foodsoft/app/models/order.rb

235 lines
9 KiB
Ruby

# == Schema Information
# Schema version: 20090120184410
#
# Table name: orders
#
# id :integer(4) not null, primary key
# supplier_id :integer(4)
# note :text
# starts :datetime
# ends :datetime
# state :string(255) default("open")
# lock_version :integer(4) default(0), not null
# updated_by_user_id :integer(4)
#
class Order < ActiveRecord::Base
extend ActiveSupport::Memoizable # Ability to cache method results. Use memoize :expensive_method
acts_as_ordered :order => "ends" # easyier find of next or previous model
# Associations
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"
belongs_to :supplier
belongs_to :updated_by, :class_name => "User", :foreign_key => "updated_by_user_id"
# Validations
validates_presence_of :supplier_id, :starts
validate_on_create :starts_before_ends, :include_articles
# Callbacks
after_update :update_price_of_group_orders
# Finders
named_scope :open, :conditions => { :state => 'open' },
:order => 'ends DESC'
named_scope :finished, :conditions => "state = 'finished' OR state = 'closed'",
:order => 'ends DESC'
named_scope :finished_not_closed, :conditions => { :state => 'finished' },
:order => 'ends DESC'
named_scope :closed, :conditions => { :state => 'closed' },
:order => 'ends DESC'
# Create or destroy OrderArticle associations on create/update
def article_ids=(ids)
# fetch selected articles
articles_list = Article.find(ids)
# create new order_articles
(articles_list - articles).each { |article| order_articles.build(: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
def open?
state == "open"
end
def finished?
state == "finished"
end
def closed?
state == "closed"
end
# search GroupOrder of given Ordergroup
def group_order(ordergroup)
group_orders.first :conditions => { :ordergroup_id => ordergroup.id }
end
# 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 get_articles
order_articles.all(:include => [:article, :article_price], :order => 'articles.name').group_by { |a|
a.article.article_category.name
}.sort { |a, b| a[0] <=> b[0] }
end
memoize :get_articles
# Returns the defecit/benefit for the foodcoop
# Requires a valid invoice, belonging to this order
def profit(options = {})
markup = options[:with_markup] || true
if invoice
groups_sum = markup ? sum(:groups) : sum(:groups_without_markup)
groups_sum - invoice.net_amount
end
end
# 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
if type == :clear || type == :gross || type == :fc
for oa in order_articles.ordered.all(:include => [:article,:article_price])
quantity = oa.units_to_order * oa.price.unit_quantity
case type
when :clear
total += quantity * oa.price.price
when :gross
total += quantity * oa.price.gross_price
when :fc
total += quantity * oa.price.fc_price
end
end
elsif type == :groups || type == :groups_without_markup
for go in group_orders
for goa in go.group_order_articles
case type
when :groups
total += goa.quantity * goa.order_article.price.fc_price
when :groups_without_markup
total += goa.quantity * goa.order_article.price.gross_price
end
end
end
end
total
end
# Finishes this order. This will set the order state to "finish" and the end property to the current time.
# Ignored if the order is already finished.
def finish!(user)
unless finished?
Order.transaction do
# Update order_articles. Save the current article_price to keep price consistency
order_articles.all(:include => :article).each do |oa|
oa.update_attribute(:article_price, oa.article.article_prices.first)
end
# set new order state (needed by notify_order_finished)
update_attributes(:state => 'finished', :ends => Time.now, :updated_by => user)
# TODO: delete data, which is no longer required ...
# group_order_article_quantities... order_articles with units_to_order == 0 ? ...
end
# notify order groups
notify_order_finished
end
end
# TODO: I can't understand, why its going out from the group_order_articles perspective.
# Why we can't just iterate through the order_articles?
#
# Updates the ordered quantites of all OrderArticles from the GroupOrderArticles.
# This method is fired after an ordergroup has saved/updated his order.
def update_quantities
indexed_order_articles = {} # holds the list of updated OrderArticles indexed by their id
# Get all GroupOrderArticles for this order and update OrderArticle.quantity/.tolerance/.units_to_order from them...
group_order_articles = GroupOrderArticle.all(:conditions => ['group_order_id IN (?)', group_order_ids],
:include => [:order_article])
for goa in group_order_articles
if (order_article = indexed_order_articles[goa.order_article.id.to_s])
# order_article has already been fetched, just update...
order_article.quantity = order_article.quantity + goa.quantity
order_article.tolerance = order_article.tolerance + goa.tolerance
order_article.units_to_order = order_article.article.calculate_order_quantity(order_article.quantity, order_article.tolerance)
else
# First update to OrderArticle, need to store in orderArticle hash...
order_article = goa.order_article
order_article.quantity = goa.quantity
order_article.tolerance = goa.tolerance
order_article.units_to_order = order_article.article.calculate_order_quantity(order_article.quantity, order_article.tolerance)
indexed_order_articles[order_article.id.to_s] = order_article
end
end
# Commit changes to database...
OrderArticle.transaction do
indexed_order_articles.each_value { | value | value.save! }
end
end
# Sets order.status to 'close' and updates all Ordergroup.account_balances
def close!(user)
raise "Bestellung wurde schon abgerechnet" if closed?
transaction_note = "Bestellung: #{supplier.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.addFinancialTransaction(price, transaction_note, user)
end
self.update_attributes! :state => 'closed', :updated_by => user
end
end
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
errors.add(:order_articles, "Es muss mindestens ein Artikel ausgewählt sein") if order_articles.empty?
end
private
# 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
# Sends "order finished" messages to users who have participated in this order.
def notify_order_finished
for group_order in self.group_orders
ordergroup = group_order.ordergroup
logger.debug("Send 'order finished' message to #{ordergroup.name}")
# Determine users that want a notification message:
users = ordergroup.users.reject{|u| u.settings["notify.orderFinished"] != '1'}
unless users.empty?
# Create user notification messages:
Message.from_template(
'order_finished',
{:group => ordergroup, :order => self, :group_order => group_order},
{:recipients_ids => users.collect(&:id), :subject => "Bestellung beendet: #{supplier.name}"}
).save!
end
end
end
end