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method

primary_key

rails latest stable - Class: ActiveRecord::ConnectionAdapters::SQLite3Adapter

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v4.2.9) is shown here.

primary_key(table_name)
public

No documentation available.

# File activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb, line 416
      def primary_key(table_name) #:nodoc:
        pks = table_structure(table_name).select { |f| f['pk'] > 0 }
        return nil unless pks.count == 1
        pks[0]['name']
      end