Update all associations of a Rails model

  @msg_thread.messages.update_all(status: 'read')

Ember.js gotcha - require handlebar.js

Require handlebar.js BEFORE ember.js

# in rails
//= require handlebars
//= require ember

Scope javascript variable in coffeescript so it's available in browser

App = Foo.bar

window.App = App

Rails scaffold only the controller resource

rails g scaffold_controller users

Customizing devise views & controllers

I find myself repeating and googling this far too many times...

# Generate the devise views
rails g devise:views

# Add customize views resource to route
devise_for :users, controllers: { registrations: "users/registrations" }

# Move views to new resource folder
git mv app/views/devise/registrations/ app/views/users/

# Add new custom devise controller
class Users::RegistrationsController < Devise::SessionsController

  def new
    @user = User.new
  end

  def create
    ...
  end

end

Cannot customize default devise views

DO NOT use Devise to generate scoped views.

rails generate devise:views users

Just use

rails generate devise:views

Easy way to stage deleted files with git rm

git rm -u