mixpanel_charges.rb

def payment_received(user.id, amount)
  mixpanel.people.track_charge(user.id, amount, {}, nil, '$ignore_time' => true)
  mixpanel.track(user.id, 'Payment', 'Action' => 'received', 'Amount' => amount)
end

def payment_refunded(user, amount)
  mixpanel.people.track_charge(user.id, -amount, {}, nil, '$ignore_time' => true)
  mixpanel.track(user.id, 'Payment', 'Action' => 'refunded', 'Amount' => -amount)
end