instance method `primary_key=`

Ruby on Rails 3.2.22.5

Since v3.0.20

Available in: v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

primary_key=(value)

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"

Parameters

value req

Source

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 101
        def primary_key=(value)
          @original_primary_key = @primary_key if defined?(@primary_key)
          @primary_key          = value && value.to_s
          @quoted_primary_key   = nil
        end

Defined in activerecord/lib/active_record/attribute_methods/primary_key.rb line 101 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::AttributeMethods::PrimaryKey::ClassMethods

Signature

Parameters