diff options
Diffstat (limited to 'activerecord/lib/active_record/relation')
9 files changed, 103 insertions, 33 deletions
diff --git a/activerecord/lib/active_record/relation/batches.rb b/activerecord/lib/active_record/relation/batches.rb index de005e2810..243ef0eae9 100644 --- a/activerecord/lib/active_record/relation/batches.rb +++ b/activerecord/lib/active_record/relation/batches.rb @@ -187,7 +187,7 @@ module ActiveRecord loop do if load - records = batch_relation.to_a + records = batch_relation.records ids = records.map(&:id) yielded_relation = self.where(primary_key => ids) yielded_relation.load_records(records) diff --git a/activerecord/lib/active_record/relation/batches/batch_enumerator.rb b/activerecord/lib/active_record/relation/batches/batch_enumerator.rb index c6e39814dd..13393dc605 100644 --- a/activerecord/lib/active_record/relation/batches/batch_enumerator.rb +++ b/activerecord/lib/active_record/relation/batches/batch_enumerator.rb @@ -35,7 +35,7 @@ module ActiveRecord return to_enum(:each_record) unless block_given? @relation.to_enum(:in_batches, of: @of, start: @start, finish: @finish, load: true).each do |relation| - relation.to_a.each { |record| yield record } + relation.records.each { |record| yield record } end end diff --git a/activerecord/lib/active_record/relation/delegation.rb b/activerecord/lib/active_record/relation/delegation.rb index e4e5d63006..f2578f5f96 100644 --- a/activerecord/lib/active_record/relation/delegation.rb +++ b/activerecord/lib/active_record/relation/delegation.rb @@ -37,7 +37,8 @@ module ActiveRecord # for each different klass, and the delegations are compiled into that subclass only. delegate :to_xml, :to_yaml, :length, :collect, :map, :each, :all?, :include?, :to_ary, :join, - :[], :&, :|, :+, :-, :sample, :shuffle, :reverse, :compact, to: :to_a + :[], :&, :|, :+, :-, :sample, :reverse, :compact, :in_groups, :in_groups_of, + :shuffle, :split, to: :records delegate :table_name, :quoted_table_name, :primary_key, :quoted_primary_key, :connection, :columns_hash, :to => :klass diff --git a/activerecord/lib/active_record/relation/finder_methods.rb b/activerecord/lib/active_record/relation/finder_methods.rb index a4280c5f33..0037398554 100644 --- a/activerecord/lib/active_record/relation/finder_methods.rb +++ b/activerecord/lib/active_record/relation/finder_methods.rb @@ -145,15 +145,21 @@ module ActiveRecord # # [#<Person id:4>, #<Person id:3>, #<Person id:2>] def last(limit = nil) - if limit - if order_values.empty? && primary_key - order(arel_attribute(primary_key).desc).limit(limit).reverse - else - to_a.last(limit) - end - else - find_last - end + return find_last(limit) if loaded? || limit_value + + result = limit(limit || 1) + result.order!(arel_attribute(primary_key)) if order_values.empty? && primary_key + result = result.reverse_order! + + limit ? result.reverse : result.first + rescue ActiveRecord::IrreversibleOrderError + ActiveSupport::Deprecation.warn(<<-WARNING.squish) + Finding a last element by loading the relation when SQL ORDER + can not be reversed is deprecated. + Rails 5.1 will raise ActiveRecord::IrreversibleOrderError in this case. + Please call `to_a.last` if you still want to load the relation. + WARNING + find_last(limit) end # Same as #last but raises ActiveRecord::RecordNotFound if no record @@ -330,7 +336,7 @@ module ActiveRecord end # This method is called whenever no records are found with either a single - # id or multiple ids and raises a ActiveRecord::RecordNotFound exception. + # id or multiple ids and raises an ActiveRecord::RecordNotFound exception. # # The error message is different depending on whether a single id or # multiple ids are provided. If multiple ids are provided, then the number @@ -500,7 +506,7 @@ module ActiveRecord def find_some_ordered(ids) ids = ids.slice(offset_value || 0, limit_value || ids.size) || [] - result = except(:limit, :offset).where(primary_key => ids).to_a + result = except(:limit, :offset).where(primary_key => ids).records if result.size == ids.size pk_type = @klass.type_for_attribute(primary_key) @@ -516,7 +522,7 @@ module ActiveRecord if loaded? @records.first else - @take ||= limit(1).to_a.first + @take ||= limit(1).records.first end end @@ -555,19 +561,6 @@ module ActiveRecord relation.limit(limit).to_a end - def find_last - if loaded? - @records.last - else - @last ||= - if limit_value - to_a.last - else - reverse_order.limit(1).to_a.first - end - end - end - private def find_nth_with_limit_and_offset(index, limit, offset:) # :nodoc: @@ -578,5 +571,9 @@ module ActiveRecord find_nth_with_limit(index, limit) end end + + def find_last(limit) + limit ? records.last(limit) : records.last + end end end diff --git a/activerecord/lib/active_record/relation/predicate_builder.rb b/activerecord/lib/active_record/relation/predicate_builder.rb index 0f88791d92..953495a8b6 100644 --- a/activerecord/lib/active_record/relation/predicate_builder.rb +++ b/activerecord/lib/active_record/relation/predicate_builder.rb @@ -5,6 +5,7 @@ module ActiveRecord require 'active_record/relation/predicate_builder/base_handler' require 'active_record/relation/predicate_builder/basic_object_handler' require 'active_record/relation/predicate_builder/class_handler' + require 'active_record/relation/predicate_builder/polymorphic_array_handler' require 'active_record/relation/predicate_builder/range_handler' require 'active_record/relation/predicate_builder/relation_handler' @@ -22,6 +23,7 @@ module ActiveRecord register_handler(Relation, RelationHandler.new) register_handler(Array, ArrayHandler.new(self)) register_handler(AssociationQueryValue, AssociationQueryHandler.new(self)) + register_handler(PolymorphicArrayValue, PolymorphicArrayHandler.new(self)) end def build_from_hash(attributes) @@ -40,10 +42,7 @@ module ActiveRecord # # For polymorphic relationships, find the foreign key and type: # PriceEstimate.where(estimate_of: treasure) - if table.associated_with?(column) - value = AssociationQueryValue.new(table.associated_table(column), value) - end - + value = AssociationQueryHandler.value_for(table, column, value) if table.associated_with?(column) build(table.arel_attribute(column), value) end diff --git a/activerecord/lib/active_record/relation/predicate_builder/association_query_handler.rb b/activerecord/lib/active_record/relation/predicate_builder/association_query_handler.rb index e81be63cd3..d7fd878265 100644 --- a/activerecord/lib/active_record/relation/predicate_builder/association_query_handler.rb +++ b/activerecord/lib/active_record/relation/predicate_builder/association_query_handler.rb @@ -1,6 +1,16 @@ module ActiveRecord class PredicateBuilder class AssociationQueryHandler # :nodoc: + def self.value_for(table, column, value) + klass = if table.associated_table(column).polymorphic_association? && ::Array === value && value.first.is_a?(Base) + PolymorphicArrayValue + else + AssociationQueryValue + end + + klass.new(table.associated_table(column), value) + end + def initialize(predicate_builder) @predicate_builder = predicate_builder end diff --git a/activerecord/lib/active_record/relation/predicate_builder/polymorphic_array_handler.rb b/activerecord/lib/active_record/relation/predicate_builder/polymorphic_array_handler.rb new file mode 100644 index 0000000000..b6c6240343 --- /dev/null +++ b/activerecord/lib/active_record/relation/predicate_builder/polymorphic_array_handler.rb @@ -0,0 +1,57 @@ +module ActiveRecord + class PredicateBuilder + class PolymorphicArrayHandler # :nodoc: + def initialize(predicate_builder) + @predicate_builder = predicate_builder + end + + def call(attribute, value) + table = value.associated_table + queries = value.type_to_ids_mapping.map do |type, ids| + { table.association_foreign_type.to_s => type, table.association_foreign_key.to_s => ids } + end + + predicates = queries.map { |query| predicate_builder.build_from_hash(query) } + + if predicates.size > 1 + type_and_ids_predicates = predicates.map { |type_predicate, id_predicate| Arel::Nodes::Grouping.new(type_predicate.and(id_predicate)) } + type_and_ids_predicates.inject(&:or) + else + predicates.first + end + end + + protected + + attr_reader :predicate_builder + end + + class PolymorphicArrayValue # :nodoc: + attr_reader :associated_table, :values + + def initialize(associated_table, values) + @associated_table = associated_table + @values = values + end + + def type_to_ids_mapping + default_hash = Hash.new { |hsh, key| hsh[key] = [] } + values.each_with_object(default_hash) { |value, hash| hash[base_class(value).name] << convert_to_id(value) } + end + + private + + def primary_key(value) + associated_table.association_primary_key(base_class(value)) + end + + def base_class(value) + value.class.base_class + end + + def convert_to_id(value) + value._read_attribute(primary_key(value)) + end + end + end +end diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index 91bfa4d131..4533f3263f 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -655,6 +655,10 @@ module ActiveRecord # # SELECT `posts`.* FROM `posts` WHERE (('id = 1' OR 'author_id = 3')) # def or(other) + unless other.is_a? Relation + raise ArgumentError, "You have passed #{other.class.name} object to #or. Pass an ActiveRecord::Relation object instead." + end + spawn.or!(other) end @@ -1112,6 +1116,8 @@ module ActiveRecord order_query.flat_map do |o| case o + when Arel::Attribute + o.desc when Arel::Nodes::Ordering o.reverse when String diff --git a/activerecord/lib/active_record/relation/spawn_methods.rb b/activerecord/lib/active_record/relation/spawn_methods.rb index 67d7f83cb4..d5c18a2a4a 100644 --- a/activerecord/lib/active_record/relation/spawn_methods.rb +++ b/activerecord/lib/active_record/relation/spawn_methods.rb @@ -29,7 +29,7 @@ module ActiveRecord # This is mainly intended for sharing common conditions between multiple associations. def merge(other) if other.is_a?(Array) - to_a & other + records & other elsif other spawn.merge!(other) else |