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Contents
# frozen_string_literal: true
# encoding: utf-8
module Mongoid
module Persistable
# Defines behavior for $pop operations.
#
# @since 4.0.0
module Poppable
extend ActiveSupport::Concern
# Pop or shift items from arrays using the $pop operator.
#
# @example Pop items from an array.
# document.pop(aliases: 1)
#
# @example Shift items in the array.
# document.pop(aliases: -1)
#
# @example Multiple pops in one call.
# document.pop(names: 1, aliases: 1)
#
# @param [ Hash ] pops The field/value pop operations.
#
# @return [ Document ] The document.
#
# @since 4.0.0
def pop(pops)
prepare_atomic_operation do |ops|
process_atomic_operations(pops) do |field, value|
values = send(field)
value > 0 ? values.pop : values.shift
ops[atomic_attribute_name(field)] = value
end
{ "$pop" => ops }
end
end
end
end
end
Version data entries
27 entries across 27 versions & 2 rubygems