instance method `change_column`

Ruby on Rails 3.1.12

Since v2.2.3 Last seen in v3.2.22.5

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5

Compare with:

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

Changes the column of a table.

Parameters

table_name req
column_name req
type req
options opt = {}

Source

# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 967
      def change_column(table_name, column_name, type, options = {})
        clear_cache!
        quoted_table_name = quote_table_name(table_name)

        execute "ALTER TABLE #{quoted_table_name} ALTER COLUMN #{quote_column_name(column_name)} TYPE #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}"

        change_column_default(table_name, column_name, options[:default]) if options_include_default?(options)
        change_column_null(table_name, column_name, options[:null], options[:default]) if options.key?(:null)
      end

Defined in activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb line 967 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::PostgreSQLAdapter

Signature

Parameters