Controller Callbacks

Important: These docs are for the outdated Jets 5 versions and below. For the latest Jets docs: docs.rubyonjets.com

Controller Callbacks are methods that are run “before”, “after” or “around” a controller action.

before_action

class PostsController < ApplicationController
  before_action :set_post, only: [:show, :edit, :update, :delete]

private
  def set_post
    @post = Post.find(params[:id])
  end
end

after_action

class PostsController < ApplicationController
  after_action :format_post, only: [:show]

private
  def format_post
    @post.title.upcase
  end
end

around_action

class PostsController < ApplicationController
  around_action :benchmark

private
  def benchmark
    t1 = Time.now
    yield
    seconds = Time.now - t1
    puts "Action took #{seconds}s"
  end
end

skip_before_action

class ApplicationController < Jets::Controller::Base
  before_action :authenticate_user_session

  # ...


class PublicDocumentsController < ApplicationController
  # skip the authenticate_user_session for all the methods in the controller
  skip_before_action :authenticate_user_session

  # ...

class PostsController < ApplicationController
  # skip the authenticate_user_session only for the index method in the controller
  skip_before_action :authenticate_user_session, only: [:index]


Supported Callbacks

These callbacks are supported:

after_action
append_after_action
append_around_action
append_before_action
around_action
before_action
prepend_after_action
prepend_around_action
prepend_before_action
skip_after_action
skip_around_action
skip_before_action

Jets Controller Callbacks are based on Rails Controller Callbacks. So the Rails docs are are useful: