1 files changed, 150 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb
new file mode 100644
index 0000000000..a9522e152f
--- /dev/null
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb
@@ -0,0 +1,150 @@
+module ActiveRecord
+  module ConnectionAdapters
+    module PostgreSQL
+      module ColumnMethods
+        def xml(*args)
+          options = args.extract_options!
+          column(args[0], :xml, options)
+        end
+
+        def tsvector(*args)
+          options = args.extract_options!
+          column(args[0], :tsvector, options)
+        end
+
+        def int4range(name, options = {})
+          column(name, :int4range, options)
+        end
+
+        def int8range(name, options = {})
+          column(name, :int8range, options)
+        end
+
+        def tsrange(name, options = {})
+          column(name, :tsrange, options)
+        end
+
+        def tstzrange(name, options = {})
+          column(name, :tstzrange, options)
+        end
+
+        def numrange(name, options = {})
+          column(name, :numrange, options)
+        end
+
+        def daterange(name, options = {})
+          column(name, :daterange, options)
+        end
+
+        def hstore(name, options = {})
+          column(name, :hstore, options)
+        end
+
+        def ltree(name, options = {})
+          column(name, :ltree, options)
+        end
+
+        def inet(name, options = {})
+          column(name, :inet, options)
+        end
+
+        def cidr(name, options = {})
+          column(name, :cidr, options)
+        end
+
+        def macaddr(name, options = {})
+          column(name, :macaddr, options)
+        end
+
+        def uuid(name, options = {})
+          column(name, :uuid, options)
+        end
+
+        def json(name, options = {})
+          column(name, :json, options)
+        end
+
+        def jsonb(name, options = {})
+          column(name, :jsonb, options)
+        end
+
+        def citext(name, options = {})
+          column(name, :citext, options)
+        end
+
+        def point(name, options = {})
+          column(name, :point, options)
+        end
+
+        def bit(name, options)
+          column(name, :bit, options)
+        end
+
+        def bit_varying(name, options)
+          column(name, :bit_varying, options)
+        end
+
+        def money(name, options)
+          column(name, :money, options)
+        end
+      end
+
+      class ColumnDefinition < ActiveRecord::ConnectionAdapters::ColumnDefinition
+        attr_accessor :array
+      end
+
+      class TableDefinition < ActiveRecord::ConnectionAdapters::TableDefinition
+        include ColumnMethods
+
+        # Defines the primary key field.
+        # Use of the native PostgreSQL UUID type is supported, and can be used
+        # by defining your tables as such:
+        #
+        #   create_table :stuffs, id: :uuid do |t|
+        #     t.string :content
+        #     t.timestamps
+        #   end
+        #
+        # By default, this will use the +uuid_generate_v4()+ function from the
+        # +uuid-ossp+ extension, which MUST be enabled on your database. To enable
+        # the +uuid-ossp+ extension, you can use the +enable_extension+ method in your
+        # migrations. To use a UUID primary key without +uuid-ossp+ enabled, you can
+        # set the +:default+ option to +nil+:
+        #
+        #   create_table :stuffs, id: false do |t|
+        #     t.primary_key :id, :uuid, default: nil
+        #     t.uuid :foo_id
+        #     t.timestamps
+        #   end
+        #
+        # You may also pass a different UUID generation function from +uuid-ossp+
+        # or another library.
+        #
+        # Note that setting the UUID primary key default value to +nil+ will
+        # require you to assure that you always provide a UUID value before saving
+        # a record (as primary keys cannot be +nil+). This might be done via the
+        # +SecureRandom.uuid+ method and a +before_save+ callback, for instance.
+        def primary_key(name, type = :primary_key, options = {})
+          options[:default] = options.fetch(:default, 'uuid_generate_v4()') if type == :uuid
+          super
+        end
+
+        def new_column_definition(name, type, options) # :nodoc:
+          column = super
+          column.array = options[:array]
+          column
+        end
+
+        private
+
+          def create_column_definition(name, type)
+            PostgreSQL::ColumnDefinition.new name, type
+          end
+      end
+
+      class Table < ActiveRecord::ConnectionAdapters::Table
+        include ColumnMethods
+      end
+    end
+  end
+end