wip multi orders

app/models/multi_order.rb

@@ -0,0 +1,48 @@
+class MultiOrder < ApplicationRecord
+  has_many :orders, dependent: :nullify
+  has_many :order_articles, through: :orders
+  has_many :multi_group_orders, dependent: :destroy
+  has_many :group_orders, through: :multi_group_orders
+  has_many :ordergroups, through: :group_orders
+  #TODO: wenn groupOrderInvoice existiert, dann fehler schmeißen..
+  has_many :ordergroup_invoices, through: :group_orders
+
+  #make sure order has no multi_order_id
+  #make sure orders are not in a multi_order
+  before_create :check_orders
+
+  def name
+    orders.map(&:name).join(', ')
+  end
+
+  def closed?
+    orders.all?(&:closed?)
+  end
+
+  def stockit?
+    orders.all?(&:stockit?)
+  end
+
+  def updated_by
+    orders.map(&:updated_by).compact.first
+  end
+  def updated_at
+    orders.map(&:updated_at).compact.first
+  end
+  def foodcoop_result
+    orders.map(&:foodcoop_result).compact_blank.sum
+  end
+
+  private
+  def check_orders
+    orders.each do |order|
+      errors.add(:base, "Order #{order.name} is already in a multi order") unless order.multi_order_id.nil?
+      #closed==abgerechnet
+      errors.add(:base, "Order #{order.name} not closed") unless order.closed?
+    end
+    if errors.any?
+      errors.add(:base, "Cannot create multi order with unfinished orders")
+      raise ActiveRecord::Rollback
+    end
+  end
+end