112 lines
4.1 KiB
Ruby
112 lines
4.1 KiB
Ruby
# == Schema Information
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#
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# Table name: groups
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#
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# id :integer not null, primary key
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# type :string(255) default(""), not null
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# name :string(255) default(""), not null
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# description :string(255)
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# account_balance :decimal(, ) default(0.0), not null
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# account_updated :datetime
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# created_on :datetime not null
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# role_admin :boolean not null
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# role_suppliers :boolean not null
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# role_article_meta :boolean not null
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# role_finance :boolean not null
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# role_orders :boolean not null
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# weekly_task :boolean
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# weekday :integer
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# task_name :string(255)
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# task_description :string(255)
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# task_required_users :integer default(1)
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# deleted_at :datetime
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# contact_person :string(255)
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# contact_phone :string(255)
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# contact_address :string(255)
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#
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# Ordergroups can order, they are "children" of the class Group
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#
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# Ordergroup have the following attributes, in addition to Group
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# * account_balance (decimal)
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# * account_updated (datetime)
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class Ordergroup < Group
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acts_as_paranoid # Avoid deleting the ordergroup for consistency of order-results
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extend ActiveSupport::Memoizable # Ability to cache method results. Use memoize :expensive_method
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serialize :stats
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has_many :financial_transactions, :order => "created_on DESC"
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has_many :group_orders
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has_many :orders, :through => :group_orders
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validates_numericality_of :account_balance, :message => 'ist keine gültige Zahl'
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after_create :update_stats!
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def contact
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"#{contact_phone} (#{contact_person})"
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end
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def non_members
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User.all(:order => 'nick').reject { |u| (users.include?(u) || u.ordergroup) }
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end
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def value_of_open_orders(exclude = nil)
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group_orders.open.reject{|go| go == exclude}.collect(&:price).sum
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end
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def value_of_finished_orders(exclude = nil)
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group_orders.finished.reject{|go| go == exclude}.collect(&:price).sum
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end
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# Returns the available funds for this order group (the account_balance minus price of all non-closed GroupOrders of this group).
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# * exclude (GroupOrder): exclude this GroupOrder from the calculation
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def get_available_funds(exclude = nil)
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account_balance - value_of_open_orders(exclude) - value_of_finished_orders(exclude)
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end
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memoize :get_available_funds
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# Creates a new FinancialTransaction for this Ordergroup and updates the account_balance accordingly.
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# Throws an exception if it fails.
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def add_financial_transaction(amount, note, user)
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transaction do
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trans = FinancialTransaction.new(:ordergroup => self, :amount => amount, :note => note, :user => user)
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trans.save!
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self.account_balance += trans.amount
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self.account_updated = trans.created_on
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save!
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notify_negative_balance(trans)
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end
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end
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def update_stats!
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time = 6.month.ago
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jobs = users.collect { |u| u.tasks.done.all(:conditions => ["updated_on > ?", time]).size }.sum
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orders_sum = group_orders.select { |go| !go.order.ends.nil? && go.order.ends > time }.collect(&:price).sum
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update_attribute(:stats, {:jobs_size => jobs, :orders_sum => orders_sum})
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end
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def avg_jobs_per_euro
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stats[:orders_sum] != 0 ? stats[:jobs_size].to_f / stats[:orders_sum].to_f : 0
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end
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# Global average
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def self.avg_jobs_per_euro
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stats = Ordergroup.all.collect(&:stats)
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stats.collect {|s| s[:jobs_size].to_f }.sum / stats.collect {|s| s[:orders_sum].to_f }.sum
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end
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private
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# If this order group's account balance is made negative by the given/last transaction,
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# a message is sent to all users who have enabled notification.
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def notify_negative_balance(transaction)
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# Notify only when order group had a positive balance before the last transaction:
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if (transaction.amount < 0 && self.account_balance < 0 && self.account_balance - transaction.amount >= 0)
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for user in users
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Mailer.deliver_negative_balance(user,transaction) if user.settings["notify.negativeBalance"] == '1'
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end
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end
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end
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end
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