instance method `to_key`

Ruby on Rails 3.1.12

Since v3.0.20

Compare with:

to_key()

Returns an Enumerable of all key attributes if any is set, regardless if the object is persisted or not.

Note the default implementation uses persisted? just because all objects in Ruby 1.8.x responds to :id.

Source

# File activemodel/lib/active_model/conversion.rb, line 39
    def to_key
      persisted? ? [id] : nil
    end

Defined in activemodel/lib/active_model/conversion.rb line 39 · View on GitHub · Improve this page · Find usages on GitHub

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