本期视频由李宗晟同学为大家倾情奉献，大家可以通过他的邮箱 lizongshenglzs@gmail.com 联系到他。谢谢宗晟的辛勤劳动！
$rails new airbnb
$cd airbnb
$rails g scaffold House location:string price:integer
$rake db:create db:migrate
gem 'devise'
$rails g devise:install
config.action_mailer.default_url_options = { host: 'localhost:3000' } into
<p class="notice"><%= notice %></p>
<p class="alert"><%= alert %></p>
$rails generate devise User
rake db:migrate
before_action :authenticate_user!
<% if user_signed_in? %>
Logged in as <strong><%= current_user.email %></strong>.
<%= link_to 'Edit profile', edit_user_registration_path %> |
<%= link_to "Logout", destroy_user_session_path, method: :delete %>
<% else %>
<%= link_to "Sign up", new_user_registration_path %> |
<%= link_to "Login", new_user_session_path %>
<% end %>
config.action_mailer.perform_deliveries = true
config.action_mailer.raise_delivery_errors = true
config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
address: 'smtp.gmail.com',
port: 587,
domain: 'chuochuo.me',
user_name: 'email@gmail.com',
password: 'password',
authentication: 'plain',
enable_starttls_auto: true }