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primary_key=

primary_key=(value)

Instance Public methods

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"

Links:

https://github.com/rails/rails/blob/6f2ed6d85f8087f57f914e4cf6c9ffb65ce24f55/activerecord/lib/active_record/attribute_methods/primary_key.rb#L122

doc_ruby_on_rails

2025-01-10 15:47:30

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