method

rename_column_sql

v4.0.2 - Show latest stable - 0 notes - Class: AbstractMysqlAdapter

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rename_column_sql(table_name, column_name, new_column_name) protected

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# File activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 689
      def rename_column_sql(table_name, column_name, new_column_name)
        options = {}

        if column = columns(table_name).find { |c| c.name == column_name.to_s }
          options[:default] = column.default
          options[:null] = column.null
          options[:auto_increment] = (column.extra == "auto_increment")
        else
          raise ActiveRecordError, "No such column: #{table_name}.#{column_name}"
        end

        current_type = select_one("SHOW COLUMNS FROM #{quote_table_name(table_name)} LIKE '#{column_name}'", 'SCHEMA')["Type"]
        rename_column_sql = "CHANGE #{quote_column_name(column_name)} #{quote_column_name(new_column_name)} #{current_type}"
        add_column_options!(rename_column_sql, options)
        rename_column_sql
      end

rename_column_sql

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