Class: Deb::Transaction

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/deb/transaction.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.start(&block) ⇒ Object 



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# File 'app/models/deb/transaction.rb', line 17

def self.start(&block)
  Docile.dsl_eval(Deb::Builder.new, &block).build
end

.start!(&block) ⇒ Object 



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# File 'app/models/deb/transaction.rb', line 31

def self.start!(&block)
  transaction do
    start(&block).tap do |t|
      t.save!
    end
  end
end

Instance Method Details

#credit_items_presence ⇒ Object 



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# File 'app/models/deb/transaction.rb', line 43

def credit_items_presence
  errors.add(:base, "no credit items") if credit_items.blank?
end

#debit_items_presence ⇒ Object 



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# File 'app/models/deb/transaction.rb', line 39

def debit_items_presence
  errors.add(:base, "no debit items") if debit_items.blank?
end

#proper_amounts ⇒ Object 



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# File 'app/models/deb/transaction.rb', line 47

def proper_amounts
  errors.add(:base, "wrong credit total is not equal debit total") unless credit_items.collect(&:amount).reduce(:+) == debit_items.collect(&:amount).reduce(:+)
end

#rollback! ⇒ Object 



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# File 'app/models/deb/transaction.rb', line 21

def rollback!
  tran = self
  self.class.start! do
    tran.debit_items.each { |di| credit(di., di.amount) }
    tran.credit_items.each { |ci| debit(ci., ci.amount) }
    reference(tran)
    description("Rollback of #{tran.description}")
  end
end