diff options
Diffstat (limited to 'activerecord/lib/active_record/base.rb')
| -rw-r--r-- | activerecord/lib/active_record/base.rb | 130 |
1 files changed, 76 insertions, 54 deletions
diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb index 99930e7697..eb4a16ecf5 100644 --- a/activerecord/lib/active_record/base.rb +++ b/activerecord/lib/active_record/base.rb @@ -428,10 +428,6 @@ module ActiveRecord #:nodoc: class_attribute :default_scopes, :instance_writer => false self.default_scopes = [] - # Boolean flag to prevent infinite recursion when evaluating default scopes - class_attribute :apply_default_scope, :instance_writer => false - self.apply_default_scope = true - # Returns a hash of all the attributes that have been specified for serialization as # keys and their class restriction as values. class_attribute :serialized_attributes @@ -659,8 +655,8 @@ module ActiveRecord #:nodoc: def set_table_name(value = nil, &block) @quoted_table_name = nil define_attr_method :table_name, value, &block + @arel_table = nil - @arel_table = Arel::Table.new(table_name, arel_engine) @relation = Relation.new(self, arel_table) end alias :table_name= :set_table_name @@ -713,6 +709,12 @@ module ActiveRecord #:nodoc: connection_pool.columns_hash[table_name] end + # Returns a hash where the keys are column names and the values are + # default values when instantiating the AR object for this table. + def column_defaults + connection_pool.column_defaults[table_name] + end + # Returns an array of column names as strings. def column_names @column_names ||= columns.map { |column| column.name } @@ -892,7 +894,7 @@ module ActiveRecord #:nodoc: end def arel_table - Arel::Table.new(table_name, arel_engine) + @arel_table ||= Arel::Table.new(table_name, arel_engine) end def arel_engine @@ -1056,7 +1058,7 @@ module ActiveRecord #:nodoc: if match.finder? options = arguments.extract_options! relation = options.any? ? scoped(options) : scoped - relation.send :find_by_attributes, match, attribute_names, *arguments + relation.send :find_by_attributes, match, attribute_names, *arguments, &block elsif match.instantiator? scoped.send :find_or_instantiator_by_attributes, match, attribute_names, *arguments, &block end @@ -1208,11 +1210,11 @@ MSG end def current_scope #:nodoc: - Thread.current[:"#{self}_current_scope"] + Thread.current["#{self}_current_scope"] end def current_scope=(scope) #:nodoc: - Thread.current[:"#{self}_current_scope"] = scope + Thread.current["#{self}_current_scope"] = scope end # Use this macro in your model to set a default scope for all operations on @@ -1265,11 +1267,11 @@ MSG self.default_scopes = default_scopes + [scope] end - # The apply_default_scope flag is used to prevent an infinite recursion situation where + # The @ignore_default_scope flag is used to prevent an infinite recursion situation where # a default scope references a scope which has a default scope which references a scope... def build_default_scope #:nodoc: - return unless apply_default_scope - self.apply_default_scope = false + return if defined?(@ignore_default_scope) && @ignore_default_scope + @ignore_default_scope = true if method(:default_scope).owner != Base.singleton_class default_scope @@ -1285,7 +1287,7 @@ MSG end end ensure - self.apply_default_scope = true + @ignore_default_scope = false end # Returns the class type of the record using the current module as a prefix. So descendants of @@ -1308,7 +1310,6 @@ MSG rescue NameError => e # We don't want to swallow NoMethodError < NameError errors raise e unless e.instance_of?(NameError) - rescue ArgumentError end end @@ -1532,6 +1533,7 @@ MSG @marked_for_destruction = false @previously_changed = {} @changed_attributes = {} + @relation = nil ensure_proper_type set_serialized_attributes @@ -1540,9 +1542,8 @@ MSG assign_attributes(attributes, options) if attributes - result = yield self if block_given? + yield self if block_given? run_callbacks :initialize - result end # Populate +coder+ with attributes about this record that should be @@ -1573,6 +1574,7 @@ MSG # post.title # => 'hello world' def init_with(coder) @attributes = coder['attributes'] + @relation = nil set_serialized_attributes @@ -1662,9 +1664,6 @@ MSG # If any attributes are protected by either +attr_protected+ or # +attr_accessible+ then only settable attributes will be assigned. # - # The +guard_protected_attributes+ argument is now deprecated, use - # the +assign_attributes+ method if you want to bypass mass-assignment security. - # # class User < ActiveRecord::Base # attr_protected :is_admin # end @@ -1673,20 +1672,10 @@ MSG # user.attributes = { :username => 'Phusion', :is_admin => true } # user.username # => "Phusion" # user.is_admin? # => false - def attributes=(new_attributes, guard_protected_attributes = nil) - unless guard_protected_attributes.nil? - message = "the use of 'guard_protected_attributes' will be removed from the next major release of rails, " + - "if you want to bypass mass-assignment security then look into using assign_attributes" - ActiveSupport::Deprecation.warn(message) - end - + def attributes=(new_attributes) return unless new_attributes.is_a?