21 lines
619 B
Ruby
21 lines
619 B
Ruby
# frozen_string_literal: true
|
|
|
|
module IdInOrdered
|
|
extend ActiveSupport::Concern
|
|
|
|
included do
|
|
scope :id_in_ordered, -> (ids) do
|
|
raise ArgumentError, "ids must be an array of integers" unless ids.is_a?(Enumerable) && ids.all? { |id| id.is_a?(Integer) }
|
|
|
|
# No need to sort if no more than 1 and the sorting code doesn't work
|
|
# with an empty array
|
|
return id_in(ids) unless ids.count > 1
|
|
|
|
id_attribute = arel_table[:id]
|
|
id_in(ids)
|
|
.order(
|
|
Arel.sql("array_position(ARRAY[#{ids.join(',')}], #{id_attribute.relation.name}.#{id_attribute.name})"))
|
|
end
|
|
end
|
|
end
|