Migration

migration.rb

def migrate
  timestamp = Time.now.to_i.to_s
  echt_ink = Invoice.where(:invoice_number => ['B12-001765','B12-001849','B12-001850','B12-001851','B12-002119','B12-002120','B12-002121','B12-002684','B12-003439','B12-003449','B12-003450','B12-003482','B12-003520','B12-003574','B12-003708','B12-004053','B12-004055','B13-001241','B13-001329','B13-001330','B13-001343','B13-001345','B13-001385','B12-004155'])
  puts echt_ink.count #24
  all_ink = Invoice.where(:state => 'ink')
  puts all_ink.count #70
  falsch_ink = all_ink - echt_ink
  puts falsch_ink.count #46
  # Zusätzliche Tests
  puts falsch_ink.map(&:state).uniq #["ink"]
  puts falsch_ink.select{|r| r.invoice_number == echt_ink.first.invoice_number} unless falsch_ink.length.zero? || echt_ink.length.zero? #[]
  falsch_ink.each do |r|
    puts r.invoice_number
    ActiveRecord::Base.transaction do
      r.tap{|r1| r1.state = 'm2'; r1.updated_at = Date.today}.save
      InvoiceStateTransition.create!(:invoice_id => r.id, :event => "second_rem", :from => 'm1', :to => 'm2', :context => timestamp)
      InvoiceStateTransition.where(:invoice_id => r.id, :event => 'inkasso').map(&:destroy) # destroy! erst auf Rails4
    end
  end
end