diff options
Diffstat (limited to 'activerecord')
27 files changed, 193 insertions, 45 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index d39e808f5b..00ea49fa9d 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,3 +1,28 @@ +* PostgreSQL adapter only warns once for every missing OID per connection. + + Fixes #14275. + + *Matthew Draper*, *Yves Senn* + +* PostgreSQL adapter automatically reloads it's type map when encountering + unknown OIDs. + + Fixes #14678. + + *Matthew Draper*, *Yves Senn* + +* Fix insertion of records via `has_many :through` association with scope. + + Fixes #3548. + + *Ivan Antropov* + +* Auto-generate stable fixture UUIDs on PostgreSQL. + + Fixes: #11524 + + *Roderick van Domburg* + * Fixed a problem where an enum would overwrite values of another enum with the same name in an unrelated class. diff --git a/activerecord/lib/active_record/associations/has_many_through_association.rb b/activerecord/lib/active_record/associations/has_many_through_association.rb index 64bc98c642..c2eff0d8ce 100644 --- a/activerecord/lib/active_record/associations/has_many_through_association.rb +++ b/activerecord/lib/active_record/associations/has_many_through_association.rb @@ -83,12 +83,16 @@ module ActiveRecord @through_records[record.object_id] ||= begin ensure_mutable - through_record = through_association.build + through_record = through_association.build through_scope_attributes through_record.send("#{source_reflection.name}=", record) through_record end end + def through_scope_attributes + scope.where_values_hash(through_association.reflection.name.to_s) + end + def save_through_record(record) build_through_record(record).save! ensure diff --git a/activerecord/lib/active_record/autosave_association.rb b/activerecord/lib/active_record/autosave_association.rb index e9622ca0c1..f149d8f127 100644 --- a/activerecord/lib/active_record/autosave_association.rb +++ b/activerecord/lib/active_record/autosave_association.rb @@ -35,7 +35,7 @@ module ActiveRecord # # === One-to-one Example # - # class Post + # class Post < ActiveRecord::Base # has_one :author, autosave: true # end # @@ -76,7 +76,7 @@ module ActiveRecord # # When <tt>:autosave</tt> is not declared new children are saved when their parent is saved: # - # class Post + # class Post < ActiveRecord::Base # has_many :comments # :autosave option is not declared # end # @@ -95,20 +95,23 @@ module ActiveRecord # When <tt>:autosave</tt> is true all children are saved, no matter whether they # are new records or not: # - # class Post + # class Post < ActiveRecord::Base # has_many :comments, autosave: true # end # # post = Post.create(title: 'ruby rocks') # post.comments.create(body: 'hello world') # post.comments[0].body = 'hi everyone' - # post.save # => saves both post and comment, with 'hi everyone' as body + # post.comments.build(body: "good morning.") + # post.title += "!" + # post.save # => saves both post and comments. # # Destroying one of the associated models as part of the parent's save action # is as simple as marking it for destruction: # - # post.comments.last.mark_for_destruction - # post.comments.last.marked_for_destruction? # => true + # post.comments # => [#<Comment id: 1, ...>, #<Comment id: 2, ...]