instance method `to_param`

Ruby on Rails 8.1.2

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:

to_param()

Returns a string representing the object’s key suitable for use in URLs, or nil if persisted? is false.

class Person
  include ActiveModel::Conversion
  attr_accessor :id

  def initialize(id)
    @id = id
  end

  def persisted?
    true
  end
end

person = Person.new(1)
person.to_param # => "1"

Source

# File activemodel/lib/active_model/conversion.rb, line 90
    def to_param
      (persisted? && (key = to_key) && key.all?) ? key.join(self.class.param_delimiter) : nil
    end

Defined in activemodel/lib/active_model/conversion.rb line 90 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveModel::Conversion

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