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Contents
require 'active_support/core_ext/object/try'
module ActiveHouse
module Querying
module OrderBy
extend ActiveSupport::Concern
included do
private :build_order_by_query_part
end
def build_order_by_query_part
"ORDER BY #{values[:order_by].join(', ')}" unless values[:order_by].empty?
end
def initial_values
super.merge order_by: []
end
def order_by!(*clauses)
formatter_clauses = format_order_clauses(clauses)
values[:order_by] = (values[:order_by] + formatter_clauses).uniq
self
end
def order_by(*clauses)
dup.order_by!(*clauses)
end
def format_order_clauses(clauses)
raise ArgumentError, 'wrong number of arguments' if clauses.empty?
clauses.map do |clause|
if clause.is_a?(Hash)
format_order_hash(clause)
else
clause.to_s
end
end
end
def format_order_hash(clause)
if clause.keys.one?
direction = clause.values.first
raise ArgumentError, 'direction must be asc or desc' unless [:asc, :desc].include?(direction.try!(:to_sym))
"#{clause.keys.first} #{direction.to_s.upcase}"
else
clause.assert_valid_keys(:field, :direction, :collate)
[
clause.fetch(:field),
clause[:direction].try!(:to_s).try!(:upcase),
clause.key?(:collate) ? "COLLATE '#{clause[:collate]}'" : nil
].reject(&:nil?).join(' ')
end
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems