add administrate

Gemfile

@@ -15,12 +15,14 @@ gem "webpacker", "~> 5.0"
 
 gem "bootsnap", ">= 1.4.4", require: false
 
+gem "administrate"
+
 gem "devise"
 gem "devise-bootstrap-views", "~> 1.0"
 gem "devise-i18n"
 
 group :development, :test do
-  gem "byebug", platforms: [:mri, :mingw, :x64_mingw]
+  gem "pry-byebug", platforms: [:mri, :mingw, :x64_mingw]
   gem "capybara"
   gem "rspec-rails"
 

Gemfile.lock

@@ -62,6 +62,16 @@ GEM
       zeitwerk (~> 2.3)
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
+    administrate (0.16.0)
+      actionpack (>= 5.0)
+      actionview (>= 5.0)
+      activerecord (>= 5.0)
+      datetime_picker_rails (~> 0.0.7)
+      jquery-rails (>= 4.0)
+      kaminari (>= 1.0)
+      momentjs-rails (~> 2.8)
+      sassc-rails (~> 2.1)
+      selectize-rails (~> 0.6)
     ast (2.4.2)
     bcrypt (3.1.16)
     bindex (0.8.1)
@@ -77,8 +87,11 @@ GEM
       rack-test (>= 0.6.3)
       regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
+    coderay (1.1.3)
     concurrent-ruby (1.1.9)
     crass (1.0.6)
+    datetime_picker_rails (0.0.7)
+      momentjs-rails (>= 2.8.1)
     devise (4.8.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
@@ -97,6 +110,22 @@ GEM
       concurrent-ruby (~> 1.0)
     jbuilder (2.11.2)
       activesupport (>= 5.0.0)
+    jquery-rails (4.4.0)
+      rails-dom-testing (>= 1, < 3)
+      railties (>= 4.2.0)
+      thor (>= 0.14, < 2.0)
+    kaminari (1.2.1)
+      activesupport (>= 4.1.0)
+      kaminari-actionview (= 1.2.1)
+      kaminari-activerecord (= 1.2.1)
+      kaminari-core (= 1.2.1)
+    kaminari-actionview (1.2.1)
+      actionview
+      kaminari-core (= 1.2.1)
+    kaminari-activerecord (1.2.1)
+      activerecord
+      kaminari-core (= 1.2.1)
+    kaminari-core (1.2.1)
     listen (3.6.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
@@ -110,6 +139,8 @@ GEM
     mini_mime (1.1.0)
     mini_portile2 (2.6.1)
     minitest (5.14.4)
+    momentjs-rails (2.20.1)
+      railties (>= 3.1)
     msgpack (1.4.2)
     nio4r (2.5.8)
     nokogiri (1.12.1)
@@ -120,6 +151,12 @@ GEM
     parser (3.0.2.0)
       ast (~> 2.4.1)
     pg (1.2.3)
+    pry (0.13.1)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-byebug (3.9.0)
+      byebug (~> 11.0)
+      pry (~> 0.13.0)
     public_suffix (4.0.6)
     puma (5.4.0)
       nio4r (~> 2.0)
@@ -215,6 +252,7 @@ GEM
       sprockets (> 3.0)
       sprockets-rails
       tilt
+    selectize-rails (0.12.6)
     semantic_range (3.0.0)
     spring (2.1.1)
     sprockets (4.0.2)
@@ -255,8 +293,8 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  administrate
   bootsnap (>= 1.4.4)
-  byebug
   capybara
   devise
   devise-bootstrap-views (~> 1.0)
@@ -264,6 +302,7 @@ DEPENDENCIES
   jbuilder (~> 2.7)
   listen (~> 3.3)
   pg (~> 1.1)
+  pry-byebug
   puma (~> 5.0)
   rack-mini-profiler (~> 2.0)
   rails (~> 6.1.4)

app/controllers/admin/admin_users_controller.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+module Admin
+  class AdminUsersController < Admin::ApplicationController
+    def valid_action?(name, resource = resource_class)
+      ["edit"].exclude?(name.to_s) && super
+    end
+  end
+end

app/controllers/admin/application_controller.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+module Admin
+  class ApplicationController < Administrate::ApplicationController
+    before_action :authenticate_admin_user!
+  end
+end

app/dashboards/admin_user_dashboard.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+require "administrate/base_dashboard"
+
+class AdminUserDashboard < Administrate::BaseDashboard
+  # ATTRIBUTE_TYPES
+  # a hash that describes the type of each of the model's fields.
+  #
+  # Each different type represents an Administrate::Field object,
+  # which determines how the attribute is displayed
+  # on pages throughout the dashboard.
+  ATTRIBUTE_TYPES = {
+    id: Field::Number,
+    email: Field::String,
+    created_at: Field::DateTime,
+    updated_at: Field::DateTime,
+  }.freeze
+
+  # COLLECTION_ATTRIBUTES
+  # an array of attributes that will be displayed on the model's index page.
+  #
+  # By default, it's limited to four items to reduce clutter on index pages.
+  # Feel free to add, remove, or rearrange items.
+  COLLECTION_ATTRIBUTES = [:id, :email].freeze
+
+  # SHOW_PAGE_ATTRIBUTES
+  # an array of attributes that will be displayed on the model's show page.
+  SHOW_PAGE_ATTRIBUTES = [:id, :email, :created_at, :updated_at].freeze
+
+  # FORM_ATTRIBUTES
+  # an array of attributes that will be displayed
+  # on the model's form (`new` and `edit`) pages.
+  FORM_ATTRIBUTES = [:email].freeze
+
+  # COLLECTION_FILTERS
+  # a hash that defines filters that can be used while searching via the search
+  # field of the dashboard.
+  #
+  # For example to add an option to search for open resources by typing "open:"
+  # in the search field:
+  #
+  #   COLLECTION_FILTERS = {
+  #     open: ->(resources) { resources.where(open: true) }
+  #   }.freeze
+  COLLECTION_FILTERS = {}.freeze
+
+  # Overwrite this method to customize how admin users are displayed
+  # across all pages of the admin dashboard.
+  #
+  # def display_resource(admin_user)
+  #   "AdminUser ##{admin_user.id}"
+  # end
+end

config/routes.rb

@@ -1,5 +1,11 @@
 # frozen_string_literal: true
 Rails.application.routes.draw do
+  namespace :admin do
+    resources :admin_users
+
+    root to: "admin_users#index"
+  end
+
   devise_for :admin_users
   # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
 end