gem install seek

params = { page: '4', sort_direction: 'desc', per_page: '1000' }

seek = Seek.new params,
       valid_sort_bys: %w{ first_name, last_name, age },
       max_per_page: 50,
       default_per_page: 10,
       default_sort_by: :age,
       default_sort_direction: :asc

seek.page           #=> 4
seek.per_page       #=> 50
seek.sort_by        #=> 'age'
seek.sort_direction #=> 'desc
seek.order          #=> 'age desc'

seek.to_hash    #=> Returns a Hash with all the parameters listed above.