Module ActiveRecord::Integration
In: lib/active_record/integration.rb

Methods

Public Instance methods

Returns a cache key that can be used to identify this record.

Examples

  Product.new.cache_key     # => "products/new"
  Product.find(5).cache_key # => "products/5" (updated_at not available)
  Person.find(5).cache_key  # => "people/5-20071224150000" (updated_at available)

Returns a String, which Action Pack uses for constructing an URL to this object. The default implementation returns this record‘s id as a String, or nil if this record‘s unsaved.

For example, suppose that you have a User model, and that you have a resources :users route. Normally, user_path will construct a path with the user object‘s ‘id’ in it:

  user = User.find_by_name('Phusion')
  user_path(user)  # => "/users/1"

You can override to_param in your model to make user_path construct a path using the user‘s name instead of the user‘s id:

  class User < ActiveRecord::Base
    def to_param  # overridden
      name
    end
  end

  user = User.find_by_name('Phusion')
  user_path(user)  # => "/users/Phusion"

[Validate]