instance method `primary_key`

Ruby on Rails 2.3.18

Since v2.3.18 Last seen in v3.2.22.5

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

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primary_key(table)

Returns just a table’s primary key

Parameters

table req

Source

# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 796
      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/postgresql_adapter.rb line 796 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::PostgreSQLAdapter

Signature

Parameters