class Pagy::Keyset::ActiveRecord

def apply_select
  @set.select(*@keyset.keys)
end

def extract_keyset
  @set.order_values.each_with_object({}) do |node, keyset|
    keyset[node.value.name.to_sym] = node.direction
  end
end

def filter_newest = @set.where(filter_newest_query, **@latest)

def keyset_attributes_from(record) = record.slice(*@keyset.keys)

def select? = !@set.select_values.empty?

def typecast_latest(latest)
  @set.model.new(latest).slice(latest.keys)
      .to_hash.transform_keys(&:to_sym)
end