add basic pagination on wow_mounts page

Gemfile

@@ -42,7 +42,8 @@ gem 'sentry-rails', '~> 4.3.4'
 gem 'sentry-ruby', '~> 4.3.2'
 # Simple, efficient background processing for Ruby
 gem 'sidekiq', '~> 6.2.1'
-
+# Agnostic pagination in plain ruby
+gem 'pagy', '~> 4.3.0'
 # Reduces boot times through caching; required in config/boot.rb
 gem 'bootsnap', '>= 1.4.4', require: false
 

Gemfile.lock

@@ -184,6 +184,7 @@ GEM
       actionpack (>= 4.2)
       omniauth (>= 1.3.1)
     orm_adapter (0.5.0)
+    pagy (4.3.0)
     parallel (1.20.1)
     parser (3.0.1.0)
       ast (~> 2.4.1)
@@ -396,6 +397,7 @@ DEPENDENCIES
   mobility (~> 1.1.1)
   omniauth-bnet (~> 2.0.0)
   omniauth-rails_csrf_protection (~> 0.1.2)
+  pagy (~> 4.3.0)
   pg (~> 1.1)
   pry-rails (~> 0.3.9)
   puma (~> 5.0)

app/controllers/protected_controller.rb

@@ -1,3 +1,4 @@
 class ProtectedController < ApplicationController
   before_action :authenticate_user!
+  include Pagy::Backend
 end

app/controllers/wow_mounts_controller.rb

@@ -1,6 +1,6 @@
 class WowMountsController < ProtectedController
   def index
-    @wow_mounts = WowMount.all
+    @pagy, @wow_mounts = pagy(WowMount.all, items: 12)
   end
 
   def show

app/helpers/application_helper.rb

@@ -1,2 +1,3 @@
 module ApplicationHelper
+  include Pagy::Frontend
 end

app/views/wow_mounts/index.html.erb

@@ -1,20 +1,17 @@
 <h2>Mount list</h2>
 
-<table class="table table-hover table-dark table-image">
-  <thead>
-    <tr>
-      <th scope="col"><%= t('wow_mounts.mount_list.name') %></th>
-      <th scope="col"><%= t('wow_mounts.mount_list.description') %></th>
-      <th scope="col"><%= t('wow_mounts.mount_list.owned') %></th>
-    </tr>
-  </thead>
-  <tbody>
+<div class="row">
 <% @wow_mounts.each do |mount| %>
-    <tr>
-      <td><%= link_to mount.name, mount %></td>
-      <td><%= mount.description %></td>
-      <td></td>
-    </tr>
+  <div class="col-2 d-flex justify-content-center">
+    <div class="card" style="width: 18rem;">
+      <img src=<%= mount.asset_zoom %> class="card-img-top" alt="<%= mount.name %>-zoom-image">
+      <div class="card-body">
+        <h5 class="card-title"><%= mount.name %></h5>
+        <p class="card-text"><%= mount.description %></p>
+        <%= link_to 'Detail', mount, class: "btn btn-primary" %>
+      </div>
+    </div>
+  </div>
 <% end %>
-  </tbody>
-</table>
+<%== pagy_bootstrap_nav(@pagy) %>
+</div>

