-

controller.rb
class PostsController < ApplicationController
  def index
    @published_posts = Post.published
    @unpublished_posts = Post.unpublished
  end

  def create
    @post = Post.new params[:post]
    if @post.save
      redirect_to @post
    else
      render :new
    end
  end
end
model.rb
### Use modules ###
#
class User
  include Githubable
end

module Githubable
  def github_feed
    # API call to get the user's github feed
  end
  def github_profile
    # API call to get the user's github profile
  end
  def github_repos
    # API call to get the user's github repos
  end
end


### OR with delegation ###


class User
  has_one :address
  delegate :street, :zip, :number, to: :address, prefix: :shipping
end

class Address
  def street
  end

  def number
  end

  def zip
  end
end

@user.shipping_street -> @user.address.street
@user.shipping_number -> @user.address.number
post.rb
class Post < ActiveRecord::Base
  attr_accessor :published_date

  before(:save) { self.title.downcase! }

  scope :published, -> { where(published: true) }

  def self.published
    where(published: true)
  end

  def self.unpublished
    where(published: false)
  end

  def make_legible thing
    self.send(thing).gsub('-', ' ')
  end

  def show_date_for_jenny
    self.published_date.strftime("at %I:%M%p for Jenny")
  end
end
view.html.erb
<h1><%= post.title %></h1>
<p><%= post.body %></p>

<ul>
  <h1>published posts</h1>
  <%= @published_posts.each do |post| %>
    <li><%= post.title  %></li>
  <% end %>
</ul>
<ul>
  <h1>unpublished posts</h1>
  <%= @unpublished_posts.each do |post| %>
    <li><%= post.title  %></li>
  <% end %>
</ul>
view_helper.rb
module ViewHelper
  def happy_title str
    str.gsub('-', ' ')
  end
end


# <% @posts.each do |post| %>
#   <%= @post.title.gsub('-', ' ') %>
#   <%= happy_title post.title %>
# <% end %>