in cart: ' | append: oldVariantInCartQuantity | append: '<br>'
  echo 'Quantity of variant #' | append: variantId | append: ' in cart: ' | append: newVariantInCartQuantity | append: '<br><br>'

  echo 'line_items_for filter for products test:' | append: '<br>'
  echo 'List of product #' | append: productId | append: ' items in cart: ' | append: oldProductInCartList | append: '<br>'
  echo 'List of product #' | append: productId | append: ' items in cart: ' | append: newProductInCartList | append: '<br><br>'

  echo 'line_items_for filter for variants test:' | append: '<br>'
  echo 'List of variant #' | append: variantId | append: ' items in cart: ' | append: oldVariantInCartList | append: '<br>'
  echo 'List of variant #' | append: variantId | append: ' items in cart: ' | append: newVariantInCartList | append: '<br><br>'
%}