instance method `primary_key`

Ruby on Rails 3.2.22.5

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:

primary_key(table)

Returns just a table’s primary key

Parameters

table req

Source

# File activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 540
      def primary_key(table)
        pk_and_sequence = pk_and_sequence_for(table)
        pk_and_sequence && pk_and_sequence.first
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb line 540 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter

Signature

Parameters