diff options
Diffstat (limited to 'activerecord/lib/active_record/associations')
12 files changed, 94 insertions, 133 deletions
diff --git a/activerecord/lib/active_record/associations/association.rb b/activerecord/lib/active_record/associations/association.rb index 268b022ab8..ca1f9f1650 100644 --- a/activerecord/lib/active_record/associations/association.rb +++ b/activerecord/lib/active_record/associations/association.rb @@ -130,8 +130,8 @@ module ActiveRecord def extensions extensions = klass.default_extensions | reflection.extensions - if scope = reflection.scope - extensions |= klass.unscoped.instance_exec(owner, &scope).extensions + if reflection.scope + extensions |= reflection.scope_for(klass.unscoped, owner).extensions end extensions diff --git a/activerecord/lib/active_record/associations/association_scope.rb b/activerecord/lib/active_record/associations/association_scope.rb index 3d79e540b8..b2dc044312 100644 --- a/activerecord/lib/active_record/associations/association_scope.rb +++ b/activerecord/lib/active_record/associations/association_scope.rb @@ -24,14 +24,10 @@ module ActiveRecord scope = klass.unscoped owner = association.owner alias_tracker = AliasTracker.create(klass.connection, klass.table_name) - chain_head, chain_tail = get_chain(reflection, association, alias_tracker) + chain = get_chain(reflection, association, alias_tracker) scope.extending! reflection.extensions - add_constraints(scope, owner, reflection, chain_head, chain_tail) - end - - def join_type - Arel::Nodes::InnerJoin + add_constraints(scope, owner, chain) end def self.get_bind_values(owner, chain) @@ -59,14 +55,15 @@ module ActiveRecord private def join(table, constraint) - table.create_join(table, table.create_on(constraint), join_type) + table.create_join(table, table.create_on(constraint)) end - def last_chain_scope(scope, table, reflection, owner) + def last_chain_scope(scope, reflection, owner) join_keys = reflection.join_keys key = join_keys.key foreign_key = join_keys.foreign_key + table = reflection.aliased_table value = transform_value(owner[foreign_key]) scope = apply_scope(scope, table, key, value) @@ -82,11 +79,13 @@ module ActiveRecord value_transformation.call(value) end - def next_chain_scope(scope, table, reflection, foreign_table, next_reflection) + def next_chain_scope(scope, reflection, next_reflection) join_keys = reflection.join_keys key = join_keys.key foreign_key = join_keys.foreign_key + table = reflection.aliased_table + foreign_table = next_reflection.aliased_table constraint = table[key].eq(foreign_table[foreign_key]) if reflection.type @@ -98,12 +97,11 @@ module ActiveRecord end class ReflectionProxy < SimpleDelegator # :nodoc: - attr_accessor :next - attr_reader :alias_name + attr_reader :aliased_table - def initialize(reflection, alias_name) + def initialize(reflection, aliased_table) super(reflection) - @alias_name = alias_name + @aliased_table = aliased_table end def all_includes; nil; end @@ -111,42 +109,33 @@ module ActiveRecord def get_chain(reflection, association, tracker) name = reflection.name - runtime_reflection = Reflection::RuntimeReflection.new(reflection, association) - previous_reflection = runtime_reflection + chain = [Reflection::RuntimeReflection.new(reflection, association)] reflection.chain.drop(1).each do |refl| - alias_name = tracker.aliased_table_for( + aliased_table = tracker.aliased_table_for( refl.table_name, refl.alias_candidate(name), refl.klass.type_caster ) - proxy = ReflectionProxy.new(refl, alias_name) - previous_reflection.next = proxy - previous_reflection = proxy + chain << ReflectionProxy.new(refl, aliased_table) end - [runtime_reflection, previous_reflection] + chain end - def add_constraints(scope, owner, refl, chain_head, chain_tail) - owner_reflection = chain_tail - table = owner_reflection.alias_name - scope = last_chain_scope(scope, table, owner_reflection, owner) - - reflection = chain_head - while reflection - table = reflection.alias_name - next_reflection = reflection.next + def add_constraints(scope, owner, chain) + scope = last_chain_scope(scope, chain.last, owner) - unless reflection == chain_tail - foreign_table = next_reflection.alias_name - scope = next_chain_scope(scope, table, reflection, foreign_table, next_reflection) - end + chain.each_cons(2) do |reflection, next_reflection| + scope = next_chain_scope(scope, reflection, next_reflection) + end + chain_head = chain.first + chain.reverse_each do |reflection| # Exclude the scope of the association itself, because that # was already merged in the #scope method. reflection.constraints.each do |scope_chain_item| - item = eval_scope(reflection, table, scope_chain_item, owner) + item = eval_scope(reflection, scope_chain_item, owner) - if scope_chain_item == refl.scope + if scope_chain_item == chain_head.scope scope.merge! item.except(:where, :includes) end @@ -158,8 +147,6 @@ module ActiveRecord scope.where_clause += item.where_clause scope.order_values |= item.order_values end - - reflection = next_reflection end scope @@ -173,8 +160,9 @@ module ActiveRecord end end - def eval_scope(reflection, table, scope, owner) - reflection.build_scope(table).instance_exec(owner, &scope) + def eval_scope(reflection, scope, owner) + relation = reflection.build_scope(reflection.aliased_table) + relation.instance_exec(owner, &scope) || relation end end end diff --git a/activerecord/lib/active_record/associations/builder/association.rb b/activerecord/lib/active_record/associations/builder/association.rb index 496b16b58f..ca3032d967 100644 --- a/activerecord/lib/active_record/associations/builder/association.rb +++ b/activerecord/lib/active_record/associations/builder/association.rb @@ -38,11 +38,6 @@ module ActiveRecord::Associations::Builder # :nodoc: def self.create_reflection(model, name, scope, options, extension = nil) raise ArgumentError, "association names must be a Symbol" unless name.kind_of?(Symbol) - if scope.is_a?(Hash) - options = scope - scope = nil - end - validate_options(options) scope = build_scope(scope, extension) diff --git a/activerecord/lib/active_record/associations/join_dependency.rb b/activerecord/lib/active_record/associations/join_dependency.rb index ac37c3c015..77b3d11b47 100644 --- a/activerecord/lib/active_record/associations/join_dependency.rb +++ b/activerecord/lib/active_record/associations/join_dependency.rb @@ -256,7 +256,8 @@ module ActiveRecord else model = construct_model(ar_parent, node, row, model_cache, id, aliases) - if node.reflection.scope_for(node.base_klass).readonly_value + if node.reflection.scope && + node.reflection.scope_for(node.base_klass.unscoped).readonly_value model.readonly! end diff --git a/activerecord/lib/active_record/associations/preloader.rb b/activerecord/lib/active_record/associations/preloader.rb index 62caf02a2c..e1754d4a19 100644 --- a/activerecord/lib/active_record/associations/preloader.rb +++ b/activerecord/lib/active_record/associations/preloader.rb @@ -91,13 +91,13 @@ module ActiveRecord # { author: :avatar } # [ :books, { author: :avatar } ] def preload(records, associations, preload_scope = nil) - records = Array.wrap(records).compact.uniq - associations = Array.wrap(associations) + records = records.compact if records.empty? [] else - associations.flat_map { |association| + records.uniq! + Array.wrap(associations).flat_map { |association| preloaders_on association, records, preload_scope } end diff --git a/activerecord/lib/active_record/associations/preloader/association.rb b/activerecord/lib/active_record/associations/preloader/association.rb index 4915a37f06..607d376a08 100644 --- a/activerecord/lib/active_record/associations/preloader/association.rb +++ b/activerecord/lib/active_record/associations/preloader/association.rb @@ -17,26 +17,20 @@ module ActiveRecord end def run(preloader) - preload(preloader) - end - - def preload(preloader) - raise NotImplementedError - end - - # The name of the key on the associated records - def association_key_name - raise NotImplementedError - end - - # The name of the key on the model which declares the association - def owner_key_name - raise NotImplementedError + associated_records_by_owner(preloader).each do |owner, records| + associate_records_to_owner(owner, records) + end end private - def options - reflection.options + # The name of the key on the associated records + def association_key_name + reflection.join_primary_key(klass) + end + + # The name of the key on the model which declares the association + def owner_key_name + reflection.join_foreign_key end def associated_records_by_owner(preloader) @@ -51,28 +45,30 @@ module ActiveRecord end end + def associate_records_to_owner(owner, records) + raise NotImplementedError + end + def owner_keys - unless defined?(@owner_keys) - @owner_keys = owners.map do |owner| - owner[owner_key_name] - end - @owner_keys.uniq! - @owner_keys.compact! - end - @owner_keys + @owner_keys ||= owners_by_key.keys end def owners_by_key unless defined?(@owners_by_key) @owners_by_key = owners.each_with_object({}) do |owner, h| - h[convert_key(owner[owner_key_name])] = owner + key = convert_key(owner[owner_key_name]) + h[key] = owner if key end end @owners_by_key end def key_conversion_required? - @key_conversion_required ||= association_key_type != owner_key_type + unless defined?(@key_conversion_required) + @key_conversion_required = (association_key_type != owner_key_type) + end + + @key_conversion_required end def convert_key(key) @@ -113,7 +109,7 @@ module ActiveRecord end def reflection_scope - @reflection_scope ||= reflection.scope_for(klass) + @reflection_scope ||= reflection.scope ? reflection.scope_for(klass.unscoped) : klass.unscoped end def build_scope @@ -123,7 +119,7 @@ module ActiveRecord scope.where!(reflection.type => model.base_class.sti_name) end - scope.merge!(reflection_scope) + scope.merge!(reflection_scope) if reflection.scope scope.merge!(preload_scope) if preload_scope scope end diff --git a/activerecord/lib/active_record/associations/preloader/belongs_to.rb b/activerecord/lib/active_record/associations/preloader/belongs_to.rb index ae9695f26a..a8e3340b23 100644 --- a/activerecord/lib/active_record/associations/preloader/belongs_to.rb +++ b/activerecord/lib/active_record/associations/preloader/belongs_to.rb @@ -4,13 +4,6 @@ module ActiveRecord module Associations class Preloader class BelongsTo < SingularAssociation #:nodoc: - def association_key_name - options[:primary_key] || klass && klass.primary_key - end - - def owner_key_name - reflection.foreign_key - end end end end diff --git a/activerecord/lib/active_record/associations/preloader/collection_association.rb b/activerecord/lib/active_record/associations/preloader/collection_association.rb index fb920a642c..fc2029f54a 100644 --- a/activerecord/lib/active_record/associations/preloader/collection_association.rb +++ b/activerecord/lib/active_record/associations/preloader/collection_association.rb @@ -5,13 +5,10 @@ module ActiveRecord class Preloader class CollectionAssociation < Association #:nodoc: private - - def preload(preloader) - associated_records_by_owner(preloader).each do |owner, records| - association = owner.association(reflection.name) - association.loaded! - association.target.concat(records) - end + def associate_records_to_owner(owner, records) + association = owner.association(reflection.name) + association.loaded! + association.target.concat(records) end end end diff --git a/activerecord/lib/active_record/associations/preloader/has_many.rb b/activerecord/lib/active_record/associations/preloader/has_many.rb index 29a1ce099d..72f55bc43f 100644 --- a/activerecord/lib/active_record/associations/preloader/has_many.rb +++ b/activerecord/lib/active_record/associations/preloader/has_many.rb @@ -4,13 +4,6 @@ module ActiveRecord module Associations class Preloader class HasMany < CollectionAssociation #:nodoc: - def association_key_name - reflection.foreign_key - end - - def owner_key_name - reflection.active_record_primary_key - end end end end diff --git a/activerecord/lib/active_record/associations/preloader/has_one.rb b/activerecord/lib/active_record/associations/preloader/has_one.rb index d87abf630f..e339b65fb5 100644 --- a/activerecord/lib/active_record/associations/preloader/has_one.rb +++ b/activerecord/lib/active_record/associations/preloader/has_one.rb @@ -4,13 +4,6 @@ module ActiveRecord module Associations class Preloader class HasOne < SingularAssociation #:nodoc: - def association_key_name - reflection.foreign_key - end - - def owner_key_name - reflection.active_record_primary_key - end end end end diff --git a/activerecord/lib/active_record/associations/preloader/singular_association.rb b/activerecord/lib/active_record/associations/preloader/singular_association.rb index 266b5f6b1c..30a92411e3 100644 --- a/activerecord/lib/active_record/associations/preloader/singular_association.rb +++ b/activerecord/lib/active_record/associations/preloader/singular_association.rb @@ -5,14 +5,9 @@ module ActiveRecord class Preloader class SingularAssociation < Association #:nodoc: private - - def preload(preloader) - associated_records_by_owner(preloader).each do |owner, associated_records| - record = associated_records.first - - association = owner.association(reflection.name) - association.target = record - end + def associate_records_to_owner(owner, records) + association = owner.association(reflection.name) + association.target = records.first end end end diff --git a/activerecord/lib/active_record/associations/preloader/through_association.rb b/activerecord/lib/active_record/associations/preloader/through_association.rb index de4b847a41..fa32cc5553 100644 --- a/activerecord/lib/active_record/associations/preloader/through_association.rb +++ b/activerecord/lib/active_record/associations/preloader/through_association.rb @@ -28,6 +28,8 @@ module ActiveRecord middle_records = through_records.flat_map(&:last) + reflection_scope = reflection_scope() if reflection.scope + preloaders = preloader.preload(middle_records, source_reflection.name, reflection_scope) @@ -49,7 +51,7 @@ module ActiveRecord }.compact # Respect the order on `reflection_scope` if it exists, else use the natural order. - if reflection_scope.values[:order].present? + if reflection_scope && !reflection_scope.order_values.empty? @id_map ||= id_to_index_map @preloaded_records rhs_records.sort_by { |rhs| @id_map[rhs] } else @@ -67,10 +69,7 @@ module ActiveRecord id_map end - def reset_association(owners, association_name, through_scope) - should_reset = (through_scope != through_reflection.klass.unscoped) || - (options[:source_type] && through_reflection.collection?) - + def reset_association(owners, association_name, should_reset) # Don't cache the association - we would only be caching a subset if should_reset owners.each { |owner| @@ -81,29 +80,40 @@ module ActiveRecord def through_scope scope = through_reflection.klass.unscoped - values = reflection_scope.values + options = reflection.options if options[:source_type] scope.where! reflection.foreign_type => options[:source_type] - else - unless reflection_scope.where_clause.empty? - scope.includes_values = Array(values[:includes] || options[:source]) - scope.where_clause = reflection_scope.where_clause - if joins = values[:joins] - scope.joins!(source_reflection.name => joins) - end - if left_outer_joins = values[:left_outer_joins] - scope.left_outer_joins!(source_reflection.name => left_outer_joins) - end + elsif !reflection_scope.where_clause.empty? + scope.where_clause = reflection_scope.where_clause + values = reflection_scope.values + + if includes = values[:includes] + scope.includes!(source_reflection.name => includes) + else + scope.includes!(source_reflection.name) + end + + if values[:references] && !values[:references].empty? + scope.references!(values[:references]) + else + scope.references!(source_reflection.table_name) + end + + if joins = values[:joins] + scope.joins!(source_reflection.name => joins) + end + + if left_outer_joins = values[:left_outer_joins] + scope.left_outer_joins!(source_reflection.name => left_outer_joins) end - scope.references! values[:references] if scope.eager_loading? && order_values = values[:order] scope = scope.order(order_values) end end - scope + scope unless scope.empty_scope? end end end |