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Contents
# encoding: utf-8
module Mongoid #:nodoc:
module Persistence #:nodoc:
# Remove is a persistence command responsible for deleting a document from
# the database.
#
# The underlying query resembles the following MongoDB query:
#
# collection.remove(
# { "_id" : 1 },
# false
# );
class RemoveEmbedded < Command
# Remove the document from the database. If the parent is a new record,
# it will get removed in Ruby only. If the parent is not a new record
# then either an $unset or $set will occur, depending if it's an
# embeds_one or embeds_many.
#
# Example:
#
# <tt>RemoveEmbedded.persist</tt>
#
# Returns:
#
# +true+ or +false+, depending on if the removal passed.
def persist
parent = document._parent
parent.remove_child(document)
unless parent.new_record?
update = { document._remover => removal_selector }
collection.update(parent._selector, update, options.merge(:multi => false))
end; true
end
protected
# Get the value to pass to the removal modifier.
def setter
document._index ? document.id : true
end
def removal_selector
document._index ? { document._pull => { "_id" => document.id } } : { document._path => setter }
end
end
end
end
Version data entries
9 entries across 9 versions & 2 rubygems