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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
# Insert the new document in the database. If the document's parent is a
# new record, we will call save on the parent, otherwise we will $push
# the document onto the parent.
#
# 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(@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
14 entries across 14 versions & 6 rubygems