2009-01-08 16:33:27 +01:00
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# == Schema Information
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2009-02-02 16:35:43 +01:00
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# Schema version: 20090119155930
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2009-01-08 16:33:27 +01:00
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#
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# Table name: orders
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#
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# id :integer not null, primary key
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# supplier_id :integer
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# note :text
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# starts :datetime
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# ends :datetime
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# state :string(255) default("open")
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# lock_version :integer default(0), not null
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# updated_by_user_id :integer
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#
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class Order < ActiveRecord::Base
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extend ActiveSupport::Memoizable # Ability to cache method results. Use memoize :expensive_method
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acts_as_ordered :order => "ends" # easyier find of next or previous model
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# Associations
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has_many :order_articles, :dependent => :destroy
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has_many :articles, :through => :order_articles
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has_many :group_orders, :dependent => :destroy
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has_many :ordergroups, :through => :group_orders
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has_one :invoice
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has_many :comments, :class_name => "OrderComment", :order => "created_at"
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has_many :stock_changes
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belongs_to :supplier
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belongs_to :updated_by, :class_name => "User", :foreign_key => "updated_by_user_id"
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# Validations
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validates_presence_of :starts
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validate :starts_before_ends, :include_articles
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# Callbacks
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after_update :update_price_of_group_orders
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# Finders
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named_scope :open, :conditions => {:state => 'open'}, :order => 'ends DESC'
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named_scope :finished, :conditions => "state = 'finished' OR state = 'closed'", :order => 'ends DESC'
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named_scope :finished_not_closed, :conditions => {:state => 'finished'}, :order => 'ends DESC'
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named_scope :closed, :conditions => {:state => 'closed'}, :order => 'ends DESC'
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named_scope :stockit, :conditions => {:supplier_id => 0}, :order => 'ends DESC'
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def stockit?
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supplier_id == 0
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end
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def name
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stockit? ? "Lager" : supplier.name
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end
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def articles_for_ordering
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if stockit?
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StockArticle.available.without_deleted(:include => :article_category,
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:order => 'article_categories.name, articles.name').reject{ |a|
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a.quantity_available == 0
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}.group_by { |a| a.article_category.name }
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else
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supplier.articles.available.without_deleted.group_by { |a| a.article_category.name }
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end
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end
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# Fetch last orders from same supplier, to generate an article selection proposal
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def templates
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if stockit?
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Order.stockit :limit => 5
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else
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supplier.orders.finished :limit => 5
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end
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end
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# Create or destroy OrderArticle associations on create/update
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def article_ids=(ids)
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# fetch selected articles
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articles_list = Article.find(ids)
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# create new order_articles
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(articles_list - articles).each { |article| order_articles.build(:article => article) }
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# delete old order_articles
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articles.reject { |article| articles_list.include?(article) }.each do |article|
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order_articles.detect { |order_article| order_article.article_id == article.id }.destroy
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end
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end
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def open?
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state == "open"
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end
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def finished?
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state == "finished"
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end
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def closed?
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state == "closed"
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end
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# search GroupOrder of given Ordergroup
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def group_order(ordergroup)
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group_orders.first :conditions => { :ordergroup_id => ordergroup.id }
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end
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# Returns OrderArticles in a nested Array, grouped by category and ordered by article name.
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# The array has the following form:
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# e.g: [["drugs",[teethpaste, toiletpaper]], ["fruits" => [apple, banana, lemon]]]
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def articles_grouped_by_category
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order_articles.all(:include => [:article, :article_price], :order => 'articles.name').group_by { |a|
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a.article.article_category.name
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}.sort { |a, b| a[0] <=> b[0] }
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end
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memoize :articles_grouped_by_category
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def articles_sort_by_category
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order_articles.all(:include => [:article], :order => 'articles.name').sort do |a,b|
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a.article.article_category.name <=> b.article.article_category.name
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end
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end
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# Returns the defecit/benefit for the foodcoop
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# Requires a valid invoice, belonging to this order
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def profit(options = {})
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markup = options[:with_markup] || true
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if invoice
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groups_sum = markup ? sum(:groups) : sum(:groups_without_markup)
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groups_sum - invoice.net_amount
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end
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end
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# Returns the all round price of a finished order
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# :groups returns the sum of all GroupOrders
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# :clear returns the price without tax, deposit and markup
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# :gross includes tax and deposit. this amount should be equal to suppliers bill
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# :fc, guess what...
