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document.rb
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document.rb
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module MongoMapper
module Document
extend DescendantAppends
def self.included(model)
model.class_eval do
include InstanceMethods
extend ClassMethods
extend Finders
extend Plugins
plugin Plugins::Associations
plugin Plugins::Clone
plugin Plugins::Descendants
plugin Plugins::Equality
plugin Plugins::Inspect
plugin Plugins::Keys
plugin Plugins::Dirty # for now dirty needs to be after keys
plugin Plugins::Logger
plugin Plugins::Pagination
plugin Plugins::Rails
plugin Plugins::Serialization
plugin Plugins::Validations
plugin Plugins::Callbacks # for now callbacks needs to be after validations
extend Plugins::Validations::DocumentMacros
end
super
end
module ClassMethods
def inherited(subclass)
subclass.set_collection_name(collection_name)
super
end
def ensure_index(name_or_array, options={})
keys_to_index = if name_or_array.is_a?(Array)
name_or_array.map { |pair| [pair[0], pair[1]] }
else
name_or_array
end
MongoMapper.ensure_index(self, keys_to_index, options)
end
def find(*args)
find_all_first_last_error(args)
options = args.extract_options!
return nil if args.size == 0
if args.first.is_a?(Array) || args.size > 1
find_some(args, options)
else
find_one(options.merge({:_id => args[0]}))
end
end
def find!(*args)
find_all_first_last_error(args)
options = args.extract_options!
raise DocumentNotFound, "Couldn't find without an ID" if args.size == 0
if args.first.is_a?(Array) || args.size > 1
find_some!(args, options)
else
find_one(options.merge({:_id => args[0]})) || raise(DocumentNotFound, "Document match #{options.inspect} does not exist in #{collection.name} collection")
end
end
def first(options={})
find_one(options)
end
def last(options={})
raise ':order option must be provided when using last' if options[:order].blank?
find_one(options.merge(:order => invert_order_clause(options[:order])))
end
def all(options={})
find_many(options)
end
def find_by_id(id)
find(id)
end
def count(options={})
collection.find(to_criteria(options)).count
end
def find_each(options={})
criteria, options = to_finder_options(options)
collection.find(criteria, options).each do |doc|
yield load(doc)
end
end
def exists?(options={})
!count(options).zero?
end
def create(*docs)
initialize_each(*docs) { |doc| doc.save }
end
def create!(*docs)
initialize_each(*docs) { |doc| doc.save! }
end
def update(*args)
if args.length == 1
update_multiple(args[0])
else
id, attributes = args
update_single(id, attributes)
end
end
def delete(*ids)
collection.remove(to_criteria(:_id => ids.flatten))
end
def delete_all(options={})
collection.remove(to_criteria(options))
end
def destroy(*ids)
find_some!(ids.flatten).each(&:destroy)
end
def destroy_all(options={})
all(options).each(&:destroy)
end
def increment(*args)
modifier_update('$inc', args)
end
def decrement(*args)
criteria, keys = criteria_and_keys_from_args(args)
values, to_decrement = keys.values, {}
keys.keys.each_with_index { |k, i| to_decrement[k] = -values[i].abs }
collection.update(criteria, {'$inc' => to_decrement}, :multi => true)
end
def set(*args)
modifier_update('$set', args)
end
def push(*args)
modifier_update('$push', args)
end
def push_all(*args)
modifier_update('$pushAll', args)
end
def push_uniq(*args)
criteria, keys = criteria_and_keys_from_args(args)
keys.each { |key, value | criteria[key] = {'$ne' => value} }
collection.update(criteria, {'$push' => keys}, :multi => true)
end
def pull(*args)
modifier_update('$pull', args)
end
def pull_all(*args)
modifier_update('$pullAll', args)
end
def pop(*args)
modifier_update('$pop', args)
end
def embeddable?
false
end
def connection(mongo_connection=nil)
if mongo_connection.nil?
@connection ||= MongoMapper.connection
else
@connection = mongo_connection
end
@connection
end
def set_database_name(name)
@database_name = name
end
def database_name
@database_name
end
def database
if database_name.nil?
