foodsoft/app/models/order.rb

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# encoding: utf-8
#
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class Order < ActiveRecord::Base
# Associations
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has_many :order_articles, :dependent => :destroy
has_many :articles, :through => :order_articles
has_many :group_orders, :dependent => :destroy
has_many :ordergroups, :through => :group_orders
has_one :invoice
has_many :comments, :class_name => "OrderComment", :order => "created_at"
has_many :stock_changes
belongs_to :supplier
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belongs_to :updated_by, :class_name => 'User', :foreign_key => 'updated_by_user_id'
belongs_to :created_by, :class_name => 'User', :foreign_key => 'created_by_user_id'
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# Validations
validates_presence_of :starts
validate :starts_before_ends, :include_articles
# Callbacks
after_save :save_order_articles, :update_price_of_group_orders
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# Finders
scope :open, where(state: 'open').order('ends DESC')
scope :finished, where("orders.state = 'finished' OR orders.state = 'closed'").order('ends DESC')
scope :finished_not_closed, where(state: 'finished').order('ends DESC')
scope :closed, where(state: 'closed').order('ends DESC')
scope :stockit, where(supplier_id: 0).order('ends DESC')
def stockit?
supplier_id == 0
end
def name
stockit? ? "Lager" : supplier.name
end
def articles_for_ordering
if stockit?
# make sure to include those articles which are no longer available
# but which have already been ordered in this stock order
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StockArticle.available.all(:include => :article_category,
:order => 'article_categories.name, articles.name').reject{ |a|
a.quantity_available <= 0 and not a.ordered_in_order?(self)
}.group_by { |a| a.article_category.name }
else
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supplier.articles.available.all.group_by { |a| a.article_category.name }
end
end
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# Save ids, and create/delete order_articles after successfully saved the order
def article_ids=(ids)
@article_ids = ids
end
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def article_ids
@article_ids ||= order_articles.map(&:article_id)
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end
def open?
state == "open"
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end
def finished?
state == "finished"
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end
def closed?
state == "closed"
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end
def expired?
!ends.nil? && ends < Time.now
end
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# search GroupOrder of given Ordergroup
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def group_order(ordergroup)
group_orders.where(:ordergroup_id => ordergroup.id).first
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end
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# Returns OrderArticles in a nested Array, grouped by category and ordered by article name.
# The array has the following form:
# e.g: [["drugs",[teethpaste, toiletpaper]], ["fruits" => [apple, banana, lemon]]]
def articles_grouped_by_category
@articles_grouped_by_category ||= order_articles.
includes([:article_price, :group_order_articles, :article => :article_category]).
order('articles.name').
group_by { |a| a.article.article_category.name }.
sort { |a, b| a[0] <=> b[0] }
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end
def articles_sort_by_category
order_articles.all(:include => [:article], :order => 'articles.name').sort do |a,b|
a.article.article_category.name <=> b.article.article_category.name
end
end
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# Returns the defecit/benefit for the foodcoop
# Requires a valid invoice, belonging to this order
#FIXME: Consider order.foodcoop_result
def profit(options = {})
markup = options[:without_markup] || false
if invoice
groups_sum = markup ? sum(:groups_without_markup) : sum(:groups)
groups_sum - invoice.net_amount
end
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end
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# Returns the all round price of a finished order
# :groups returns the sum of all GroupOrders
# :clear returns the price without tax, deposit and markup
# :gross includes tax and deposit. this amount should be equal to suppliers bill
# :fc, guess what...
def sum(type = :gross)
total = 0
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if type == :net || type == :gross || type == :fc
for oa in order_articles.ordered.includes(:article, :article_price)
quantity = oa.units_to_order * oa.price.unit_quantity
case type
when :net
total += quantity * oa.price.price
when :gross
total += quantity * oa.price.gross_price
when :fc
total += quantity * oa.price.fc_price
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end
end
elsif type == :groups || type == :groups_without_markup
for go in group_orders.includes(group_order_articles: {order_article: [:article, :article_price]})
for goa in go.group_order_articles
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case type
when :groups
total += goa.result * goa.order_article.price.fc_price
when :groups_without_markup
total += goa.result * goa.order_article.price.gross_price
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end
end
end
end
total
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end
# 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.
def finish!(user)
unless finished?
Order.transaction do
# set new order state (needed by notify_order_finished)
update_attributes(:state => 'finished', :ends => Time.now, :updated_by => user)
# Update order_articles. Save the current article_price to keep price consistency
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# Also save results for each group_order_result
# Clean up
order_articles.all(:include => :article).each do |oa|
oa.update_attribute(:article_price, oa.article.article_prices.first)
oa.group_order_articles.each do |goa|
goa.save_results!
# Delete no longer required order-history (group_order_article_quantities) and
# TODO: Do we need articles, which aren't ordered? (units_to_order == 0 ?)
goa.group_order_article_quantities.clear
end
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end
# Update GroupOrder prices
group_orders.each(&:update_price!)
# Stats
ordergroups.each(&:update_stats!)
# Notifications
Resque.enqueue(UserNotifier, FoodsoftConfig.scope, 'finished_order', self.id)
end
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end
end
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# Sets order.status to 'close' and updates all Ordergroup.account_balances
def close!(user)
raise "Bestellung wurde schon abgerechnet" if closed?
transaction_note = "Bestellung: #{name}, bis #{ends.strftime('%d.%m.%Y')}"
gos = group_orders.all(:include => :ordergroup) # Fetch group_orders
gos.each { |group_order| group_order.update_price! } # Update prices of group_orders
transaction do # Start updating account balances
for group_order in gos
price = group_order.price * -1 # decrease! account balance
group_order.ordergroup.add_financial_transaction!(price, transaction_note, user)
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end
if stockit? # Decreases the quantity of stock_articles
for oa in order_articles.all(:include => :article)
oa.update_results! # Update units_to_order of order_article
stock_changes.create! :stock_article => oa.article, :quantity => oa.units_to_order*-1
end
end
self.update_attributes! :state => 'closed', :updated_by => user, :foodcoop_result => profit
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end
end
# Close the order directly, without automaticly updating ordergroups account balances
def close_direct!(user)
raise "Bestellung wurde schon abgerechnet" if closed?
update_attributes! state: 'closed', updated_by: user
end
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protected
def starts_before_ends
errors.add(:ends, "muss nach dem Bestellstart liegen (oder leer bleiben)") if (ends && starts && ends <= starts)
end
def include_articles
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errors.add(:articles, "Es muss mindestens ein Artikel ausgewählt sein") if article_ids.empty?
end
def save_order_articles
#self.articles = Article.find(article_ids) # This doesn't deletes the group_order_articles, belonging to order_articles,
# # see http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html#method-i-has_many
#
## Ensure to delete also the group_order_articles, belonging to order_articles
## This case is relevant, when removing articles from a running order
#goa_ids = GroupOrderArticle.where(group_order_id: group_order_ids).includes(:order_article).
# select { |goa| goa.order_article.nil? }.map(&:id)
#GroupOrderArticle.delete_all(id: goa_ids) unless goa_ids.empty?
# fetch selected articles
articles_list = Article.find(article_ids)
# create new order_articles
(articles_list - articles).each { |article| order_articles.create(:article => article) }
# delete old order_articles
articles.reject { |article| articles_list.include?(article) }.each do |article|
order_articles.detect { |order_article| order_article.article_id == article.id }.destroy
end
end
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private
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# Updates the "price" attribute of GroupOrders or GroupOrderResults
# This will be either the maximum value of a current order or the actual order value of a finished order.
def update_price_of_group_orders
group_orders.each { |group_order| group_order.update_price! }
end
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end