问Acitverecord使用`through`指定`inverse_of`，但不能以其他方式指定

EN

class User
  has_many :event_series, inverse_of: :user
  has_many :events, through: :event_series, inverse_of: :user
end

class EventSeries
  belongs_to :user, inverse_of: :event_series
  has_many :events, inverse_of: :event_series
end

class Event
  belongs_to :event_series, inverse_of: :events
  has_one :user, through: :event_series, inverse_of: :events
end

class User
  has_one :showcase_event, class_name: 'Event', inverse_of: :user
end

ActiveRecord::StatementInvalid (PG::UndefinedColumn: ERROR:  column events.user_id does not exist

class PublicUserSerializer
  include FastJsonapi::ObjectSerializer
  ...
  has_one :showcase_event, record_type: :event, serializer: EventSerializer
  ...
end