instance method `change_column_null`

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_null(table_name, column_name, null, default = nil)

No documentation comment.

Parameters

table_name req
column_name req
null req
default opt = nil

Source

# File activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 503
      def change_column_null(table_name, column_name, null, default = nil)
        column = column_for(table_name, column_name)

        unless null || default.nil?
          execute("UPDATE #{quote_table_name(table_name)} SET #{quote_column_name(column_name)}=#{quote(default)} WHERE #{quote_column_name(column_name)} IS NULL")
        end

        change_column table_name, column_name, column.sql_type, :null => null
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb line 503 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter

Signature

Parameters