module Sequel::KeysetPagination
Public Instance Methods
seek(before: nil, after: nil)
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# File lib/sequel/extensions/keyset_pagination.rb, line 38 def seek(before: nil, after: nil) raise ArgumentError, "`before` or `after` is required" unless before || after if opts[:order].nil? raise StandardError, "cannot call #seek on a dataset with no order" end cursor_size = opts[:order].count if before before = [before] unless before.is_a? Array raise StandardError, "The `before` cursor has the wrong number of values. Expected #{cursor_size}, received #{before.count}." unless before.count == cursor_size end if after after = [after] unless after.is_a? Array raise StandardError, "The `after` cursor has the wrong number of values. Expected #{cursor_size}, received #{after.count}." unless after.count == cursor_size end columns = opts[:order].map { |o| Utils.qualify_order(o) } conditions = [] conditions << Utils.cursor_conditions(columns, after) if after conditions << Utils.cursor_conditions(columns, before, reverse: true) if before where(Sequel.&(*conditions)) end