module SchemaDumpingHelper def dump_table_schema(table, connection = ActiveRecord::Base.connection) old_ignore_tables = ActiveRecord::SchemaDumper.ignore_tables ActiveRecord::SchemaDumper.ignore_tables = connection.data_sources - [table] stream = StringIO.new ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, stream) stream.string ensure ActiveRecord::SchemaDumper.ignore_tables = old_ignore_tables end def dump_all_table_schema(ignore_tables) old_ignore_tables, ActiveRecord::SchemaDumper.ignore_tables = ActiveRecord::SchemaDumper.ignore_tables, ignore_tables stream = StringIO.new ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, stream) stream.string ensure ActiveRecord::SchemaDumper.ignore_tables = old_ignore_tables end end