> + # post.comments[1].mark_for_destruction + # post.comments[1].marked_for_destruction? # => true # post.comments.length # => 2 # # Note that the model is _not_ yet removed from the database: diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb index 51ee2829b2..a5fb048b1e 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb @@ -142,10 +142,7 @@ module ActiveRecord fields.each_with_index do |fname, i| ftype = result.ftype i fmod = result.fmod i - types[fname] = type_map.fetch(ftype, fmod) { |oid, mod| - warn "unknown OID: #{fname}(#{oid}) (#{sql})" - OID::Identity.new - } + types[fname] = get_oid_type(ftype, fmod, fname) end ret = ActiveRecord::Result.new(fields, result.values, types) diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb index 50a73aa666..1229b4851a 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb @@ -182,9 +182,7 @@ module ActiveRecord def columns(table_name) # Limit, precision, and scale are all handled by the superclass. column_definitions(table_name).map do |column_name, type, default, notnull, oid, fmod| - oid = type_map.fetch(oid.to_i, fmod.to_i) { - OID::Identity.new - } + oid = get_oid_type(oid.to_i, fmod.to_i, column_name) PostgreSQLColumn.new(column_name, default, oid, type, notnull == 'f') end end diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb index 3510e4f3b0..0485093123 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb @@ -559,6 +559,17 @@ module ActiveRecord @type_map end + def get_oid_type(oid, fmod, column_name) + if !type_map.key?(oid) + initialize_type_map(type_map, [oid]) + end + + type_map.fetch(oid, fmod) { + warn "unknown OID #{oid}: failed to recognize type of '#{column_name}'. It will be treated as String." + type_map[oid] = OID::Identity.new + } + end + def reload_type_map type_map.clear initialize_type_map(type_map) @@ -583,19 +594,25 @@ module ActiveRecord type_map end - def initialize_type_map(type_map) + def initialize_type_map(type_map, oids = nil) if supports_ranges? - result = execute(<<-SQL, 'SCHEMA') + query = <<-SQL SELECT t.oid, t.typname, t.typelem, t.typdelim, t.typinput, r.rngsubtype, t.typtype, t.typbasetype FROM pg_type as t LEFT JOIN pg_range as r ON oid = rngtypid SQL else - result = execute(<<-SQL, 'SCHEMA') + query = <<-SQL SELECT t.oid, t.typname, t.typelem, t.typdelim, t.typinput, t.typtype, t.typbasetype FROM pg_type as t SQL end + + if oids + query += "WHERE t.oid::integer IN (%s)" % oids.join(", ") + end + + result = execute(query, 'SCHEMA') ranges, nodes = result.partition { |row| row['typtype'] == 'r' } enums, nodes = nodes.partition { |row| row['typtype'] == 'e' } domains, nodes = nodes.partition { |row| row['typtype'] == 'd' } diff --git a/activerecord/lib/active_record/fixtures.rb b/activerecord/lib/active_record/fixtures.rb index 6f134bbef8..47d32fae05 100644 --- a/activerecord/lib/active_record/fixtures.rb +++ b/activerecord/lib/active_record/fixtures.rb @@ -2,6 +2,7 @@ require 'erb' require 'yaml' require 'zlib' require 'active_support/dependencies' +require 'active_support/core_ext/securerandom' require 'active_record/fixture_set/file' require 'active_record/errors' @@ -550,9 +551,13 @@ module ActiveRecord end # Returns a consistent, platform-independent identifier for +label+. - # Identifiers are positive integers less than 2^30. - def self.identify(label) - Zlib.crc32(label.to_s) % MAX_ID + # Integer identifiers are values less than 2^30. UUIDs are RFC 4122 version 5 SHA-1 hashes. + def self.identify(label, column_type = :integer) + if column_type == :uuid + SecureRandom.uuid_v5(SecureRandom::UUID_OID_NAMESPACE, label.to_s) + else + Zlib.crc32(label.to_s) % MAX_ID + end end # Superclass for the evaluation contexts used by ERB fixtures. @@ -633,7 +638,7 @@ module ActiveRecord # generate a primary key if necessary if has_primary_key_column? && !row.include?