Listing users
| Name |
|---|
New User
Pragmatic Bookshelf
14.2 Iteration I2: Authenticating Users 13.3 Playtime
Scaffold the user model
rails generate scaffold User name:string password_digest:string
invoke active_record
create db/migrate/20111029072029_create_users.rb
create app/models/user.rb
invoke test_unit
create test/unit/user_test.rb
create test/fixtures/users.yml
route resources :users
invoke scaffold_controller
create app/controllers/users_controller.rb
invoke erb
create app/views/users
create app/views/users/index.html.erb
create app/views/users/edit.html.erb
create app/views/users/show.html.erb
create app/views/users/new.html.erb
create app/views/users/_form.html.erb
invoke test_unit
create test/functional/users_controller_test.rb
invoke helper
create app/helpers/users_helper.rb
invoke test_unit
create test/unit/helpers/users_helper_test.rb
invoke assets
invoke coffee
create app/assets/javascripts/users.js.coffee
invoke scss
create app/assets/stylesheets/users.css.scss
invoke scss
identical app/assets/stylesheets/scaffolds.css.scss
uncomment out bcrypt-ruby
edit Gemfile
# source 'http://rubygems.org'
gem 'rails', :path => "/home/rubys/git/rails" # '3.2.0.beta'
gem "journey", :path => "/home/rubys/git/journey"
# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'
gem 'sqlite3'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', :path => "/home/rubys/git/sass-rails" # 'git://github.com/rails/sass-rails.git'
gem 'coffee-rails', :path => "/home/rubys/git/coffee-rails" # 'git://github.com/rails/coffee-rails.git'
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails'
# To use ActiveModel has_secure_password
gem 'bcrypt-ruby', '~> 3.0.0'
# Use unicorn as the web server
# gem 'unicorn'
# Deploy with Capistrano
# gem 'capistrano'
# To use debugger
# gem 'ruby-debug19', :require => 'ruby-debug'
gem 'will_paginate', '~> 3.0'
Run the migration
rake db:migrate
mv 20111029072029_create_users.rb 20110711000009_create_users.rb
== CreateUsers: migrating ====================================================
-- create_table(:users)
-> 0.0239s
== CreateUsers: migrated (0.0240s) ===========================================
Add validation, has_secure_password
edit app/models/user.rb
class User < ActiveRecord::Base
validates :name, presence: true, uniqueness: true
has_secure_password
end
Avoid redirect after create, update operations
edit app/controllers/users_controller.rb
def create
@user = User.new(params[:user])
respond_to do |format|
if @user.save
format.html { redirect_to users_url,
notice: "User #{@user.name} was successfully created." }
format.json { render json: @user,
status: :created, location: @user }
else
format.html { render action: "new" }
format.json { render json: @user.errors,
status: :unprocessable_entity }
end
end
end
edit app/controllers/users_controller.rb
def update
@user = User.find(params[:id])
respond_to do |format|
if @user.update_attributes(params[:user])
format.html { redirect_to users_url,
notice: "User #{@user.name} was successfully updated." }
format.json { head :no_content }
else
format.html { render action: "edit" }
format.json { render json: @user.errors,
status: :unprocessable_entity }
end
end
end
Display users sorted by name
edit app/controllers/users_controller.rb
def index
@users = User.order(:name)
respond_to do |format|
format.html # index.html.erb
format.json { render json: @users }
end
end
Add Notice, and remove password digest from view
edit app/views/users/index.html.erb
<h1>Listing users</h1>
<% if notice %>
<p id="notice"><%= notice %></p>
<% end %>
<table>
<tr>
<th>Name</th>
<th></th>
<th></th>
<th></th>
</tr>
<% @users.each do |user| %>
<tr>
<td><%= user.name %></td>
<td><%= link_to 'Show', user %></td>
<td><%= link_to 'Edit', edit_user_path(user) %></td>
<td><%= link_to 'Destroy', user, confirm: 'Are you sure?',
method: :delete %></td>
</tr>
<% end %>
</table>
<br />
<%= link_to 'New User', new_user_path %>
Update form used to both create and update users
edit app/views/users/_form.html.erb
<div class="depot_form">
<%= form_for @user do |f| %>
<% if @user.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@user.errors.count, "error") %>
prohibited this user from being saved:</h2>
<ul>
<% @user.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<fieldset>
<legend>Enter User Details</legend>
<div>
<%= f.label :name %>:
<%= f.text_field :name, size: 40 %>
</div>
<div>
<%= f.label :password, 'Password' %>:
<%= f.password_field :password, size: 40 %>
</div>
<div>
<%= f.label :password_confirmation, 'Confirm' %>:
<%= f.password_field :password_confirmation, size: 40 %>
</div>
<div>
<%= f.submit %>
</div>
</fieldset>
<% end %>
</div>
Demonstrate creating a new user
get /users
get /users/new
post /users
get http://localhost:3000/users
Pragmatic Bookshelf
Show how this is stored in the database
sqlite3> select * from users
id = 1
name = dave
password_digest = $2a$10$nqouCRPPZbi/0y2RXJD2F.gaNuJ74Jdr2yYBL7KVDfnkRjvmLTIaa
created_at = 2011-10-29 07:20:47.863311
updated_at = 2011-10-29 07:20:47.863311
edit test/functional/users_controller_test.rb
require 'test_helper'
class UsersControllerTest < ActionController::TestCase
setup do
@input_attributes = {
name: "sam",
password: "private",
password_confirmation: "private"
}
@user = users(:one)
end
#...
test "should create user" do
assert_difference('User.count') do
post :create, user: @input_attributes
end
assert_redirected_to users_path
end
#...
test "should update user" do
put :update, id: @user, user: @input_attributes
assert_redirected_to users_path
end
end