Skip to content
This repository
tree: ceb33f8493
Fetching contributors…

Octocat-spinner-32-eaf2f5

Cannot retrieve contributors at this time

file 50 lines (48 sloc) 1.743 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49
module ActiveRecord
  module Integration
    # 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
    # <tt>resources :users</tt> 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"
    def to_param
      # We can't use alias_method here, because method 'id' optimizes itself on the fly.
      id && id.to_s # Be sure to stringify the id for routes
    end

    # 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)
    def cache_key
      case
      when new_record?
        "#{self.class.model_name.cache_key}/new"
      when timestamp = self[:updated_at]
        timestamp = timestamp.utc.to_s(:number)
        "#{self.class.model_name.cache_key}/#{id}-#{timestamp}"
      else
        "#{self.class.model_name.cache_key}/#{id}"
      end
    end
  end
end
Something went wrong with that request. Please try again.