ericcf

$ rails _4.2.6_ new sti_object_label
...
$ cd sti_object_label
$ echo "gem 'rails_admin', '~> 0.8.1'" >> Gemfile
$ bundle
...
$ rails _4.2.6_ g rails_admin:install
...
<enter>
...

ericcf

$ rails -v
Rails 4.2.6
$ rails new nested_update
...
$ cd nested_update
$ echo "gem 'rails_admin', '~> 0.8.1'" >> Gemfile
$ bundle
...
$ rails g rails_admin:install
...

ericcf

# in host app

class Activity
  def action
    status_label.downcase
  end
end

ericcf

$('#products').append('<%= j render(@products) %>');
<% if @products.next_page %>
  $('.pagination').replaceWith('<%= j will_paginate(@products) %>');
<% else %>
  $('.pagination').remove();
<% end %>

ericcf

class Ingredient < ActiveResource::Base

  def recipes
    # returns all recipes with this ingredient as a component
    Recipe.joins(components).merge(components)
  end

  def components
    Component.where :ingredient_id => id
  end

ericcf

class Ingredient < ActiveRecord::Base

  def as_json(options = {})
    super(options.merge(
      :only => [:id, :name],
      :methods => [:time_to_harvest],
      :include => {
        :substitutes => { :only => [:name] }
      }
    ))

ericcf

# instead of { "my_model": { "id": 1, "title": "foo" } }
# to_json produces { "id": 1, "title": "foo" }
ActiveRecord::Base.include_root_in_json = false

ericcf

[
  {
    "id" => 1,
    "name" => "sassafras"
  }
]

ericcf

require 'fakeweb'

# this can also be set to a regular expression to whitelist URI's
FakeWeb.allow_net_connect = false

def load_fixture(name)
  path = "#{Rails.root}/features/fixtures/#{name}.rb"
  eval File.open(path).map { |line| line }.join("")
end

ericcf

class IngredientsSweeper < ActionController::Caching::Sweeper

  observe Ingredient

  def after_save(record)
    expire_action :controller => "ingredients",
                  :action => "index",
                  :format => :json
    expire_action :controller => "ingredients",
                  :action => "show",