method

change_column

v3.0.0 - Show latest stable - 0 notes - Class: ActiveRecord::ConnectionAdapters::MysqlAdapter

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What's this?

change_column(table_name, column_name, type, options = {}) public

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# File activerecord/lib/active_record/connection_adapters/mysql_adapter.rb, line 474
      def change_column(table_name, column_name, type, options = {}) #:nodoc:
        column = column_for(table_name, column_name)

        unless options_include_default?(options)
          options[:default] = column.default
        end

        unless options.has_key?(:null)
          options[:null] = column.null
        end

        change_column_sql = "ALTER TABLE #{quote_table_name(table_name)} CHANGE #{quote_column_name(column_name)} #{quote_column_name(column_name)} #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}"
        add_column_options!(change_column_sql, options)
        add_column_position!(change_column_sql, options)
        execute(change_column_sql)
      end

change_column

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