MongoMapper.database
else
connection.db(database_name)
end
end
def set_collection_name(name)
@collection_name = name
end
def collection_name
@collection_name ||= self.to_s.tableize.gsub(/\//, '.')
end
def collection
database.collection(collection_name)
end
def timestamps!
key :created_at, Time
key :updated_at, Time
class_eval { before_save :update_timestamps }
end
def userstamps!
key :creator_id, ObjectId
key :updater_id, ObjectId
belongs_to :creator, :class_name => 'User'
belongs_to :updater, :class_name => 'User'
end
def single_collection_inherited?
keys.key?(:_type) && single_collection_inherited_superclass?
end
def single_collection_inherited_superclass?
superclass.respond_to?(:keys) && superclass.keys.key?(:_type)
end
private
def initialize_each(*docs)
instances = []
docs = [{}] if docs.blank?
docs.flatten.each do |attrs|
doc = new(attrs)
yield(doc)
instances << doc
end
instances.size == 1 ? instances[0] : instances
end
def modifier_update(modifier, args)
criteria, keys = criteria_and_keys_from_args(args)
modifiers = {modifier => keys}
collection.update(criteria, modifiers, :multi => true)
end
def criteria_and_keys_from_args(args)
keys = args.pop
criteria = args[0].is_a?(Hash) ? args[0] : {:id => args}
[to_criteria(criteria), keys]
end
def find_all_first_last_error(args)
if args[0] == :first || args[0] == :last || args[0] == :all
raise ArgumentError, "#{self}.find(:#{args}) is no longer supported, use #{self}.#{args} instead."
end
end
def find_some(ids, options={})
ids = ids.flatten.compact.uniq
find_many(options.merge(:_id => ids)).compact
end
def find_some!(ids, options={})
ids = ids.flatten.compact.uniq
documents = find_some(ids, options)
if ids.size == documents.size
documents
else
raise DocumentNotFound, "Couldn't find all of the ids (#{ids.to_sentence}). Found #{documents.size}, but was expecting #{ids.size}"
end
end
# All query methods that load documents pass through find_one or find_many
def find_one(options={})
criteria, options = to_finder_options(options)
if doc = collection.find_one(criteria, options)
load(doc)
end
end
# All query methods that load documents pass through find_one or find_many
def find_many(options)
criteria, options = to_finder_options(options)
collection.find(criteria, options).to_a.map do |doc|
load(doc)
end
end
def invert_order_clause(order)
order.split(',').map do |order_segment|
if order_segment =~ /\sasc/i
order_segment.sub /\sasc/i, ' desc'
elsif order_segment =~ /\sdesc/i
order_segment.sub /\sdesc/i, ' asc'
else
"#{order_segment.strip} desc"
end
end.join(',')
end
def update_single(id, attrs)
if id.blank? || attrs.blank? || !attrs.is_a?(Hash)
raise ArgumentError, "Updating a single document requires an id and a hash of attributes"
end
doc = find(id)
doc.update_attributes(attrs)
doc
end
def update_multiple(docs)
unless docs.is_a?(Hash)
raise ArgumentError, "Updating multiple documents takes 1 argument and it must be hash"
end
instances = []
docs.each_pair { |id, attrs| instances << update(id, attrs) }
instances
end
def to_criteria(options={})
FinderOptions.new(self, options).criteria
end
def to_finder_options(options={})
FinderOptions.new(self, options).to_a
end
end
module InstanceMethods
def collection
self.class.collection
end
def database
self.class.database
end
def save(options={})
options.assert_valid_keys(:validate, :safe)
options.reverse_merge!(:validate => true)
!options[:validate] || valid? ? create_or_update(options) : false
end
def save!(options={})
options.assert_valid_keys(:safe)
save(options) || raise(DocumentNotValid.new(self))
end
def update_attributes(attrs={})
self.attributes = attrs
save
end
def update_attributes!(attrs={})
self.attributes = attrs
save!
end
def destroy
delete
end
def delete
self.class.delete(id) unless new?
end
def reload
if attrs = collection.find_one({:_id => _id})
self.class.associations.each { |name, assoc| send(name).reset if respond_to?(name) }
self.attributes = attrs
self
else
raise DocumentNotFound, "Document match #{_id.inspect} does not exist in #{collection.name} collection"
end
end
private
def create_or_update(options={})
result = new? ? create(options) : update(options)
result != false
end
def create(options={})
save_to_collection(options)
end
def update(options={})
save_to_collection(options)
end
def save_to_collection(options={})
safe = options.delete(:safe) || false
@new = false
collection.save(to_mongo, :safe => safe)
end
def update_timestamps
now = Time.now.utc
self[:created_at] = now if new? && !created_at?
self[:updated_at] = now
end
end
end # Document
end # MongoMapper