diff options
Diffstat (limited to 'activerecord/lib/active_record/core.rb')
| -rw-r--r-- | activerecord/lib/active_record/core.rb | 171 |
1 files changed, 89 insertions, 82 deletions
diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb index 0028dc0edb..82cf7563a2 100644 --- a/activerecord/lib/active_record/core.rb +++ b/activerecord/lib/active_record/core.rb @@ -1,12 +1,15 @@ -require "thread" +# frozen_string_literal: true + require "active_support/core_ext/hash/indifferent_access" -require "active_support/core_ext/object/duplicable" require "active_support/core_ext/string/filters" +require "concurrent/map" module ActiveRecord module Core extend ActiveSupport::Concern + FILTERED = "[FILTERED]" # :nodoc: + included do ## # :singleton-method: @@ -17,8 +20,15 @@ module ActiveRecord mattr_accessor :logger, instance_writer: false ## + # :singleton-method: + # + # Specifies if the methods calling database queries should be logged below + # their relevant queries. Defaults to false. + mattr_accessor :verbose_query_logs, instance_writer: false, default: false + + ## # Contains the database configuration - as is typically stored in config/database.yml - - # as a Hash. + # as an ActiveRecord::DatabaseConfigurations object. # # For example, the following database.yml... # @@ -32,22 +42,18 @@ module ActiveRecord # # ...would result in ActiveRecord::Base.configurations to look like this: # - # { - # 'development' => { - # 'adapter' => 'sqlite3', - # 'database' => 'db/development.sqlite3' - # }, - # 'production' => { - # 'adapter' => 'sqlite3', - # 'database' => 'db/production.sqlite3' - # } - # } + # #<ActiveRecord::DatabaseConfigurations:0x00007fd1acbdf800 @configurations=[ + # #<ActiveRecord::DatabaseConfigurations::HashConfig:0x00007fd1acbded10 @env_name="development", + # @spec_name="primary", @config={"adapter"=>"sqlite3", "database"=>"db/development.sqlite3"}>, + # #<ActiveRecord::DatabaseConfigurations::HashConfig:0x00007fd1acbdea90 @env_name="production", + # @spec_name="primary", @config={"adapter"=>"mysql2", "database"=>"db/production.sqlite3"}> + # ]> def self.configurations=(config) - @@configurations = ActiveRecord::ConnectionHandling::MergeAndResolveDefaultUrlConfig.new(config).resolve + @@configurations = ActiveRecord::DatabaseConfigurations.new(config) end self.configurations = {} - # Returns fully resolved configurations hash + # Returns fully resolved ActiveRecord::DatabaseConfigurations object def self.configurations @@configurations end @@ -56,8 +62,7 @@ module ActiveRecord # :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_writer: false - self.default_timezone = :utc + mattr_accessor :default_timezone, instance_writer: false, default: :utc ## # :singleton-method: @@ -67,51 +72,35 @@ module ActiveRecord # 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_writer: false - self.schema_format = :ruby + mattr_accessor :schema_format, instance_writer: false, default: :ruby ## # :singleton-method: # Specifies if an error should be raised if the query has an order being # ignored when doing batch queries. Useful in applications where the # scope being ignored is error-worthy, rather than a warning. - mattr_accessor :error_on_ignored_order, instance_writer: false - self.error_on_ignored_order = false - - def self.error_on_ignored_order_or_limit - ActiveSupport::Deprecation.warn(<<-MSG.squish) - The flag error_on_ignored_order_or_limit is deprecated. Limits are - now supported. Please use error_on_ignored_order instead. - MSG - error_on_ignored_order - end + mattr_accessor :error_on_ignored_order, instance_writer: false, default: false - def error_on_ignored_order_or_limit - self.class.error_on_ignored_order_or_limit - end - - def self.error_on_ignored_order_or_limit=(value) - ActiveSupport::Deprecation.warn(<<-MSG.squish) - The flag error_on_ignored_order_or_limit is deprecated. Limits are - now supported. Please use error_on_ignored_order= instead. - MSG - self.error_on_ignored_order = value - end + # :singleton-method: + # Specify the behavior for unsafe raw query methods. Values are as follows + # deprecated - Warnings are logged when unsafe raw SQL is passed to + # query methods. + # disabled - Unsafe raw SQL passed to query methods results in + # UnknownAttributeReference exception. + mattr_accessor :allow_unsafe_raw_sql, instance_writer: false, default: :deprecated ## # :singleton-method: # Specify whether or not to use timestamps for migration versions - mattr_accessor :timestamped_migrations, instance_writer: false - self.timestamped_migrations = true + mattr_accessor :timestamped_migrations, instance_writer: false, default: true ## # :singleton-method: # Specify whether schema dump should happen at the end of the - # db:migrate rake task. This is true by default, which is useful for the + # db:migrate rails command. This is true by default, which is useful for the # development environment. This should ideally be false in the production # environment where dumping schema is rarely needed. - mattr_accessor :dump_schema_after_migration, instance_writer: false - self.dump_schema_after_migration = true + mattr_accessor :dump_schema_after_migration, instance_writer: false, default: true ## # :singleton-method: @@ -120,8 +109,7 @@ module ActiveRecord # schema_search_path are dumped. Use :all to dump all schemas regardless # of schema_search_path, or a string of comma separated schemas for a # custom list. - mattr_accessor :dump_schemas, instance_writer: false - self.dump_schemas = :schema_search_path + mattr_accessor :dump_schemas, instance_writer: false, default: :schema_search_path ## # :singleton-method: @@ -130,7 +118,6 @@ module ActiveRecord # be used to identify queries which load thousands of records and # potentially cause memory bloat. mattr_accessor :warn_on_records_fetched_greater_than, instance_writer: false - self.warn_on_records_fetched_greater_than = nil mattr_accessor :maintain_test_schema, instance_accessor: false @@ -138,6 +125,10 @@ module ActiveRecord class_attribute :default_connection_handler, instance_writer: false + ## + # Specifies columns which don't want to be exposed while calling #inspect + class_attribute :filter_attributes, instance_writer: false, default: [] + def self.connection_handler ActiveRecord::RuntimeRegistry.connection_handler || default_connection_handler end @@ -149,14 +140,9 @@ module ActiveRecord self.default_connection_handler = ConnectionAdapters::ConnectionHandler.new end - module ClassMethods - def allocate - define_attribute_methods - super - end - + module ClassMethods # :nodoc: def initialize_find_by_cache # :nodoc: - @find_by_statement_cache = { true => {}.extend(Mutex_m), false => {}.extend(Mutex_m) } + @find_by_statement_cache = { true => Concurrent::Map.new, false => Concurrent::Map.new } end def inherited(child_class) # :nodoc: @@ -175,8 +161,7 @@ module ActiveRecord id = ids.first - return super if id.kind_of?(Array) || - id.is_a?(ActiveRecord::Base) + return super if StatementCache.unsupported_value?(id) key = primary_key @@ -184,7 +169,7 @@ module ActiveRecord where(key => params.bind).limit(1) } - record = statement.execute([id], self, connection).first + record = statement.execute([id], connection).first unless record raise RecordNotFound.new("Couldn't find #{name} with '#{primary_key}'=#{id}", name, primary_key, id) @@ -201,7 +186,7 @@ module ActiveRecord hash = args.first return super if !(Hash === hash) || hash.values.any? { |v| - v.nil? || Array === v || Hash === v || Relation === v || Base === v + StatementCache.unsupported_value?(v) } # We can't cache Post.find_by(author: david) ...yet @@ -216,7 +201,7 @@ module ActiveRecord where(wheres).limit(1) } begin - statement.execute(hash.values, self, connection).first + statement.execute(hash.values, connection).first rescue TypeError raise ActiveRecord::StatementInvalid rescue ::RangeError @@ -258,7 +243,7 @@ module ActiveRecord end end - # Overwrite the default class equality method to provide support for association proxies. + # Overwrite the default class equality method to provide support for decorated models. def ===(object) object.is_a?(self) end @@ -272,16 +257,6 @@ module ActiveRecord @arel_table ||= Arel::Table.new(table_name, type_caster: type_caster) end - # Returns the Arel engine. - def arel_engine # :nodoc: - @arel_engine ||= - if Base == self || connection_handler.retrieve_connection_pool(connection_specification_name) - self - else - superclass.arel_engine - end - end - def arel_attribute(name, table = arel_table) # :nodoc: name = attribute_alias(name) if attribute_alias?(name) table[name] @@ -299,16 +274,15 @@ module ActiveRecord def cached_find_by_statement(key, &block) cache = @find_by_statement_cache[connection.prepared_statements] - cache[key] || cache.synchronize { - cache[key] ||= StatementCache.create(connection, &block) - } + cache.compute_if_absent(key) { StatementCache.create(connection, &block) } end def relation - relation = Relation.create(self, arel_table, predicate_builder) + relation = Relation.create(self) if finder_needs_type_condition? && !ignore_default_scope? - relation.where(type_condition).create_with(inheritance_column.to_s => sti_name) + relation.where!(type_condition) + relation.create_with!(inheritance_column.to_s => sti_name) else relation end @@ -373,6 +347,28 @@ module ActiveRecord end ## + # Initializer used for instantiating objects that have been read from the + # database. +attributes+ should be an attributes object, and unlike the + # `initialize` method, no assignment calls are made per attribute. + # + # :nodoc: + def init_from_db(attributes) + init_internals + + @new_record = false + @attributes = attributes + + self.class.define_attribute_methods + + yield self if block_given? + + _run_find_callbacks + _run_initialize_callbacks + + 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 @@ -405,8 +401,10 @@ module ActiveRecord _run_initialize_callbacks - @new_record = true - @destroyed = false + @new_record = true + @destroyed = false + @_start_transaction_state = {} + @transaction_state = nil super end @@ -495,12 +493,17 @@ module ActiveRecord # Returns the contents of the record as a nicely formatted string. def inspect + filter_attributes = self.filter_attributes.map(&:to_s).to_set # We check defined?(@attributes) not to issue warnings if the object is # allocated but not initialized. inspection = if defined?(@attributes) && @attributes self.class.attribute_names.collect do |name| if has_attribute?(name) - "#{name}: #{attribute_for_inspect(name)}" + if filter_attributes.include?(name) && !read_attribute(name).nil? + "#{name}: #{ActiveRecord::Core::FILTERED}" + else + "#{name}: #{attribute_for_inspect(name)}" + end end end.compact.join(", ") else @@ -514,6 +517,7 @@ module ActiveRecord # when pp is required. def pretty_print(pp) return super if custom_inspect_method_defined? + filter_attributes = self.filter_attributes.map(&:to_s).to_set pp.object_address_group(self) do if defined?(@attributes) && @attributes column_names = self.class.column_names.select { |name| has_attribute?(name) || new_record? } @@ -524,7 +528,11 @@ module ActiveRecord pp.text column_name pp.text ":" pp.breakable - pp.pp column_value + if filter_attributes.include?(column_name) && !column_value.nil? + pp.text ActiveRecord::Core::FILTERED + else + pp.pp column_value + end end end else @@ -548,7 +556,7 @@ 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.html + # See also https://tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary.html def to_ary nil end @@ -559,7 +567,6 @@ module ActiveRecord @marked_for_destruction = false @destroyed_by_association = nil @new_record = true - @txn = nil @_start_transaction_state = {} @transaction_state = nil end |