(primary_key_name) - row[primary_key_name] = ActiveRecord::FixtureSet.identify(label) + row[primary_key_name] = ActiveRecord::FixtureSet.identify(label, primary_key_type) end # If STI is used, find the correct subclass for association reflection @@ -656,7 +661,8 @@ module ActiveRecord row[association.foreign_type] = $1 end - row[fk_name] = ActiveRecord::FixtureSet.identify(value) + fk_type = association.active_record.columns_hash[association.foreign_key].type + row[fk_name] = ActiveRecord::FixtureSet.identify(value, fk_type) end when :has_many if association.options[:through] @@ -683,6 +689,10 @@ module ActiveRecord def name @association.name end + + def primary_key_type + @association.klass.column_types[@association.klass.primary_key].type + end end class HasManyThroughProxy < ReflectionProxy # :nodoc: @@ -700,17 +710,22 @@ module ActiveRecord @primary_key_name ||= model_class && model_class.primary_key end + def primary_key_type + @primary_key_type ||= model_class && model_class.column_types[model_class.primary_key].type + end + def add_join_records(rows, row, association) # This is the case when the join table has no fixtures file if (targets = row.delete(association.name.to_s)) - table_name = association.join_table - lhs_key = association.lhs_key - rhs_key = association.rhs_key + table_name = association.join_table + column_type = association.primary_key_type + lhs_key = association.lhs_key + rhs_key = association.rhs_key targets = targets.is_a?(Array) ? targets : targets.split(/\s*,\s*/) rows[table_name].concat targets.map { |target| { lhs_key => row[primary_key_name], - rhs_key => ActiveRecord::FixtureSet.identify(target) } + rhs_key => ActiveRecord::FixtureSet.identify(target, column_type) } } end end diff --git a/activerecord/lib/active_record/reflection.rb b/activerecord/lib/active_record/reflection.rb index 03b5bdc46c..1724ea95b0 100644 --- a/activerecord/lib/active_record/reflection.rb +++ b/activerecord/lib/active_record/reflection.rb @@ -22,11 +22,11 @@ module ActiveRecord end def self.add_reflection(ar, name, reflection) - ar.reflections = ar.reflections.merge(name => reflection) + ar.reflections = ar.reflections.merge(name.to_s => reflection) end def self.add_aggregate_reflection(ar, name, reflection) - ar.aggregate_reflections = ar.aggregate_reflections.merge(name => reflection) + ar.aggregate_reflections = ar.aggregate_reflections.merge(name.to_s => reflection) end # \Reflection enables to interrogate Active Record classes and objects @@ -48,7 +48,7 @@ module ActiveRecord # Account.reflect_on_aggregation(:balance) # => the balance AggregateReflection # def reflect_on_aggregation(aggregation) - aggregate_reflections[aggregation] + aggregate_reflections[aggregation.to_s] end # Returns an array of AssociationReflection objects for all the @@ -72,7 +72,7 @@ module ActiveRecord # Invoice.reflect_on_association(:line_items).macro # returns :has_many # def reflect_on_association(association) - reflections[association] + reflections[association.to_s] end # Returns an array of AssociationReflection objects for all associations which have <tt>:autosave</tt> enabled. @@ -617,7 +617,7 @@ module ActiveRecord # # => [:tag, :tags] # def source_reflection_names - (options[:source] ? [options[:source]] : [name.to_s.singularize, name]).collect { |n| n.to_sym }.uniq + options[:source] ? [options[:source]] : [name.to_s.singularize, name].uniq end def source_reflection_name # :nodoc: diff --git a/activerecord/lib/active_record/relation.rb b/activerecord/lib/active_record/relation.rb index 4d37ac6e2b..787f55e2e7 100644 --- a/activerecord/lib/active_record/relation.rb +++ b/activerecord/lib/active_record/relation.rb @@ -529,9 +529,9 @@ module ActiveRecord # # User.where(name: 'Oscar').where_values_hash # # => {name: "Oscar"} - def where_values_hash + def where_values_hash(relation_table_name = table_name) equalities = where_values.grep(Arel::Nodes::Equality).find_all { |node| - node.left.relation.name == table_name + node.left.relation.name == relation_table_name } binds = Hash[bind_values.find_all(&:first).map { |column, v| [column.name, v] }] diff --git a/activerecord/test/cases/adapters/postgresql/bytea_test.rb b/activerecord/test/cases/adapters/postgresql/bytea_test.rb