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David Heinemeier Hansson dhh

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View GitHub Profile
View gist:2492118
class ActionDispatch::Routing::Mapper
def draw(routes_name)
instance_eval(File.read(Rails.root.join("config/routes/#{routes_name}.rb")))
end
end
BCX::Application.routes.draw do
draw :api
draw :account
draw :session
View gist:981520
# Bulk API design
#
# resources :posts
class PostsController < ActiveController::Base
# GET /posts/1,4,50,90
# post_url([ @post, @post ])
def show_many
@posts = Post.find(params[:ids])
end
@dhh
dhh / gist:1014971
Created Jun 8, 2011
Use concerns to keep your models manageable
View gist:1014971
# autoload concerns
module YourApp
class Application < Rails::Application
config.autoload_paths += %W(
#{config.root}/app/controllers/concerns
#{config.root}/app/models/concerns
)
end
end
View documents.rb
# config/routes.rb
resources :documents do
scope module: 'documents' do
resources :versions do
post :restore, on: :member
end
resource :lock
end
end
View profanity.rb
# Option A: I'd start with this
class Micropost < ActiveRecord::Base
validate :no_profanity
private
def no_profanity
if user.minor? && profanity = profane_words_used_in_content
errors.add :content, "Profanity: '#{profanity.join(", ")}' not allowed!"
end
end
View config_for.rb
module YourApp
class Application < Rails::Application
# Convenience for loading config/foo.yml for the current Rails env.
#
# Example:
#
# config/cleversafe.yml:
#
# production:
# url: http://127.0.0.1:8080
@dhh
dhh / test_induced_design_damage.rb
Last active May 27, 2019
This is an extraction from Jim Weirich's "Decoupling from Rails" talk, which explained how to apply the hexagonal design pattern to make every layer of your application easily unit testable (without touching the database etc). It only seeks to extract a single method, the EmployeesController#create method, to illustrate the design damage that's …
View test_induced_design_damage.rb
# Original Rails controller and action
class EmployeesController < ApplicationController
def create
@employee = Employee.new(employee_params)
if @employee.save
redirect_to @employee, notice: "Employee #{@employee.name} created"
else
render :new
end
View ticket.rb
class Ticket < ActiveRecord::Base
belongs_to :grouper
belongs_to :user
validate :user_cant_be_blacklisted, on: :confirmation
validate :user_cant_double_book, on: :confirmation
validate :grouper_cant_be_full, on: :confirmation
validate :grouper_cant_have_occurred, on: :confirmation
View aggregator.rb
class Profile < ActiveModel::Aggregator
aggregate :user
aggregate :email
def combine
user.save
user.emails.build(email_attributes).save
end
end
View gist:1285068
Hi David,
I came across your profile online and wanted to reach out about Development
Opportunities here at Groupon. The company is growing, and we're always
looking for folks with solid skills that can make positive contribution to
our continued success. Any chance you'd be open to a quick conversation
about opportunities, or for any possible networking potential? If so, let me
know when you're free and we can set up a time to chat. Also, if you are
interested, it would be great if you could forward a current resume over
that I can take a look at. I look forward to hearing back from you! Please
let me know if you have any questions.
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