(Hash) - if guard_protected_attributes == false - assign_attributes(new_attributes, :without_protection => true) - else - assign_attributes(new_attributes) - end + assign_attributes(new_attributes) end # Allows you to set all the attributes for a particular mass-assignment @@ -1720,12 +1709,11 @@ MSG return unless new_attributes attributes = new_attributes.stringify_keys - role = options[:as] || :default - multi_parameter_attributes = [] + @mass_assignment_options = options unless options[:without_protection] - attributes = sanitize_for_mass_assignment(attributes, role) + attributes = sanitize_for_mass_assignment(attributes, mass_assignment_role) end attributes.each do |k, v| @@ -1738,6 +1726,7 @@ MSG end end + @mass_assignment_options = nil assign_multiparameter_attributes(multi_parameter_attributes) end @@ -1792,16 +1781,12 @@ MSG # Note also that destroying a record preserves its ID in the model instance, so deleted # models are still comparable. def ==(comparison_object) - comparison_object.equal?(self) || + super || comparison_object.instance_of?(self.class) && id.present? && comparison_object.id == id end - - # Delegates to == - def eql?(comparison_object) - self == comparison_object - end + alias :eql? :== # Delegates to id in order to allow two records of the same type and id to work with something like: # [ Person.find(1), Person.find(2), Person.find(3) ] & [ Person.find(1), Person.find(4) ] # => [ Person.find(1) ] @@ -1819,6 +1804,15 @@ MSG @attributes.frozen? end + # Allows sort on objects + def <=>(other_object) + if other_object.is_a?(self.class) + self.to_key <=> other_object.to_key + else + nil + end + end + # Backport dup from 1.9 so that initialize_dup() gets called unless Object.respond_to?(:initialize_dup) def dup # :nodoc: @@ -1870,12 +1864,16 @@ MSG # Returns the contents of the record as a nicely formatted string. def inspect - attributes_as_nice_string = self.class.column_names.collect { |name| - if has_attribute?(name) - "#{name}: #{attribute_for_inspect(name)}" - end - }.compact.join(", ") - "#<#{self.class} #{attributes_as_nice_string}>" + inspection = if @attributes + self.class.column_names.collect { |name| + if has_attribute?(name) + "#{name}: #{attribute_for_inspect(name)}" + end + }.compact.join(", ") + else + "not initialized" + end + "#<#{self.class} #{inspection}>" end protected @@ -1893,12 +1891,33 @@ MSG value end + def mass_assignment_options + @mass_assignment_options ||= {} + end + + def mass_assignment_role + mass_assignment_options[:as] || :default + end + private + # Under Ruby 1.9, Array#flatten will call #to_ary (recursively) on each of the elements + # of the array, and then rescues from the possible NoMethodError. If those elements are + # ActiveRecord::Base's, then this triggers the various method_missing's that we have, + # which significantly impacts upon performance. + # + # 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/ + def to_ary # :nodoc: + nil + end + def set_serialized_attributes - (@attributes.keys & self.class.serialized_attributes.keys).each do |key| - coder = self.class.serialized_attributes[key] - @attributes[key] = coder.load @attributes[key] + sattrs = self.class.serialized_attributes + + sattrs.each do |key, coder| + @attributes[key] = coder.load @attributes[key] if @attributes.key?(key) end end @@ -1908,8 +1927,9 @@ MSG # do Reply.new without having to set <tt>Reply[Reply.inheritance_column] = "Reply"</tt> yourself. # No such attribute would be set for objects of the Message class in that example. def ensure_proper_type - unless self.class.descends_from_active_record? - write_attribute(self.class.inheritance_column, self.class.sti_name) + klass = self.class + if klass.finder_needs_type_condition? + write_attribute(klass.inheritance_column, klass.sti_name) end end @@ -2016,7 +2036,7 @@ MSG set_values = (1..3).collect{|position| values_hash_from_param[position].blank? ? 1 : values_hash_from_param[position]} begin Date.new(*set_values) - rescue ArgumentError => ex # if Date.new raises an exception on an invalid date + rescue ArgumentError # if Date.new raises an exception on an invalid date instantiate_time_object(name, set_values).to_date # we instantiate Time object and convert it back to a date thus using Time's logic in handling invalid dates end end @@ -2083,8 +2103,10 @@ MSG end def populate_with_current_scope_attributes - self.class.scoped.scope_for_create.each do |att,value| - respond_to?("#{att}=") && send("#{att}=", value) + return unless self.class.scope_attributes? + + self.class.scope_attributes.each do |att,value| + send("#{att}=", value) if respond_to?("#{att}=") end end |