diff options
Diffstat (limited to 'activerecord/lib/active_record/core.rb')
| -rw-r--r-- | activerecord/lib/active_record/core.rb | 227 |
1 files changed, 134 insertions, 93 deletions
diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb index e87fba550b..aad21b8e37 100644 --- a/activerecord/lib/active_record/core.rb +++ b/activerecord/lib/active_record/core.rb @@ -1,87 +1,90 @@ -require 'active_support/concern' +require 'active_support/core_ext/hash/indifferent_access' +require 'active_support/core_ext/object/duplicable' require 'thread' module ActiveRecord + ActiveSupport.on_load(:active_record_config) do + ## + # :singleton-method: + # + # Accepts a logger conforming to the interface of Log4r which is then + # passed on to any new database connections made and which can be + # retrieved on both a class and instance level by calling +logger+. + mattr_accessor :logger, instance_accessor: false + + ## + # :singleton-method: + # Contains the database configuration - as is typically stored in config/database.yml - + # as a Hash. + # + # For example, the following database.yml... + # + # development: + # adapter: sqlite3 + # database: db/development.sqlite3 + # + # production: + # adapter: sqlite3 + # database: db/production.sqlite3 + # + # ...would result in ActiveRecord::Base.configurations to look like this: + # + # { + # 'development' => { + # 'adapter' => 'sqlite3', + # 'database' => 'db/development.sqlite3' + # }, + # 'production' => { + # 'adapter' => 'sqlite3', + # 'database' => 'db/production.sqlite3' + # } + # } + mattr_accessor :configurations, instance_accessor: false + self.configurations = {} + + ## + # :singleton-method: + # Determines whether to use Time.utc (using :utc) or Time.local (using :local) when pulling + # dates and times from the database. This is set to :utc by default. + mattr_accessor :default_timezone, instance_accessor: false + self.default_timezone = :utc + + ## + # :singleton-method: + # Specifies the format to use when dumping the database schema with Rails' + # Rakefile. If :sql, the schema is dumped as (potentially database- + # specific) SQL statements. If :ruby, the schema is dumped as an + # ActiveRecord::Schema file which can be loaded into any database that + # supports migrations. Use :ruby if you want to have different database + # adapters for, e.g., your development and test environments. + mattr_accessor :schema_format, instance_accessor: false + self.schema_format = :ruby + + ## + # :singleton-method: + # Specify whether or not to use timestamps for migration versions + mattr_accessor :timestamped_migrations, instance_accessor: false + self.timestamped_migrations = true + + mattr_accessor :connection_handler, instance_accessor: false + self.connection_handler = ConnectionAdapters::ConnectionHandler.new + + mattr_accessor :dependent_restrict_raises, instance_accessor: false + self.dependent_restrict_raises = true + end + module Core extend ActiveSupport::Concern included do ## # :singleton-method: - # Accepts a logger conforming to the interface of Log4r or the default Ruby 1.8+ Logger class, - # which is then passed on to any new database connections made and which can be retrieved on both - # a class and instance level by calling +logger+. - config_attribute :logger, :global => true - - ## - # :singleton-method: - # Contains the database configuration - as is typically stored in config/database.yml - - # as a Hash. - # - # For example, the following database.yml... - # - # development: - # adapter: sqlite3 - # database: db/development.sqlite3 - # - # production: - # adapter: sqlite3 - # database: db/production.sqlite3 - # - # ...would result in ActiveRecord::Base.configurations to look like this: - # - # { - # 'development' => { - # 'adapter' => 'sqlite3', - # 'database' => 'db/development.sqlite3' - # }, - # 'production' => { - # 'adapter' => 'sqlite3', - # 'database' => 'db/production.sqlite3' - # } - # } - config_attribute :configurations, :global => true - self.configurations = {} - - ## - # :singleton-method: - # Determines whether to use Time.utc (using :utc) or Time.local (using :local) when pulling - # dates and times from the database. This is set to :utc by default. - config_attribute :default_timezone, :global => true - self.default_timezone = :utc - - ## - # :singleton-method: - # Specifies the format to use when dumping the database schema with Rails' - # Rakefile. If :sql, the schema is dumped as (potentially database- - # specific) SQL statements. If :ruby, the schema is dumped as an - # ActiveRecord::Schema file which can be loaded into any database that - # supports migrations. Use :ruby if you want to have different database - # adapters for, e.g., your development and test environments. - config_attribute :schema_format, :global => true - self.schema_format = :ruby - - ## - # :singleton-method: - # Specify whether or not to use timestamps for migration versions - config_attribute :timestamped_migrations, :global => true - self.timestamped_migrations = true - - ## - # :singleton-method: # The connection handler config_attribute :connection_handler - self.connection_handler = ConnectionAdapters::ConnectionHandler.new - ## - # :singleton-method: - # Specifies wether or not has_many or has_one association option - # :dependent => :restrict raises an exception. If set to true, the - # ActiveRecord::DeleteRestrictionError exception will be raised - # along with a DEPRECATION WARNING. If set to false, an error would - # be added to the model instead. - config_attribute :dependent_restrict_raises, :global => true - self.dependent_restrict_raises = true + %w(logger configurations default_timezone schema_format timestamped_migrations).each do |name| + config_attribute name, global: true + end end module ClassMethods @@ -125,23 +128,29 @@ module ActiveRecord object.is_a?