Why ApplicationRecord

[fugee ohu]

Why create an ApplicationRecord class inheriting from ActiveRecord::Base and then have all models  inherit from ApplicationRecord instead of ActiveRecord::Base ?

[Aboobacker M K]

You can find rationale from original PR which introduced this feature https://github.com/rails/rails/pull/22567

On Fri, Mar 9, 2018 at 8:28 PM, fugee ohu <fuge...@gmail.com> wrote:

Why create an ApplicationRecord class inheriting from ActiveRecord::Base and then have all models  inherit from ApplicationRecord instead of ActiveRecord::Base ?

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[Robert Phillips]

On Friday, 9 March 2018 14:58:23 UTC, fugee ohu wrote:

>Why create an ApplicationRecord class inheriting from ActiveRecord::Base and then have all models  inherit from ApplicationRecord instead of ActiveRecord::Base ?

I know a guy that doesn't use rails generate controller or rails generate model..  So when he makes a controller he just handcodes it.

For him I suppose it'd be an advantage, as 

It is easier to write 

class Abc < ApplicationController

end

than to write

class Abc < ActionController::Base

  protect_from_forgery with: :exception

end

[Robert Phillips]

class Abc should say class AbcController 

[Walter Lee Davis]

It's meant to be a way to gather common features into one place. If all your routes are meant to have CanCanCan protecting them from unauthorized access, then you may see this in the ApplicationController:

unless: :devise_controller?
before_action :authenticate_user!
load_and_authorize_resource
end

Which means that you won't forget to add that to your controllers and leave something important exposed to the public. There's lots of other useful stuff you can wedge in the ApplicationController that you need in all controllers, and thus only have to write once. Inheritance can be useful!

Walter

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