index 84fa199f17..e3478856c8 100644 --- a/activerecord/test/cases/adapters/postgresql/bytea_test.rb +++ b/activerecord/test/cases/adapters/postgresql/bytea_test.rb @@ -72,7 +72,7 @@ class PostgresqlByteaTest < ActiveRecord::TestCase def test_via_to_sql data = "'\u001F\\" - record = ByteaDataType.create(payload: data) + ByteaDataType.create(payload: data) sql = ByteaDataType.where(payload: data).select(:payload).to_sql result = @connection.query(sql) assert_equal([[data]], result) diff --git a/activerecord/test/cases/adapters/postgresql/domain_test.rb b/activerecord/test/cases/adapters/postgresql/domain_test.rb index 214e89dd7f..5286a847a4 100644 --- a/activerecord/test/cases/adapters/postgresql/domain_test.rb +++ b/activerecord/test/cases/adapters/postgresql/domain_test.rb @@ -19,9 +19,6 @@ class PostgresqlDomainTest < ActiveRecord::TestCase t.column :price, :custom_money end end - - # reload type map after creating the enum type - @connection.send(:reload_type_map) end teardown do diff --git a/activerecord/test/cases/adapters/postgresql/enum_test.rb b/activerecord/test/cases/adapters/postgresql/enum_test.rb index 73da5a74ab..4146b117f6 100644 --- a/activerecord/test/cases/adapters/postgresql/enum_test.rb +++ b/activerecord/test/cases/adapters/postgresql/enum_test.rb @@ -21,8 +21,6 @@ class PostgresqlEnumTest < ActiveRecord::TestCase t.column :current_mood, :mood end end - # reload type map after creating the enum type - @connection.send(:reload_type_map) end teardown do diff --git a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb index 49d8ec238d..b7791078db 100644 --- a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb +++ b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb @@ -1,11 +1,13 @@ # encoding: utf-8 require "cases/helper" require 'support/ddl_helper' +require 'support/connection_helper' module ActiveRecord module ConnectionAdapters class PostgreSQLAdapterTest < ActiveRecord::TestCase include DdlHelper + include ConnectionHelper def setup @connection = ActiveRecord::Base.connection @@ -357,6 +359,43 @@ module ActiveRecord end end + def test_reload_type_map_for_newly_defined_types + @connection.execute "CREATE TYPE feeling AS ENUM ('good', 'bad')" + result = @connection.select_all "SELECT 'good'::feeling" + assert_instance_of(PostgreSQLAdapter::OID::Enum, + result.column_types["feeling"]) + ensure + @connection.execute "DROP TYPE IF EXISTS feeling" + reset_connection + end + + def test_only_reload_type_map_once_for_every_unknown_type + silence_warnings do + assert_queries 2, ignore_none: true do + @connection.select_all "SELECT NULL::anyelement" + end + assert_queries 1, ignore_none: true do + @connection.select_all "SELECT NULL::anyelement" + end + assert_queries 2, ignore_none: true do + @connection.select_all "SELECT NULL::anyarray" + end + end + ensure + reset_connection + end + + def test_only_warn_on_first_encounter_of_unknown_oid + warning = capture(:stderr) { + @connection.select_all "SELECT NULL::anyelement" + @connection.select_all "SELECT NULL::anyelement" + @connection.select_all "SELECT NULL::anyelement" + } + assert_match(/\Aunknown OID \d+: failed to recognize type of 'anyelement'. It will be treated as String.\n\z/, warning) + ensure + reset_connection + end + private def insert(ctx, data) binds = data.map { |name, value| diff --git a/activerecord/test/cases/adapters/postgresql/range_test.rb b/activerecord/test/cases/adapters/postgresql/range_test.rb index 57c7da2657..060b17d071 100644 --- a/activerecord/test/cases/adapters/postgresql/range_test.rb +++ b/activerecord/test/cases/adapters/postgresql/range_test.rb @@ -34,7 +34,6 @@ _SQL @connection.add_column 'postgresql_ranges', 'float_range', 'floatrange' end - @connection.send :reload_type_map PostgresqlRange.reset_column_information rescue ActiveRecord::StatementInvalid skip "do not test on PG without range" diff --git a/activerecord/test/cases/associations/has_many_through_associations_test.rb b/activerecord/test/cases/associations/has_many_through_associations_test.rb index 026a7fe635..6675e19dd9 100644 --- a/activerecord/test/cases/associations/has_many_through_associations_test.rb +++ b/activerecord/test/cases/associations/has_many_through_associations_test.rb @@ -1102,7 +1102,19 @@ class HasManyThroughAssociationsTest < ActiveRecord::TestCase assert_equal [posts(:thinking)], person.reload.first_posts end - def test_has_many_through_with_includes_in_through_association_scope + test "has many through with includes in through association scope" do assert_not_empty posts(:welcome).author_address_extra_with_address end + + test "insert records via has_many_through association with scope" do + club = Club.create! + member = Member.create! + Membership.create!(club: club, member: member) + + club.favourites << member + assert_equal [member], club.favourites + + club.reload + assert_equal [member], club.favourites + end end diff --git a/activerecord/test/cases/fixtures_test.rb b/activerecord/test/cases/fixtures_test.rb index cf0235b8c5..8bbc0af758 100644 --- a/activerecord/test/cases/fixtures_test.rb +++ b/activerecord/test/cases/fixtures_test.rb @@ -677,6 +677,12 @@ end class FoxyFixturesTest < ActiveRecord::TestCase fixtures :parrots, :parrots_pirates, :pirates, :treasures, :mateys, :ships, :computers, :developers, :"admin/accounts", :"admin/users" + if ActiveRecord::Base.connection.adapter_name == 'PostgreSQL' + require 'models/uuid_parent' + require 'models/uuid_child' + fixtures :uuid_parents, :uuid_children + end + def test_identifies_strings assert_equal(ActiveRecord::FixtureSet.identify("foo"), ActiveRecord::FixtureSet.identify("foo")) assert_not_equal(ActiveRecord::FixtureSet.identify("foo"), ActiveRecord::FixtureSet.identify("FOO")) @@ -689,6 +695,9 @@ class FoxyFixturesTest < ActiveRecord::TestCase def test_identifies_consistently assert_equal 207281424, ActiveRecord::FixtureSet.identify(:ruby) assert_equal 1066363776, ActiveRecord::FixtureSet.identify(:sapphire_2) + + assert_equal 'f92b6bda-0d0d-5fe1-9124-502b18badded', ActiveRecord::FixtureSet.identify(:daddy, :uuid) + assert_equal 'b4b10018-ad47-595d-b42f-d8bdaa6d01bf', ActiveRecord::FixtureSet.identify(:sonny, :uuid) end TIMESTAMP_COLUMNS = %w(created_at created_on updated_at updated_on) diff --git a/activerecord/test/cases/helper.rb b/activerecord/test/cases/helper.rb index 5ed508a799..eaf2cada9d 100644 --- a/activerecord/test/cases/helper.rb +++ b/activerecord/test/cases/helper.rb @@ -111,6 +111,15 @@ def verify_default_timezone_config end end +def enable_uuid_ossp!(connection) + return false unless connection.supports_extensions? + return true if connection.extension_enabled?('uuid-ossp') + + connection.enable_extension 'uuid-ossp' + connection.commit_db_transaction + connection.reconnect! +end + unless ENV['FIXTURE_DEBUG'] module ActiveRecord::TestFixtures::ClassMethods def try_to_load_dependency_with_silence(*args) diff --git a/activerecord/test/cases/reflection_test.rb b/activerecord/test/cases/reflection_test.rb index ad77472333..fed199f6e9 100644 --- a/activerecord/test/cases/reflection_test.rb +++ b/activerecord/test/cases/reflection_test.rb @@ -192,7 +192,7 @@ class ReflectionTest < ActiveRecord::TestCase end def test_reflection_should_not_raise_error_when_compared_to_other_object - assert_nothing_raised { Firm.reflections[:clients] == Object.new } + assert_nothing_raised { Firm.reflections['clients'] == Object.new } end def test_has_many_through_reflection diff --git a/activerecord/test/cases/relation_test.rb