I want to be disable discount codes for product with specific tag using by Product Discount Function API（Shopify functions with Javascript）
The following is implemented using Shopify scripts.
Since I moved to checkout extensibility, Shopify scripts are no longer available, so I would like to implement it with Shopify functions.
Please tell me how do I if it is possible.
# ================================ Customizable Settings ================================
# ================================================================
# Disable Discount Code(s) For Products
#
# If any matching discount codes are used, and any matching items
# are in the cart, the discount code is rejected with the entered
# message.
#
# - 'discount_code_match_type' determines whether the below
# strings should be an exact or partial match. Can be:
# - ':exact' for an exact match
# - ':partial' for a partial match
# - 'discount_codes' is a list of strings to identify discount
# codes
# - 'product_selector_match_type' determines whether we look for
# products that do or don't match the entered selectors. Can
# be:
# - ':include' to check if the product does match
# - ':exclude' to make sure the product doesn't match
# - 'product_selector_type' determines how eligible products
# will be identified. Can be either:
# - ':tag' to find products by tag
# - ':type' to find products by type
# - ':vendor' to find products by vendor
# - ':product_id' to find products by ID
# - ':variant_id' to find products by variant ID
# - ':subscription' to find subscription products
# - ':all' for all products
# - 'product_selectors' is a list of identifiers (from above)
# for qualifying products. Product/Variant ID lists should
# only contain numbers (ie. no quotes). If ':all' is used,
# this can also be 'nil'.
# - 'rejection_message' is the message to show when a discount
# code is rejected
# ================================================================
REJECT_DISCOUNT_CODE_FOR_PRODUCTS = [
{
discount_code_match_type: :exact,
discount_codes: ["NOCOUPON"],
product_selector_match_type: :include,
product_selector_type: :tag,
product_selectors: ["NOCOUPON"],
rejection_message: "Error message"
}
]
# ================================ Script Code (do not edit) ================================
# ================================================================
# DiscountCodeSelector
#
# Finds whether the supplied discount code matches any of the
# entered codes.
# ================================================================
class DiscountCodeSelector
def initialize(match_type, discount_codes)
@comparator = match_type == :exact ? '==' : 'include?'
_codes = discount_codes.map { |discount_code| discount_code.upcase.strip }
end
def match?(discount_code)
_codes.any? { |code| discount_code.code.upcase.send(@comparator, code) }
end
end
# ================================================================
# ProductSelector
#
# Finds matching products by the entered criteria.
# ================================================================
class ProductSelector
def initialize(match_type, selector_type, selectors)
_type = match_type
@comparator = match_type == :include ? 'any?' : 'none?'
_type = selector_type
@selectors = selectors
end
def match?(line_item)
if self.respond_to?(@selector_type)
self.send(@selector_type, line_item)
else
raise RuntimeError.new('Invalid product selector type')
end
end
def tag(line_item)
product_tags = line_item.variant.product.tags.map { |tag| tag.downcase.strip }
@selectors = @selectors.map { |selector| selector.downcase.strip }
(@selectors & product_tags).send(@comparator)
end
def type(line_item)
@selectors = @selectors.map { |selector| selector.downcase.strip }
(@match_type == :include) == @selectors.include?(line_item.variant.product.product_type.downcase.strip)
end
def vendor(line_item)
@selectors = @selectors.map { |selector| selector.downcase.strip }
(@match_type == :include) == @selectors.include?(line_item.variant.product.vendor.downcase.strip)
end
def product_id(line_item)
(@match_type == :include) == @selectors.include?(line_item.variant.product.id)
end
def variant_id(line_item)
(@match_type == :include) == @selectors.include?(line_item.variant.id)
end
def subscription(line_item)
!line_item.selling_plan_id.nil?
end
def all(line_item)
true
end
end
# ================================================================
# DisableDiscountCodesForProductsCampaign
#
# If any matching discount codes are used, and any matching items
# are in the cart, the discount code is rejected with the entered
# message.
# ================================================================
class DisableDiscountCodesForProductsCampaign
def initialize(campaigns)
@campaigns = campaigns
end
def run(cart)
return if cart.discount_code.nil?
@campaigns.each do |campaign|
product_selector = ProductSelector.new(
campaign[:product_selector_match_type],
campaign[:product_selector_type],
campaign[:product_selectors],
)
next unless cart.line_items.any? { |line_item| product_selector.match?(line_item) }
cart.discount_code.reject(message: campaign[:rejection_message])
end
end
end
CAMPAIGNS = [
DisableDiscountCodesForProductsCampaign.new(REJECT_DISCOUNT_CODE_FOR_PRODUCTS),
]
CAMPAIGNS.each do |campaign|
campaign.run(Input.cart)
end
Output.cart = Input.cart
