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sortable_table.rb 1.8KB

    require 'active_support/concern' module SortableTable extend ActiveSupport::Concern included do helper SortableTableHelper end protected def table_sort raise("You must call set_table_sort in any action using table_sort.") unless @table_sort_info.present? @table_sort_info[:order] end def set_table_sort(sort_options) valid_sorts = sort_options[:sorts] or raise ArgumentError.new("You must specify :sorts as an array of valid sort attributes.") default = sort_options[:default] || { valid_sorts.first.to_sym => :desc } if params[:sort].present? attribute, direction = params[:sort].downcase.split('.') unless valid_sorts.include?(attribute) attribute, direction = default.to_a.first end else attribute, direction = default.to_a.first end direction = direction.to_s == 'desc' ? 'desc' : 'asc' @table_sort_info = { order: { attribute.to_sym => direction.to_sym }, attribute: attribute, direction: direction } end module SortableTableHelper # :call-seq: # sortable_column(attribute, default_direction = 'desc', name: attribute.humanize) def sortable_column(attribute, default_direction = nil, options = nil) if options.nil? && (options = Hash.try_convert(default_direction)) default_direction = nil end default_direction ||= 'desc' options ||= {} name = options[:name] || attribute.humanize selected = @table_sort_info[:attribute].to_s == attribute if selected direction = @table_sort_info[:direction] new_direction = direction.to_s == 'desc' ? 'asc' : 'desc' classes = "selected #{direction}" else classes = '' new_direction = default_direction end link_to(name, url_for(sort: "#{attribute}.#{new_direction}"), class: classes) end end end