method

primary_key=

rails latest stable - Class: ActiveRecord::AttributeMethods::PrimaryKey::ClassMethods

primary_key=(value)

public

Sets the name of the primary key column.

class Project < ActiveRecord::Base
  self.primary_key = 'sysid'
end

You can also define the #primary_key method yourself:

class Project < ActiveRecord::Base
  def self.primary_key
    'foo_' + super
  end
end

Project.primary_key # => "foo_id"

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 165
          def primary_key=(value)
            @primary_key        = derive_primary_key(value)
            @quoted_primary_key = nil
            @attributes_builder = nil
          end

primary_key=

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