Record and show the last time users have logged in

app/controllers/login_controller.rb

@@ -14,6 +14,7 @@ class LoginController < ApplicationController
     case request.method
     when 'POST'
       if @user = User.authenticate(params['user_login'], params['user_password'])
+        @user.update_attribute(:last_login_at, Time.now)
         return handle_post_success
       else
         handle_post_failure

app/views/users/index.html.erb

@@ -14,6 +14,7 @@
     <th><%= t('users.total_projects') %></th>
     <th><%= t('users.total_notes') %></th>
     <th><%= User.human_attribute_name('created_at') %></th>
+    <th><%= User.human_attribute_name('last_login_at') %></th>
     <th>&nbsp;</th>
   </tr>
   <% for user in @users %>
@@ -28,6 +29,7 @@
       <td><%= h user.projects.size %></td>
       <td><%= h user.notes.size %></td>
       <td><%= format_date(user.created_at) %></td>
+      <td><%= format_date(user.last_login_at) %></td>
       <td><%= !user.is_admin? ? remote_delete_user(user) : "&nbsp;".html_safe %></td>
     </tr>
   <% end %>

db/migrate/20200810123316_add_lastlogin_to_user.rb

@@ -0,0 +1,5 @@
+class AddLastloginToUser < ActiveRecord::Migration[5.2]
+  def change
+    add_column :users, :last_login_at, :datetime
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_08_07_175610) do
+ActiveRecord::Schema.define(version: 2020_08_10_123316) do
 
   create_table "attachments", options: "ENGINE=InnoDB DEFAULT CHARSET=utf8", force: :cascade do |t|
     t.integer "todo_id"
@@ -223,6 +223,7 @@ ActiveRecord::Schema.define(version: 2020_08_07_175610) do
     t.string "email"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.datetime "last_login_at"
     t.index ["login"], name: "index_users_on_login"
   end