Sha256: 819766cd1b5a8eb0bf1bb4e35892cdbe85c6e130bd080241dd029b03746b8026
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Versions: 11
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Contents
module HalApi::Controller::Sorting
extend ActiveSupport::Concern
included do
class_eval do
class_attribute :allowed_sort_names
class_attribute :default_sort
end
end
module ClassMethods
def sort_params(args)
self.allowed_sort_names = args[:allowed].map(&:to_s).uniq
self.default_sort = args[:default]
if default_sort && !default_sort.is_a?(Array)
self.default_sort = Array[default_sort]
end
end
end
def sorts
@sorts ||= parse_sorts_param
end
def sorted(arel)
apply_sorts = !sorts.blank? ? sorts : default_sort
if apply_sorts.blank?
super
else
arel.order(*apply_sorts)
end
end
private
# support ?sorts=attribute,attribute:direction params
# e.g. ?sorts=published_at,updated_at:desc
# desc is default if a direction is not specified
def parse_sorts_param
sorts_array = []
allowed_sorts = self.class.allowed_sort_names
# parse sort param for name of the column and direction
# default is descending, because I say so, and we have a bias towards the new
(params[:sorts] || '').split(',').each do |str|
name, direction = str.split(':', 2).map { |s| s.to_s.strip }
name = name.underscore
direction = direction.blank? ? 'desc' : direction.downcase
unless allowed_sorts.include?(name)
hint = "Valid sorts are: #{allowed_sorts.join(' ')}"
raise HalApi::Errors::BadSortError.new("Invalid sort: #{name}", hint)
end
unless ['asc', 'desc'].include?(direction)
hint = "Valid directions are: asc desc"
raise HalApi::Errors::BadSortError.new("Invalid sort direction: #{direction}", hint)
end
sorts_array << { name => direction }
end
sorts_array
end
end
Version data entries
11 entries across 11 versions & 1 rubygems