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module Spree
module AdjustmentSource
extend ActiveSupport::Concern
included do
has_many :adjustments, as: :source
before_destroy :deals_with_adjustments_for_deleted_source
end
protected
def create_adjustment(order, adjustable, included = nil)
amount = compute_amount(adjustable)
return if amount == 0
adjustments.new(order: order,
adjustable: adjustable,
label: label,
amount: amount,
included: included).save
end
def create_unique_adjustment(order, adjustable)
return if already_adjusted?(adjustable)
create_adjustment(order, adjustable)
end
def create_unique_adjustments(order, adjustables)
adjustables.where.not(id: already_adjusted_ids(order)).map do |adjustable|
create_adjustment(order, adjustable) if !block_given? || yield(adjustable)
end.any?
end
private
def already_adjusted_ids(order)
adjustments.where(order: order).pluck(:adjustable_id)
end
def already_adjusted?(adjustable)
adjustments.where(adjustable: adjustable).exists?
end
def deals_with_adjustments_for_deleted_source
# For incomplete orders, remove the adjustment completely.
adjustments.for_incomplete_order.destroy_all
# For complete orders, the source will be invalid.
# Therefore we nullify the source_id, leaving the adjustment in place.
# This would mean that the order's total is not altered at all.
adjustments.for_complete_order.update_all(source_id: nil, updated_at: Time.current)
end
end
end
Version data entries
23 entries across 23 versions & 1 rubygems