config/initializers/pagy.rb

@@ -0,0 +1,176 @@
+# frozen_string_literal: true
+
+# Pagy initializer file (4.3.0)
+# Customize only what you really need and notice that Pagy works also without any of the following lines.
+# Should you just cherry pick part of this file, please maintain the require-order of the extras
+
+
+# Extras
+# See https://ddnexus.github.io/pagy/extras
+
+
+# Backend Extras
+
+# Array extra: Paginate arrays efficiently, avoiding expensive array-wrapping and without overriding
+# See https://ddnexus.github.io/pagy/extras/array
+# require 'pagy/extras/array'
+
+# Countless extra: Paginate without any count, saving one query per rendering
+# See https://ddnexus.github.io/pagy/extras/countless
+# require 'pagy/extras/countless'
+# Pagy::VARS[:cycle] = false    # default
+
+# Elasticsearch Rails extra: Paginate `ElasticsearchRails::Results` objects
+# See https://ddnexus.github.io/pagy/extras/elasticsearch_rails
+# default :pagy_search method: change only if you use
+# also the searchkick extra that defines the same
+# VARS[:elasticsearch_rails_search_method] = :pagy_search
+# require 'pagy/extras/elasticsearch_rails'
+
+# Searchkick extra: Paginate `Searchkick::Results` objects
+# See https://ddnexus.github.io/pagy/extras/searchkick
+# default :pagy_search method: change only if you use
+# also the elasticsearch_rails extra that defines the same
+# VARS[:searchkick_search_method] = :pagy_search
+# require 'pagy/extras/searchkick'
+
+# Frontend Extras
+
+# Bootstrap extra: Add nav, nav_js and combo_nav_js helpers and templates for Bootstrap pagination
+# See https://ddnexus.github.io/pagy/extras/bootstrap
+require 'pagy/extras/bootstrap'
+
+# Bulma extra: Add nav, nav_js and combo_nav_js helpers and templates for Bulma pagination
+# See https://ddnexus.github.io/pagy/extras/bulma
+# require 'pagy/extras/bulma'
+
+# Foundation extra: Add nav, nav_js and combo_nav_js helpers and templates for Foundation pagination
+# See https://ddnexus.github.io/pagy/extras/foundation
+# require 'pagy/extras/foundation'
+
+# Materialize extra: Add nav, nav_js and combo_nav_js helpers for Materialize pagination
+# See https://ddnexus.github.io/pagy/extras/materialize
+# require 'pagy/extras/materialize'
+
+# Navs extra: Add nav_js and combo_nav_js javascript helpers
+# Notice: the other frontend extras add their own framework-styled versions,
+# so require this extra only if you need the unstyled version
+# See https://ddnexus.github.io/pagy/extras/navs
+# require 'pagy/extras/navs'
+
+# Semantic extra: Add nav, nav_js and combo_nav_js helpers for Semantic UI pagination
+# See https://ddnexus.github.io/pagy/extras/semantic
+# require 'pagy/extras/semantic'
+
+# UIkit extra: Add nav helper and templates for UIkit pagination
+# See https://ddnexus.github.io/pagy/extras/uikit
+# require 'pagy/extras/uikit'
+
+# Multi size var used by the *_nav_js helpers
+# See https://ddnexus.github.io/pagy/extras/navs#steps
+# Pagy::VARS[:steps] = { 0 => [2,3,3,2], 540 => [3,5,5,3], 720 => [5,7,7,5] }   # example
+
+
+# Feature Extras
+
+# Headers extra: http response headers (and other helpers) useful for API pagination
+# See http://ddnexus.github.io/pagy/extras/headers
+# require 'pagy/extras/headers'
+# Pagy::VARS[:headers] = { page: 'Current-Page', items: 'Page-Items', count: 'Total-Count', pages: 'Total-Pages' }     # default
+
+# Support extra: Extra support for features like: incremental, infinite, auto-scroll pagination
+# See https://ddnexus.github.io/pagy/extras/support
+# require 'pagy/extras/support'
+
+# Items extra: Allow the client to request a custom number of items per page with an optional selector UI
+# See https://ddnexus.github.io/pagy/extras/items
+# require 'pagy/extras/items'
+# Pagy::VARS[:items_param] = :items    # default
+# Pagy::VARS[:max_items]   = 100       # default
+
+# Overflow extra: Allow for easy handling of overflowing pages
+# See https://ddnexus.github.io/pagy/extras/overflow
+# require 'pagy/extras/overflow'
+# Pagy::VARS[:overflow] = :empty_page    # default  (other options: :last_page and :exception)
+
+# Metadata extra: Provides the pagination metadata to Javascript frameworks like Vue.js, react.js, etc.
+# See https://ddnexus.github.io/pagy/extras/metadata
+# you must require the shared internal extra (BEFORE the metadata extra) ONLY if you need also the :sequels
+# require 'pagy/extras/shared'
+# require 'pagy/extras/metadata'
+# For performance reason, you should explicitly set ONLY the metadata you use in the frontend
+# Pagy::VARS[:metadata] = [:scaffold_url, :count, :page, :prev, :next, :last]    # example
+
+# Trim extra: Remove the page=1 param from links
+# See https://ddnexus.github.io/pagy/extras/trim
+# require 'pagy/extras/trim'
+# after requiring it will trim by default
+# set to false if you want to make :trim an opt-in variable
+# Pagy::VARS[:trim] = true # default
+
+
+# Pagy Variables
+# See https://ddnexus.github.io/pagy/api/pagy#variables
+# All the Pagy::VARS are set for all the Pagy instances but can be overridden
+# per instance by just passing them to Pagy.new or the #pagy controller method
+
+
+# Instance variables
+# See https://ddnexus.github.io/pagy/api/pagy#instance-variables
+# Pagy::VARS[:items] = 20                                   # default
+
+
+# Other Variables
+# See https://ddnexus.github.io/pagy/api/pagy#other-variables
+# Pagy::VARS[:size]       = [1,4,4,1]                       # default
+# Pagy::VARS[:page_param] = :page                           # default
+# Pagy::VARS[:params]     = {}                              # default
+# Pagy::VARS[:anchor]     = '#anchor'                       # example
+# Pagy::VARS[:link_extra] = 'data-remote="true"'            # example
+
+
+# Rails
+
+# Rails: extras assets path required by the helpers that use javascript
+# (pagy*_nav_js, pagy*_combo_nav_js, and pagy_items_selector_js)
+# See https://ddnexus.github.io/pagy/extras#javascript
+# Rails.application.config.assets.paths << Pagy.root.join('javascripts')
+
+
+# I18n
+
+# Pagy internal I18n: ~18x faster using ~10x less memory than the i18n gem
+# See https://ddnexus.github.io/pagy/api/frontend#i18n
+# Notice: No need to configure anything in this section if your app uses only "en"
+# or if you use the i18n extra below
+#
+# Examples:
+# load the "de" built-in locale:
+# Pagy::I18n.load(locale: 'de')
+#
+# load the "de" locale defined in the custom file at :filepath:
+# Pagy::I18n.load(locale: 'de', filepath: 'path/to/pagy-de.yml')
+#
+# load the "de", "en" and "es" built-in locales:
+# (the first passed :locale will be used also as the default_locale)
+# Pagy::I18n.load({locale: 'de'},
+#                 {locale: 'en'},
+#                 {locale: 'es'})
+#
+# load the "en" built-in locale, a custom "es" locale,
+# and a totally custom locale complete with a custom :pluralize proc:
+# (the first passed :locale will be used also as the default_locale)
+# Pagy::I18n.load({locale: 'en'},
+#                 {locale: 'es', filepath: 'path/to/pagy-es.yml'},
+#                 {locale: 'xyz',  # not built-in
+#                  filepath: 'path/to/pagy-xyz.yml',
+#                  pluralize: lambda{|count| ... } )
+
+
+# I18n extra: uses the standard i18n gem which is ~18x slower using ~10x more memory
+# than the default pagy internal i18n (see above)
+# See https://ddnexus.github.io/pagy/extras/i18n
+# require 'pagy/extras/i18n'
+
+# Default i18n key
+# Pagy::VARS[:i18n_key] = 'pagy.item_name'   # default