Section 7.4.4: Add the ability to create users through the admin backend

Author: Ryan Bigg

ticketee/app/controllers/admin/base_controller.rb

@@ -1,3 +1,6 @@
 class Admin::BaseController < ApplicationController
   before_action :authorize_admin!
+
+  def index
+  end
 end

ticketee/app/controllers/admin/users_controller.rb

@@ -1,4 +1,31 @@
 class Admin::UsersController < Admin::BaseController
   def index
+    @users = User.order(:email)
   end
+
+  def new
+    @user = User.new
+  end
+
+  def create
+    params = user_params.dup
+    user_params[:password_confirmation] = user_params[:password]
+    @user = User.new(params)
+
+    if @user.save
+      flash[:notice] = "User has been created."
+      redirect_to admin_users_path
+    else
+      flash.now[:alert] = "User has not been created."
+      render :action => "new"
+    end
+  end
+
+  private
+    def user_params
+      params.require(:user).permit(:name,
+                                   :email,
+                                   :password,
+                                   :password_confirmation)
+    end
 end

ticketee/app/views/admin/base/index.html.erb

@@ -0,0 +1,2 @@
+<%= link_to "Users", admin_users_path %>
+Welcome to Ticketee's Admin Lounge. Please enjoy your stay.

ticketee/app/views/admin/users/_form.html.erb

@@ -0,0 +1,18 @@
+<%= simple_form_for [:admin, @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 %>
+
+  <%= f.input :email %>
+  <%= f.input :password %>
+  
+  <%= f.button :submit %>
+<% end %>

ticketee/app/views/admin/users/index.html.erb

@@ -1,2 +1,6 @@
-<h1>Admin::Users#index</h1>
-<p>Find me in app/views/admin/users/index.html.erb</p>
+<%= link_to "New User", new_admin_user_path, class: "new" %>
+<ul>
+  <% @users.each do |user| %>
+    <li><%= link_to user.email, [:admin, user] %></li>
+  <% end %>
+</ul>

ticketee/app/views/admin/users/new.html.erb

@@ -0,0 +1,3 @@
+<h2>New User</h2>
+
+<%= render "form" %>

ticketee/app/views/layouts/application.html.erb

@@ -32,6 +32,9 @@
               <%= link_to "Sign in", new_user_session_path %>
             </li>
           <% end %>
+          <% admins_only do %>
+            <li><%= link_to "Admin", admin_root_path %></li>
+          <% end %>
         </ul>
 
         <% if user_signed_in? %>

ticketee/config/routes.rb

@@ -1,5 +1,11 @@
 Rails.application.routes.draw do
   devise_for :users
+
+  namespace :admin do
+    root "base#index"
+    resources :users
+  end
+
   root 'projects#index'
 
   resources :projects do

ticketee/spec/features/admin/creating_users_spec.rb

@@ -0,0 +1,20 @@
+require "rails_helper"
+
+feature "Creating Users" do
+  let!(:admin) { FactoryGirl.create(:admin_user) }
+
+  before do
+    login_as(admin)
+    visit "/"
+    click_link "Admin"
+    click_link "Users"
+    click_link "New User"
+  end
+
+  scenario 'Creating a new user' do
+    fill_in "Email", with: "[email protected]"
+    fill_in "Password", with: "password"
+    click_button "Create User"
+    expect(page).to have_content("User has been created.")
+  end
+end