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Contents
# encoding: utf-8
module Mongoid #:nodoc:
module Persistence #:nodoc:
module Operations #:nodoc:
# Update is a persistence command responsible for taking a document that
# has already been saved to the database and saving it, depending on
# whether or not the document has been modified.
#
# Before persisting the command will check via dirty attributes if the
# document has changed, if not, it will simply return true. If it has it
# will go through the validation steps, run callbacks, and set the changed
# fields atomically on the document. The underlying query resembles the
# following MongoDB query:
#
# collection.update(
# { "_id" : 1,
# { "$set" : { "field" : "value" },
# false,
# false
# );
#
# For embedded documents it will use the positional locator:
#
# collection.update(
# { "_id" : 1, "addresses._id" : 2 },
# { "$set" : { "addresses.$.field" : "value" },
# false,
# false
# );
#
class Update
include Modification, Operations
# Persist the document that is to be updated to the database. This will
# only write changed fields via MongoDB's $set modifier operation.
#
# @example Update the document.
# Update.persist
#
# @return [ true, false ] If the save passed.
def persist
prepare do
unless updates.empty?
collection.update(selector, updates, options)
collection.update(selector, conflicts, options) if conflicts
end
end
end
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems