Strip shipping method mechanics out of LineItem and Order

app/models/spree/line_item_decorator.rb

@@ -1,28 +1,3 @@
 Spree::LineItem.class_eval do
   attr_accessible :max_quantity
-
-  before_create :set_distribution_fee
-
-
-  def update_distribution_fee_without_callbacks!(distributor)
-    set_distribution_fee(distributor)
-    update_column(:distribution_fee, distribution_fee)
-    update_column(:shipping_method_name, shipping_method_name)
-  end
-
-
-  private
-
-  def shipping_method(distributor=nil)
-    distributor ||= self.order.distributor
-    self.product.shipping_method_for_distributor(distributor)
-  end
-
-  def set_distribution_fee(distributor=nil)
-    order = OpenStruct.new :line_items => [self]
-    sm = shipping_method(distributor)
-
-    self.distribution_fee = sm.compute_amount(order)
-    self.shipping_method_name = sm.name
-  end
 end

app/models/spree/order_decorator.rb

@@ -9,13 +9,11 @@ Spree::Order.class_eval do
   belongs_to :distributor, :class_name => 'Enterprise'
   belongs_to :cart
 
-  before_validation :shipping_address_from_distributor
   validate :products_available_from_new_distribution, :if => lambda { distributor_id_changed? || order_cycle_id_changed? }
   attr_accessible :order_cycle_id, :distributor_id
 
   before_validation :shipping_address_from_distributor
-  before_save :update_line_item_shipping_methods
-  after_create :set_default_shipping_method
+
 
   # -- Scopes
   scope :managed_by, lambda { |user|
@@ -43,12 +41,6 @@ Spree::Order.class_eval do
     save!
   end
 
-  def empty!
-    line_items.destroy_all
-    adjustments.destroy_all
-    set_default_shipping_method
-  end
-
   def set_distributor!(distributor)
     self.distributor = distributor
     self.order_cycle = nil unless self.order_cycle.andand.has_distributor? distributor
@@ -86,27 +78,6 @@ Spree::Order.class_eval do
 
   private
 
-  # On creation of the order (when the first item is added to the user's cart), set the
-  # shipping method to the first one available and create a shipment.
-  # order.create_shipment! creates an adjustment for the shipping cost on the order,
-  # which means that the customer can see their shipping cost at every step of the
-  # checkout process, not just after the delivery step.
-  # This is based on the assumption that there's only one shipping method visible to the user,
-  # which is a method using the itemwise shipping calculator.
-  def set_default_shipping_method
-    self.shipping_method = itemwise_shipping_method
-    if self.shipping_method
-      self.save!
-      self.create_shipment!
-    else
-      raise 'No default shipping method found'
-    end
-  end
-
-  def itemwise_shipping_method
-    Spree::ShippingMethod.all.find { |sm| sm.calculator.is_a? OpenFoodWeb::Calculator::Itemwise }
-  end
-
   def shipping_address_from_distributor
     if distributor
       self.ship_address = distributor.address.clone
@@ -119,13 +90,6 @@ Spree::Order.class_eval do
     end
   end
 
-  def update_line_item_shipping_methods
-    if %w(cart address delivery resumed).include? state
-      self.line_items.each { |li| li.update_distribution_fee_without_callbacks!(distributor) }
-      self.update!
-    end
-  end
-
   def product_distribution_for(line_item)
     line_item.variant.product.product_distribution_for self.distributor
   end

spec/models/order_spec.rb

@@ -1,19 +1,6 @@
 require 'spec_helper'
 
 describe Spree::Order do
-  it "initialises a default shipping method after creation" do
-    shipping_method_regular = create(:shipping_method)
-    shipping_method_itemwise = create(:itemwise_shipping_method)
-
-    subject.shipping_method.should be_nil
-    subject.adjustments.should be_empty
-
-    subject.save!
-
-    subject.shipping_method.should == shipping_method_itemwise
-    subject.adjustments.where(:label => "Shipping").should be_present
-  end
-
   it "sets attributes on line items for variants" do
     d = create(:distributor_enterprise)
     p = create(:product, :distributors => [d])