add admin flag on users and admin panel

rails/app/controllers/admin_controller.rb

@@ -0,0 +1,16 @@
+class AdminController < ApplicationController
+  before_action :verify_admin
+
+  def index
+    # Add any data you want to display on the admin page
+    @users = User.all
+  end
+
+  private
+
+  def verify_admin
+    unless current_user&.admin?
+      redirect_to root_path, alert: "You are not authorized to view this page."
+    end
+  end
+end

rails/app/helpers/admin_helper.rb

@@ -0,0 +1,2 @@
+module AdminHelper
+end

rails/app/views/admin/index.html.erb

@@ -0,0 +1,20 @@
+<h2> Admin </h2>
+<h3> Users </h3>
+<table>
+  <thead>
+    <tr>
+      <th>Name</th>
+      <th>Email</th>
+      <th>Admin</th>
+    </tr>
+  </thead>
+  <tbody>
+    <% @users.each do |user| %>
+      <tr>
+        <td><%= user.name %></td>
+        <td><%= user.email %></td>
+        <td><%= user.admin %></td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>

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

@@ -27,7 +27,10 @@
         <div class="text-sm lg:flex-grow">
           <a href="/collection_types" class="block mt-4 lg:inline-block lg:mt-0 text-teal-200 hover:text-white mr-4">Categories</a>
           <a href="/collections" class="block mt-4 lg:inline-block lg:mt-0 text-teal-200 hover:text-white mr-4">Collections</a>
-          <a href="/collection_items" class="block mt-4 lg:inline-block lg:mt-0 text-teal-200 hover:text-white">Items</a>
+          <a href="/collection_items" class="block mt-4 lg:inline-block lg:mt-0 text-teal-200 mr-4 hover:text-white">Items</a>
+          <% if current_user&.admin? %>
+            <a href="/admin" class="block mt-4 lg:inline-block lg:mt-0 text-teal-200 hover:text-white mr-4">Admin</a>
+          <% end %>
         </div>
       </div>
       <div>

rails/config/routes.rb

@@ -12,6 +12,7 @@
   post '/collections/:id/bulk_create_items', to: 'collections#process_bulk_create_items', as: 'process_bulk_create_items'
   get '/collection_items/:id/collect', to: 'collection_items#collect'
   get '/collection_items/:id/uncollect', to: 'collection_items#uncollect'
+  get '/admin', to: 'admin#index'
   # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
 
   # Defines the root path route ("/")

rails/db/migrate/20240518205757_add_admin_to_users.rb

@@ -0,0 +1,5 @@
+class AddAdminToUsers < ActiveRecord::Migration[7.0]
+  def change
+    add_column :users, :admin, :boolean, default: false
+  end
+end

rails/lib/tasks/user.rake

@@ -0,0 +1,13 @@
+namespace :user do
+  desc "Set a user as admin"
+  task :set_admin, [:email] => :environment do |t, args|
+    # rake user:set_admin\['[email protected]'\]
+    user = User.find_by(email: args.email)
+    if user
+      user.update(admin: true)
+      puts "User #{args.email} is now an admin."
+    else
+      puts "No user found with the email #{args.email}."
+    end
+  end
+end

rails/test/controllers/admin_controller_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class AdminControllerTest < ActionDispatch::IntegrationTest
+  # test "the truth" do
+  #   assert true
+  # end
+end