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def sum(type = :gross)
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total = 0
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if type == :net || type == :gross || type == :fc
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for oa in order_articles.ordered.all(:include => [:article,:article_price])
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quantity = oa.units_to_order * oa.price.unit_quantity
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case type
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when :net
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total += quantity * oa.price.price
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when :gross
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total += quantity * oa.price.gross_price
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when :fc
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total += quantity * oa.price.fc_price
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end
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end
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elsif type == :groups || type == :groups_without_markup
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for go in group_orders
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for goa in go.group_order_articles
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case type
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when :groups
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total += goa.result * goa.order_article.price.fc_price
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when :groups_without_markup
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total += goa.result * goa.order_article.price.gross_price
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end
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end
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end
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end
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total
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end
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# Finishes this order. This will set the order state to "finish" and the end property to the current time.
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# Ignored if the order is already finished.
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def finish!(user)
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unless finished?
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Order.transaction do
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# Update order_articles. Save the current article_price to keep price consistency
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# Also save results for each group_order_result
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order_articles.all(:include => :article).each do |oa|
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oa.update_attribute(:article_price, oa.article.article_prices.first)
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oa.group_order_articles.each { |goa| goa.save_results! }
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end
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# Update GroupOrder prices
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group_orders.each { |go| go.update_price! }
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# set new order state (needed by notify_order_finished)
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update_attributes(:state => 'finished', :ends => Time.now, :updated_by => user)
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# Clean up
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# Delete no longer required order-history (group_order_article_quantities) and
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# TODO: Do we need articles, which aren't ordered? (units_to_order == 0 ?)
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order_articles.each do |oa|
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oa.group_order_articles.each { |goa| goa.group_order_article_quantities.clear }
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end
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end
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end
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end
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# Sets order.status to 'close' and updates all Ordergroup.account_balances
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def close!(user)
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raise "Bestellung wurde schon abgerechnet" if closed?
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transaction_note = "Bestellung: #{name}, bis #{ends.strftime('%d.%m.%Y')}"
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gos = group_orders.all(:include => :ordergroup) # Fetch group_orders
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gos.each { |group_order| group_order.update_price! } # Update prices of group_orders
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transaction do # Start updating account balances
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for group_order in gos
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price = group_order.price * -1 # decrease! account balance
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group_order.ordergroup.add_financial_transaction(price, transaction_note, user)
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end
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if stockit? # Decreases the quantity of stock_articles
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for oa in order_articles.all(:include => :article)
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oa.update_results! # Update units_to_order of order_article
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stock_changes.create! :stock_article => oa.article, :quantity => oa.units_to_order*-1
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end
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end
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self.update_attributes! :state => 'closed', :updated_by => user
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end
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end
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protected
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def starts_before_ends
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errors.add(:ends, "muss nach dem Bestellstart liegen (oder leer bleiben)") if (ends && starts && ends <= starts)
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end
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def include_articles
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errors.add(:order_articles, "Es muss mindestens ein Artikel ausgewählt sein") if order_articles.empty?
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end
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private
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# Updates the "price" attribute of GroupOrders or GroupOrderResults
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# This will be either the maximum value of a current order or the actual order value of a finished order.
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def update_price_of_group_orders
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group_orders.each { |group_order| group_order.update_price! }
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end
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2009-01-06 11:49:19 +01:00
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end
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