(self) end + # Returns an instance of <tt>Arel::Table</tt> loaded with the current table name. + # + # class Post < ActiveRecord::Base + # scope :published_and_commented, published.and(self.arel_table[:comments_count].gt(0)) + # end def arel_table @arel_table ||= Arel::Table.new(table_name, arel_engine) end + # Returns the Arel engine. def arel_engine - @arel_engine ||= connection_handler.connection_pools[name] ? self : active_record_super.arel_engine + @arel_engine ||= connection_handler.retrieve_connection_pool(self) ? self : active_record_super.arel_engine end private def relation #:nodoc: - @relation ||= Relation.new(self, arel_table) + relation = Relation.new(self, arel_table) if finder_needs_type_condition? - @relation.where(type_condition).create_with(inheritance_column.to_sym => sti_name) + relation.where(type_condition).create_with(inheritance_column.to_sym => sti_name) else - @relation + relation end end end @@ -164,7 +173,11 @@ module ActiveRecord # # Instantiates a single new object bypassing mass-assignment security # User.new({ :first_name => 'Jamie', :is_admin => true }, :without_protection => true) def initialize(attributes = nil, options = {}) - @attributes = self.class.initialize_attributes(self.class.column_defaults.dup) + defaults = self.class.column_defaults.dup + defaults.each { |k, v| defaults[k] = v.dup if v.duplicable? } + + @attributes = self.class.initialize_attributes(defaults) + @columns_hash = self.class.column_types.dup init_internals @@ -175,7 +188,7 @@ module ActiveRecord assign_attributes(attributes, options) if attributes yield self if block_given? - run_callbacks :initialize + run_callbacks :initialize unless _initialize_callbacks.empty? end # Initialize an empty model object from +coder+. +coder+ must contain @@ -190,6 +203,7 @@ module ActiveRecord # post.title # => 'hello world' def init_with(coder) @attributes = self.class.initialize_attributes(coder['attributes']) + @columns_hash = self.class.column_types.merge(coder['column_types'] || {}) init_internals @@ -201,15 +215,36 @@ module ActiveRecord self end + ## + # :method: clone + # Identical to Ruby's clone method. This is a "shallow" copy. Be warned that your attributes are not copied. + # That means that modifying attributes of the clone will modify the original, since they will both point to the + # same attributes hash. If you need a copy of your attributes hash, please use the #dup method. + # + # user = User.first + # new_user = user.clone + # user.name # => "Bob" + # new_user.name = "Joe" + # user.name # => "Joe" + # + # user.object_id == new_user.object_id # => false + # user.name.object_id == new_user.name.object_id # => true + # + # user.name.object_id == user.dup.name.object_id # => false + + ## + # :method: dup # Duped objects have no id assigned and are treated as new records. Note # that this is a "shallow" copy as it copies the object's attributes # only, not its associations. The extent of a "deep" copy is application # specific and is therefore left to the application to implement according # to its need. # The dup method does not preserve the timestamps (created|updated)_(at|on). - def initialize_dup(other) + + ## + def initialize_dup(other) # :nodoc: cloned_attributes = other.clone_attributes(:read_attribute_before_type_cast) - self.class.initialize_attributes(cloned_attributes) + self.class.initialize_attributes(cloned_attributes, :serialized => false) cloned_attributes.delete(self.class.primary_key) @@ -220,7 +255,7 @@ module ActiveRecord @changed_attributes = {} self.class.column_defaults.each do |attr, orig_value| - @changed_attributes[attr] = orig_value if field_changed?(attr, orig_value, @attributes[attr]) + @changed_attributes[attr] = orig_value if _field_changed?(attr, orig_value, @attributes[attr]) end @aggregation_cache = {} @@ -245,7 +280,7 @@ module ActiveRecord # end # coder = {} # Post.new.encode_with(coder) - # coder # => { 'id' => nil, ... } + # coder # => {"attributes" => {"id" => nil, ... }} def encode_with(coder) coder['attributes'] = attributes end @@ -324,6 +359,11 @@ module ActiveRecord "#<#{self.class} #{inspection}>" end + # Returns a hash of the given methods with their names as keys and returned values as values. + def slice(*methods) + Hash[methods.map { |method| [method, public_send(method)] }].with_indifferent_access + end + private # Under Ruby 1.9, Array#flatten will call #to_ary (recursively) on each of the elements @@ -333,7 +373,7 @@ module ActiveRecord # # So we can avoid the method_missing hit by explicitly defining #to_ary as nil here. # - # See also http://tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary/ + # See also http://tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary.html def to_ary # :nodoc: nil end @@ -343,16 +383,17 @@ module ActiveRecord @attributes[pk] = nil unless @attributes.key?(pk) - @relation = nil - @aggregation_cache = {} - @association_cache = {} - @attributes_cache = {} - @previously_changed = {} - @changed_attributes = {} - @readonly = false - @destroyed = false - @marked_for_destruction = false - @new_record = true + @aggregation_cache = {} + @association_cache = {} + @attributes_cache = {} + @previously_changed = {} + @changed_attributes = {} + @readonly = false + @destroyed = false + @marked_for_destruction = false + @new_record = true + @mass_assignment_options = nil + @_start_transaction_state = {} end end end |