b/activerecord/test/cases/relation_test.rb index 15611656fd..fb0b906c07 100644 --- a/activerecord/test/cases/relation_test.rb +++ b/activerecord/test/cases/relation_test.rb @@ -16,6 +16,10 @@ module ActiveRecord def self.connection Post.connection end + + def self.table_name + 'fake_table' + end end def test_construction diff --git a/activerecord/test/cases/schema_dumper_test.rb b/activerecord/test/cases/schema_dumper_test.rb index 575eb34a9c..fd0ef2f89f 100644 --- a/activerecord/test/cases/schema_dumper_test.rb +++ b/activerecord/test/cases/schema_dumper_test.rb @@ -63,7 +63,7 @@ class SchemaDumperTest < ActiveRecord::TestCase next if column_set.empty? lengths = column_set.map do |column| - if match = column.match(/t\.(?:integer|decimal|float|datetime|timestamp|time|date|text|binary|string|boolean)\s+"/) + if match = column.match(/t\.(?:integer|decimal|float|datetime|timestamp|time|date|text|binary|string|boolean|uuid)\s+"/) match[0].length end end diff --git a/activerecord/test/fixtures/uuid_children.yml b/activerecord/test/fixtures/uuid_children.yml new file mode 100644 index 0000000000..a7b15016e2 --- /dev/null +++ b/activerecord/test/fixtures/uuid_children.yml @@ -0,0 +1,3 @@ +sonny: + uuid_parent: daddy + name: Sonny diff --git a/activerecord/test/fixtures/uuid_parents.yml b/activerecord/test/fixtures/uuid_parents.yml new file mode 100644 index 0000000000..0b40225c5c --- /dev/null +++ b/activerecord/test/fixtures/uuid_parents.yml @@ -0,0 +1,2 @@ +daddy: + name: Daddy diff --git a/activerecord/test/models/club.rb b/activerecord/test/models/club.rb index 566e0873f1..a762ad4bb5 100644 --- a/activerecord/test/models/club.rb +++ b/activerecord/test/models/club.rb @@ -6,6 +6,8 @@ class Club < ActiveRecord::Base has_one :sponsored_member, :through => :sponsor, :source => :sponsorable, :source_type => "Member" belongs_to :category + has_many :favourites, -> { where(memberships: { favourite: true }) }, through: :memberships, source: :member + private def private_method diff --git a/activerecord/test/models/tag.rb b/activerecord/test/models/tag.rb index a581b381e8..80d4725f7e 100644 --- a/activerecord/test/models/tag.rb +++ b/activerecord/test/models/tag.rb @@ -3,5 +3,5 @@ class Tag < ActiveRecord::Base has_many :taggables, :through => :taggings has_one :tagging - has_many :tagged_posts, :through => :taggings, :source => :taggable, :source_type => 'Post' -end
\ No newline at end of file + has_many :tagged_posts, :through => :taggings, :source => 'taggable', :source_type => 'Post' +end diff --git a/activerecord/test/models/uuid_child.rb b/activerecord/test/models/uuid_child.rb new file mode 100644 index 0000000000..a3d0962ad6 --- /dev/null +++ b/activerecord/test/models/uuid_child.rb @@ -0,0 +1,3 @@ +class UuidChild < ActiveRecord::Base + belongs_to :uuid_parent +end diff --git a/activerecord/test/models/uuid_parent.rb b/activerecord/test/models/uuid_parent.rb new file mode 100644 index 0000000000..5634f22d0c --- /dev/null +++ b/activerecord/test/models/uuid_parent.rb @@ -0,0 +1,3 @@ +class UuidParent < ActiveRecord::Base + has_many :uuid_children +end diff --git a/activerecord/test/schema/schema.rb b/activerecord/test/schema/schema.rb index d9e1745029..da3074e90f 100644 --- a/activerecord/test/schema/schema.rb +++ b/activerecord/test/schema/schema.rb @@ -17,6 +17,15 @@ ActiveRecord::Schema.define do ActiveRecord::Base.connection.create_table(*args, &block) ActiveRecord::Base.connection.execute "SET GENERATOR #{args.first}_seq TO 10000" end + when "PostgreSQL" + enable_uuid_ossp!(ActiveRecord::Base.connection) + create_table :uuid_parents, id: :uuid, force: true do |t| + t.string :name + end + create_table :uuid_children, id: :uuid, force: true do |t| + t.string :name + t.uuid :uuid_parent_id + end end |