From 65bf1c60053e727835e06392d27a2fb49665484c Mon Sep 17 00:00:00 2001 From: Ryuta Kamizono Date: Tue, 15 Dec 2015 05:26:14 +0900 Subject: Virtual/generated column support for MySQL 5.7.5+ and MariaDB 5.2.0+ MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit MySQL generated columns: https://dev.mysql.com/doc/refman/5.7/en/create-table-generated-columns.html MariaDB virtual columns: https://mariadb.com/kb/en/mariadb/virtual-computed-columns/ Declare virtual columns with `t.virtual name, type: …, as: "expression"`. Pass `stored: true` to persist the generated value (false by default). Example: create_table :generated_columns do |t| t.string :name t.virtual :upper_name, type: :string, as: "UPPER(name)" t.virtual :name_length, type: :integer, as: "LENGTH(name)", stored: true t.index :name_length # May be indexed, too! end Closes #22589 --- .../connection_adapters/abstract/schema_dumper.rb | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb') diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb index b912d24626..d6c912a69e 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb @@ -7,7 +7,7 @@ module ActiveRecord # Adapter level by over-writing this code inside the database specific adapters module ColumnDumper def column_spec(column) - [schema_type(column), prepare_column_options(column)] + [schema_type_with_virtual(column), prepare_column_options(column)] end def column_spec_for_primary_key(column) @@ -59,6 +59,14 @@ module ActiveRecord schema_type(column) == :bigint end + def schema_type_with_virtual(column) + if supports_virtual_columns? && column.virtual? + :virtual + else + schema_type(column) + end + end + def schema_type(column) if column.bigint? :bigint -- cgit v1.2.3