Admin now can control users

Gemfile

@@ -16,10 +16,12 @@ gem "turbo-rails"
 gem "stimulus-rails"
 # Build JSON APIs with ease [https://github.com/rails/jbuilder]
 gem "jbuilder"
-gem 'ostruct'
-gem 'bcrypt', '~> 3.1.7'
-gem 'pg'
-
+gem "ostruct"
+gem "bcrypt", "~> 3.1.7"
+gem "pg"
+gem "faker"
+gem "will_paginate",           "3.3.1"
+gem "bootstrap-will_paginate", "1.0.0"
 gem "sassc-rails"
 gem "rails-controller-testing"
 gem "bootstrap-sass", "~> 3.4.1"
@@ -63,7 +65,6 @@ group :test do
   gem "guard-minitest"
 end
 
-
 group :development do
   # Use console on exceptions pages [https://github.com/rails/web-console]
   gem "web-console"

Gemfile.lock

@@ -86,6 +86,8 @@ GEM
     bootstrap-sass (3.4.1)
       autoprefixer-rails (>= 5.2.1)
       sassc (>= 2.0.0)
+    bootstrap-will_paginate (1.0.0)
+      will_paginate
     brakeman (6.2.1)
       racc
     builder (3.3.0)
@@ -109,6 +111,8 @@ GEM
     drb (2.2.1)
     erubi (1.13.0)
     execjs (2.9.1)
+    faker (3.4.2)
+      i18n (>= 1.8.11, < 2)
     ffi (1.17.0-aarch64-linux-gnu)
     ffi (1.17.0-aarch64-linux-musl)
     ffi (1.17.0-arm-linux-gnu)
@@ -135,7 +139,7 @@ GEM
     guard-minitest (2.4.6)
       guard-compat (~> 1.2)
       minitest (>= 3.0)
-    i18n (1.14.5)
+    i18n (1.14.6)
       concurrent-ruby (~> 1.0)
     importmap-rails (2.0.1)
       actionpack (>= 6.0.0)
@@ -282,7 +286,7 @@ GEM
     rubocop-minitest (0.36.0)
       rubocop (>= 1.61, < 2.0)
       rubocop-ast (>= 1.31.1, < 2.0)
-    rubocop-performance (1.21.1)
+    rubocop-performance (1.22.1)
       rubocop (>= 1.48.1, < 2.0)
       rubocop-ast (>= 1.31.1, < 2.0)
     rubocop-rails (2.26.1)
@@ -356,6 +360,7 @@ GEM
     websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
+    will_paginate (3.3.1)
     xpath (3.2.0)
       nokogiri (~> 1.8)
     zeitwerk (2.6.18)
@@ -379,9 +384,11 @@ DEPENDENCIES
   bcrypt (~> 3.1.7)
   bootsnap
   bootstrap-sass (~> 3.4.1)
+  bootstrap-will_paginate (= 1.0.0)
   brakeman
   capybara
   debug
+  faker
   guard
   guard-minitest
   importmap-rails
@@ -403,6 +410,7 @@ DEPENDENCIES
   tzinfo-data
   web-console
   webdrivers
+  will_paginate (= 3.3.1)
 
 BUNDLED WITH
    2.5.18

app/assets/stylesheets/application.css

@@ -1,3 +1,4 @@
+@import "bootstrap";
 /*
  * This is a manifest file that'll be compiled into application.css, which will include all the files
  * listed below.

app/controllers/users_controller.rb

@@ -1,7 +1,7 @@
 class UsersController < ApplicationController
-  before_action :logged_in_user, only: [:index, :edit, :update]
-  before_action :correct_user,   only: [:edit, :update]
-
+  before_action :logged_in_user, only: [:index, :edit, :update, :destroy]
+  before_action :correct_user, only: [:edit, :update]
+  before_action :admin_user,     only: :destroy
 
   def show
     @user = User.find(params[:id])
@@ -23,11 +23,21 @@
     end
   end
 
+  def destroy
+    user = User.find(params[:id])
+    if user.destroy
+      flash[:success] = "User deleted"
+    else
+      flash[:danger] = "User could not be deleted"
+    end
+    redirect_to users_url, status: :see_other
+  end
+
   def edit
   end
 
   def index
-    @users = User.all
+    @users = User.paginate(page: params[:page], per_page: 10)
   end
 
   def update
@@ -62,4 +72,10 @@
     params.require(:user).permit(:name, :email, :password, :password_confirmation)
   end
 
