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method

rename_column_sql

rails latest stable - Class: ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v4.2.9) is shown here.

rename_column_sql(table_name, column_name, new_column_name)
protected

No documentation available.

# File activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 805
      def rename_column_sql(table_name, column_name, new_column_name)
        column  = column_for(table_name, column_name)
        options = {
          name: new_column_name,
          default: column.default,
          null: column.null,
          auto_increment: column.extra == "auto_increment"
        }

        current_type = select_one("SHOW COLUMNS FROM #{quote_table_name(table_name)} LIKE '#{column_name}'", 'SCHEMA')["Type"]
        schema_creation.accept ChangeColumnDefinition.new column, current_type, options
      end