instance method `change_column_sql`

Ruby on Rails 4.0.13

Since v3.2.22.5 Last seen in v4.2.9

Available in: v3.2.22.5 v4.0.13 v4.1.16 v4.2.9

Compare with:

change_column_sql(table_name, column_name, type, options = {})

No documentation comment.

Parameters

table_name req
column_name req
type req
options opt = {}

Source

# File activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 672
      def change_column_sql(table_name, column_name, type, options = {})
        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 = "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)
        change_column_sql
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb line 672 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter

Signature

Parameters