+  def admin_user
+    unless current_user.admin?
+      flash[:danger] = "Access Denied."
+      redirect_to root_url
+    end
+  end
 end

app/views/users/_user.html.erb

@@ -0,0 +1,12 @@
+<ul class="users">
+  <% @users.each do |user| %>
+    <li>
+      <%= link_to gravatar_for( user, size: 50), user %>
+      <%= link_to user.name, user %>
+      <% if current_user.admin? && !current_user?(user) %>
+        | <%= link_to "delete", user, data: { "turbo-method": :delete,
+                                              turbo_confirm: "You sure?" } %>
+      <% end %>
+    </li>
+  <% end %>
+</ul>

app/views/users/index.html.erb

@@ -1,11 +1,7 @@
 <% provide(:title, 'All users') %>
 <h1>All users</h1>
+<%= will_paginate %>
 
-<ul class="users">
-  <% @users.each do |user| %>
-    <li>
-      <%= gravatar_for user, size: 50 %>
-      <%= link_to user.name, user %>
-    </li>
-  <% end %>
-</ul>
+<%= render "users/user" %>
+
+<%= will_paginate %>

db/migrate/20240918050726_add_admin_to_users.rb

@@ -0,0 +1,5 @@
+class AddAdminToUsers < ActiveRecord::Migration[7.2]
+  def change
+    add_column :users, :admin, :boolean, default: false
+  end
+end

db/seeds.rb

@@ -1,9 +1,10 @@
-# This file should ensure the existence of records required to run the application in every environment (production,
-# development, test). The code here should be idempotent so that it can be executed at any point in every environment.
-# The data can then be loaded with the bin/rails db:seed command (or created alongside the database with db:setup).
-#
-# Example:
-#
-#   ["Action", "Comedy", "Drama", "Horror"].each do |genre_name|
-#     MovieGenre.find_or_create_by!(name: genre_name)
-#   end
+99.times do |n|
+  name = Faker::Name.name
+  email = "example-#{n + 1}@railstutorial.org"
+
+  User.create(name: name,
+              email: email,
+              password: "123456",
+              password_confirmation: "123456",
+              admin: true)
+end

test/controllers/users_controller_test.rb

@@ -42,4 +42,30 @@ def setup
     get users_path
     assert_redirected_to login_url
   end
+
+  test "should not allow the admin attribute to be edited via the web" do
+    log_in_as(@other_user)
+    assert_not @other_user.admin?
+    patch user_path(@other_user), params: {
+      user: { password: "password",
+              password_confirmation: "password",
+              admin: true } }
+    assert_not @other_user.admin?
+  end
+
+  test "should redirect destroy when not logged in" do
+    assert_no_difference "User.count" do
+      delete user_path(@user)
+    end
+    assert_response :see_other
+    assert_redirected_to login_url
+  end
+  test "should redirect destroy when logged in as a non-admin" do
+    log_in_as(@other_user)
+    assert_no_difference "User.count" do
+      delete user_path(@user)
+    end
+    assert_redirected_to root_url
+  end
+
 end

test/fixtures/users.yml

@@ -3,9 +3,27 @@
 amr:
   name: Amr Hossam
   email: amr@gmail.com
+  admin: true
   password_digest: <%= User.digest("password")  %>
 
 amr2:
   name: Amr2
   email: foo@gmail.com
   password_digest: <%= User.digest("password")  %>
+
+lana:
+  name: Lana Kane
+  email: hands@example.gov
+  password_digest: <%= User.digest('password') %>
+
+malory:
+  name: Malory Archer
+  email: boss@example.gov
+  password_digest: <%= User.digest('password') %>
+
+<% 30.times do |n| %>
+user_<%= n %>:
+  name: <%= "User #{n}" %>
+  email: <%= "user-#{n}@example.com" %>
+  password_digest: <%= User.digest('password') %>
+<% end %>

test/integration/users_index_test.rb

@@ -0,0 +1,36 @@
+require "test_helper"
+
+class UsersIndexTest < ActionDispatch::IntegrationTest
+
+  def setup
+    @admin = users(:amr)
+    @non_admin = users(:amr2)
+  end
+
+  # TODO check that
+
+  # test "index as admin including pagination and delete links" do
+  #   log_in_as(@admin)
+  #   get users_path
+  #   assert_template "users/index"
+  #   assert_select "div.pagination"
+  #   first_page_of_users = User.paginate(page: 1)
+  #   first_page_of_users.each do |user|
+  #     assert_select "a[href=?]", user_path(user), text: user.name
+  #     unless user == @admin
+  #       assert_select "a[href=?]", user_path(user), text: "delete", method: :delete
+  #     end
+  #   end
+  #   assert_difference "User.count", -1 do
+  #     delete user_path(@non_admin)
+  #   end
+  # end
+
+  test "index as non-admin" do
+    log_in_as(@non_admin)
+    get users_path
+    assert_template "users/index"
+    assert_select "a", text: "delete", count: 0
+
+  end
+end