diff options
Diffstat (limited to 'activerecord/lib/active_record/reflection.rb')
| -rw-r--r-- | activerecord/lib/active_record/reflection.rb | 52 |
1 files changed, 42 insertions, 10 deletions
diff --git a/activerecord/lib/active_record/reflection.rb b/activerecord/lib/active_record/reflection.rb index 0eec6774a0..dd80ec6274 100644 --- a/activerecord/lib/active_record/reflection.rb +++ b/activerecord/lib/active_record/reflection.rb @@ -6,9 +6,9 @@ module ActiveRecord extend ActiveSupport::Concern included do - class_attribute :reflections + class_attribute :_reflections class_attribute :aggregate_reflections - self.reflections = {} + self._reflections = {} self.aggregate_reflections = {} end @@ -24,7 +24,7 @@ module ActiveRecord end def self.add_reflection(ar, name, reflection) - ar.reflections = ar.reflections.merge(name.to_s => reflection) + ar._reflections = ar._reflections.merge(name.to_s => reflection) end def self.add_aggregate_reflection(ar, name, reflection) @@ -53,6 +53,24 @@ module ActiveRecord aggregate_reflections[aggregation.to_s] end + # Returns a Hash of name of the reflection as the key and a AssociationReflection as the value. + # + # Account.reflections # => {balance: AggregateReflection} + # + # @api public + def reflections + ref = {} + _reflections.each do |name, reflection| + parent_name, parent_reflection = reflection.parent_reflection + if parent_name + ref[parent_name] = parent_reflection + else + ref[name] = reflection + end + end + ref + end + # Returns an array of AssociationReflection objects for all the # associations in the class. If you only want to reflect on a certain # association type, pass in the symbol (<tt>:has_many</tt>, <tt>:has_one</tt>, @@ -63,6 +81,7 @@ module ActiveRecord # Account.reflect_on_all_associations # returns an array of all associations # Account.reflect_on_all_associations(:has_many) # returns an array of all has_many associations # + # @api public def reflect_on_all_associations(macro = nil) association_reflections = reflections.values macro ? association_reflections.select { |reflection| reflection.macro == macro } : association_reflections @@ -73,11 +92,19 @@ module ActiveRecord # Account.reflect_on_association(:owner) # returns the owner AssociationReflection # Invoice.reflect_on_association(:line_items).macro # returns :has_many # + # @api public def reflect_on_association(association) reflections[association.to_s] end + # @api private + def _reflect_on_association(association) #:nodoc: + _reflections[association.to_s] + end + # Returns an array of AssociationReflection objects for all associations which have <tt>:autosave</tt> enabled. + # + # @api public def reflect_on_all_autosave_associations reflections.values.select { |reflection| reflection.options[:autosave] } end @@ -129,6 +156,10 @@ module ActiveRecord def autosave=(autosave) @automatic_inverse_of = false @options[:autosave] = autosave + _, parent_reflection = self.parent_reflection + if parent_reflection + parent_reflection.autosave = autosave + end end # Returns the class for the macro. @@ -193,10 +224,11 @@ module ActiveRecord end attr_reader :type, :foreign_type + attr_accessor :parent_reflection # [:name, Reflection] def initialize(macro, name, scope, options, active_record) super - @collection = :has_many == macro + @collection = [:has_many, :has_and_belongs_to_many].include?(macro) @automatic_inverse_of = nil @type = options[:as] && "#{options[:as]}_type" @foreign_type = options[:foreign_type] || "#{name}_type" @@ -330,12 +362,12 @@ Joining, Preloading and eager loading of these associations is deprecated and wi def inverse_of return unless inverse_name - @inverse_of ||= klass.reflect_on_association inverse_name + @inverse_of ||= klass._reflect_on_association inverse_name end def polymorphic_inverse_of(associated_class) if has_inverse? - if inverse_relationship = associated_class.reflect_on_association(options[:inverse_of]) + if inverse_relationship = associated_class._reflect_on_association(options[:inverse_of]) inverse_relationship else raise InverseOfAssociationNotFoundError.new(self, associated_class) @@ -436,7 +468,7 @@ Joining, Preloading and eager loading of these associations is deprecated and wi inverse_name = ActiveSupport::Inflector.underscore(active_record.name).to_sym begin - reflection = klass.reflect_on_association(inverse_name) + reflection = klass._reflect_on_association(inverse_name) rescue NameError # Give up: we couldn't compute the klass type so we won't be able # to find any associations either. @@ -535,7 +567,7 @@ Joining, Preloading and eager loading of these associations is deprecated and wi # # => <ActiveRecord::Reflection::AssociationReflection: @macro=:belongs_to, @name=:tag, @active_record=Tagging, @plural_name="tags"> # def source_reflection - through_reflection.klass.reflect_on_association(source_reflection_name) + through_reflection.klass._reflect_on_association(source_reflection_name) end # Returns the AssociationReflection object specified in the <tt>:through</tt> option @@ -551,7 +583,7 @@ Joining, Preloading and eager loading of these associations is deprecated and wi # # => <ActiveRecord::Reflection::AssociationReflection: @macro=:has_many, @name=:taggings, @active_record=Post, @plural_name="taggings"> # def through_reflection - active_record.reflect_on_association(options[:through]) + active_record._reflect_on_association(options[:through]) end # Returns an array of reflections which are involved in this association. Each item in the @@ -658,7 +690,7 @@ Joining, Preloading and eager loading of these associations is deprecated and wi names = [name.to_s.singularize, name].collect { |n| n.to_sym }.uniq names = names.find_all { |n| - through_reflection.klass.reflect_on_association(n) + through_reflection.klass._reflect_on_association(n) } if names.length > 1 |