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Contents
# encoding: utf-8
module Mongoid #:nodoc:
# This module contains the behaviour of Mongoid's clone/dup of documents.
module Copyable
extend ActiveSupport::Concern
COPYABLES = [
:attributes,
:metadata,
:changed_attributes,
:previous_changes
]
protected
# Clone or dup the current +Document+. This will return all attributes with
# the exception of the document's id and versions, and will reset all the
# instance variables.
#
# This clone also includes embedded documents.
#
# @example Clone the document.
# document.clone
#
# @param [ Document ] other The document getting cloned.
#
# @return [ Document ] The new document.
def initialize_copy(other)
__copy__(other)
end
# Clone or dup the current +Document+. This will return all attributes with
# the exception of the document's id and versions, and will reset all the
# instance variables.
#
# This clone also includes embedded documents.
#
# @example Dup the document.
# document.dup
#
# @param [ Document ] other The document getting cloned.
#
# @return [ Document ] The new document.
def initialize_dup(other)
__copy__(other)
end
private
# Handle the copy of the object.
#
# @api private
#
# @example Copy the object.
# document.__copy__(other)
#
# @param [ Document ] other The other document.
#
# @return [ Document ] self.
#
# @since 3.0.0
def __copy__(other)
other.as_document
instance_variables.each { |name| remove_instance_variable(name) }
COPYABLES.each do |name|
value = other.send(name)
instance_variable_set(:"@#{name}", value ? value.dup : nil)
end
attributes.delete("_id")
if attributes.delete("versions")
attributes["version"] = 1
end
@new_record = true
identify
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems