pagy

Gemfile

@@ -3,6 +3,7 @@ ruby '3.1.2'
 
 gem 'bootsnap', require: false
 gem 'importmap-rails'
+gem 'pagy'
 gem 'pg'
 gem 'puma'
 gem 'rackup'

Gemfile.lock

@@ -159,6 +159,7 @@ GEM
       racc (~> 1.4)
     nokogiri (1.16.3-x86_64-linux)
       racc (~> 1.4)
+    pagy (8.0.1)
     parallel (1.24.0)
     parser (3.3.0.5)
       ast (~> 2.4.1)
@@ -342,6 +343,7 @@ DEPENDENCIES
   error_highlight
   htmlbeautifier
   importmap-rails
+  pagy
   pg
   puma
   rackup

app/controllers/scores_controller.rb

@@ -1,10 +1,11 @@
 # ScoresController define Score and Grade interactions
 class ScoresController < ApplicationController
+  include Pagy::Backend
+
   before_action :set_score, only: %i[show edit update destroy]
 
   # GET /scores
   def index
-    @scores = Score.all
     logger.info 'this is a normal message'
     # logger.info({ one: 1, two: 2 })
     # logger.info 'this is an information', { four: 4, five: 5 }
@@ -15,6 +16,8 @@ class ScoresController < ApplicationController
     logger.info 'end of normal message'
     # logger.debug @scores
     # sleep 0.5
+    #
+    @pagy, @records = pagy(Score.all)
   end
 
   # GET /scores/1

app/helpers/application_helper.rb

@@ -1,3 +1,4 @@
 # global helper
 module ApplicationHelper
+  include Pagy::Frontend
 end

app/views/scores/index.html.erb

@@ -6,6 +6,10 @@
   </div>
 
   <div id="scores" class="min-w-full ">
-    <%= render @scores %>
+    <% @records.each do |score| %>
+      <%= render score %>
+    <%end%>
+
   </div>
+  <%== pagy_nav(@pagy) %>
 </div>

config/initializers/pagy.rb

@@ -0,0 +1,230 @@
+# frozen_string_literal: true
+
+# Instance variables
+# See https://ddnexus.github.io/pagy/docs/api/pagy#instance-variables
+# Pagy::DEFAULT[:page]   = 1                            # default
+# Pagy::DEFAULT[:items]  = 20                           # default
+# Pagy::DEFAULT[:outset] = 0                            # default
+
+# Other Variables
+# See https://ddnexus.github.io/pagy/docs/api/pagy#other-variables
+# Pagy::DEFAULT[:size]         = [1,4,4,1]              # default in pagy < 7.0
+# Pagy::DEFAULT[:page_param]   = :page                  # default
+# Pagy::DEFAULT[:fragment]     = '#fragment'            # example
+# Pagy::DEFAULT[:link_extra]   = 'data-remote="true"'   # example
+# Pagy::DEFAULT[:cycle]        = true                   # example
+# Pagy::DEFAULT[:request_path] = '/foo'                 # example
+# Pagy::DEFAULT[:count_args]   = []                     # example for non AR ORMs
+# Pagy::DEFAULT[:params]       = {}                     # default
+# NOTICE: The :params can be also set as a lambda e.g:
+# ->(params){ params.exclude('useless').merge!('custom' => 'useful') }
+
+# Extras
+# See https://ddnexus.github.io/pagy/categories/extra
+
+# Backend Extras
+
+# Arel extra: For better performance utilizing grouped ActiveRecord collections:
+# See: https://ddnexus.github.io/pagy/docs/extras/arel
+# require 'pagy/extras/arel'
+
+# Array extra: Paginate arrays efficiently, avoiding expensive array-wrapping and without overriding
+# See https://ddnexus.github.io/pagy/docs/extras/array
+# require 'pagy/extras/array'
+
+# Calendar extra: Add pagination filtering by calendar time unit (year, quarter, month, week, day)
+# See https://ddnexus.github.io/pagy/docs/extras/calendar
+# require 'pagy/extras/calendar'
+# Default for each unit
+# Pagy::Calendar::Year::DEFAULT[:order]     = :asc        # Time direction of pagination
+# Pagy::Calendar::Year::DEFAULT[:format]    = '%Y'        # strftime format
+#
+# Pagy::Calendar::Quarter::DEFAULT[:order]  = :asc        # Time direction of pagination
+# Pagy::Calendar::Quarter::DEFAULT[:format] = '%Y-Q%q'    # strftime format
+#
+# Pagy::Calendar::Month::DEFAULT[:order]    = :asc        # Time direction of pagination
+# Pagy::Calendar::Month::DEFAULT[:format]   = '%Y-%m'     # strftime format
+#
+# Pagy::Calendar::Week::DEFAULT[:order]     = :asc        # Time direction of pagination
+# Pagy::Calendar::Week::DEFAULT[:format]    = '%Y-%W'     # strftime format
+#
+# Pagy::Calendar::Day::DEFAULT[:order]      = :asc        # Time direction of pagination
+# Pagy::Calendar::Day::DEFAULT[:format]     = '%Y-%m-%d'  # strftime format
+#
+# Uncomment the following lines, if you need calendar localization without using the I18n extra
+# module LocalizePagyCalendar
+#   def localize(time, opts)
+#     ::I18n.l(time, **opts)
+#   end
+# end
+# Pagy::Calendar.prepend LocalizePagyCalendar
+
+# Countless extra: Paginate without any count, saving one query per rendering
+# See https://ddnexus.github.io/pagy/docs/extras/countless
+# require 'pagy/extras/countless'
+# Pagy::DEFAULT[:countless_minimal] = false   # default (eager loading)
+
+# Elasticsearch Rails extra: Paginate `ElasticsearchRails::Results` objects
+# See https://ddnexus.github.io/pagy/docs/extras/elasticsearch_rails
+# Default :pagy_search method: change only if you use also
+# the searchkick or meilisearch extra that defines the same
+# Pagy::DEFAULT[:elasticsearch_rails_pagy_search] = :pagy_search
+# Default original :search method called internally to do the actual search
+# Pagy::DEFAULT[:elasticsearch_rails_search] = :search
+# require 'pagy/extras/elasticsearch_rails'
+
+# 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::DEFAULT[:headers] = { page: 'Current-Page',
+#                            items: 'Page-Items',
+#                            count: 'Total-Count',
+#                            pages: 'Total-Pages' }     # default
+
+# Meilisearch extra: Paginate `Meilisearch` result objects
+# See https://ddnexus.github.io/pagy/docs/extras/meilisearch
+# Default :pagy_search method: change only if you use also
+# the elasticsearch_rails or searchkick extra that define the same method
+# Pagy::DEFAULT[:meilisearch_pagy_search] = :pagy_search
+# Default original :search method called internally to do the actual search
+# Pagy::DEFAULT[:meilisearch_search] = :ms_search
+# require 'pagy/extras/meilisearch'
+
+# Metadata extra: Provides the pagination metadata to Javascript frameworks like Vue.js, react.js, etc.
+# See https://ddnexus.github.io/pagy/docs/extras/metadata
+# you must require the frontend helpers internal extra (BEFORE the metadata extra) ONLY if you need also the :sequels
+# require 'pagy/extras/frontend_helpers'
+# require 'pagy/extras/metadata'
+# For performance reasons, you should explicitly set ONLY the metadata you use in the frontend
+# Pagy::DEFAULT[:metadata] = %i[scaffold_url page prev next last]   # example
+
+# Searchkick extra: Paginate `Searchkick::Results` objects
+# See https://ddnexus.github.io/pagy/docs/extras/searchkick
+# Default :pagy_search method: change only if you use also
+# the elasticsearch_rails or meilisearch extra that defines the same
+# DEFAULT[:searchkick_pagy_search] = :pagy_search
+# Default original :search method called internally to do the actual search
+# Pagy::DEFAULT[:searchkick_search] = :search
+# require 'pagy/extras/searchkick'
+# uncomment if you are going to use Searchkick.pagy_search
+# Searchkick.extend Pagy::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/docs/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/docs/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/docs/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/docs/extras/materialize
+# require 'pagy/extras/materialize'
+
+# Pagy extra: Add the pagy styled versions of the javascript-powered navs
+# and a few other components to the Pagy::Frontend module.
+# See https://ddnexus.github.io/pagy/docs/extras/pagy
+# require 'pagy/extras/pagy'
+
+# Semantic extra: Add nav, nav_js and combo_nav_js helpers for Semantic UI pagination
+# See https://ddnexus.github.io/pagy/docs/extras/semantic
+# require 'pagy/extras/semantic'
+
+# UIkit extra: Add nav helper and templates for UIkit pagination
+# See https://ddnexus.github.io/pagy/docs/extras/uikit
+# require 'pagy/extras/uikit'
+
+# Multi size var used by the *_nav_js helpers
+# See https://ddnexus.github.io/pagy/docs/extras/pagy#steps
+# Pagy::DEFAULT[:steps] = { 0 => [2,3,3,2], 540 => [3,5,5,3], 720 => [5,7,7,5] }   # example
+
+# Feature Extras
+
+# Gearbox extra: Automatically change the number of items per page depending on the page number
+# See https://ddnexus.github.io/pagy/docs/extras/gearbox
+# require 'pagy/extras/gearbox'
+# set to false only if you want to make :gearbox_extra an opt-in variable
+# Pagy::DEFAULT[:gearbox_extra] = false               # default true
+# Pagy::DEFAULT[:gearbox_items] = [15, 30, 60, 100]   # default
+
+# 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/docs/extras/items
+# require 'pagy/extras/items'
+# set to false only if you want to make :items_extra an opt-in variable
+# Pagy::DEFAULT[:items_extra] = false    # default true
+# Pagy::DEFAULT[:items_param] = :items   # default
+# Pagy::DEFAULT[:max_items]   = 100      # default
+
+# Overflow extra: Allow for easy handling of overflowing pages
+# See https://ddnexus.github.io/pagy/docs/extras/overflow
+# require 'pagy/extras/overflow'
+# Pagy::DEFAULT[:overflow] = :empty_page    # default  (other options: :last_page and :exception)
+
+# Trim extra: Remove the page=1 param from links
+# See https://ddnexus.github.io/pagy/docs/extras/trim
+# require 'pagy/extras/trim'
+# set to false only if you want to make :trim_extra an opt-in variable
+# Pagy::DEFAULT[:trim_extra] = false # default true
+
+# Standalone extra: Use pagy in non Rack environment/gem
+# See https://ddnexus.github.io/pagy/docs/extras/standalone
+# require 'pagy/extras/standalone'
+# Pagy::DEFAULT[:url] = 'http://www.example.com/subdir'  # optional default
+
+# Jsonapi extra: Implements JSON:API specifications
+# See https://ddnexus.github.io/pagy/docs/extras/jsonapi
+# require 'pagy/extras/jsonapi'   # must be required after the other extras
+# set to false only if you want to make :jsonapi an opt-in variable
+# Pagy::DEFAULT[:jsonapi] = false  # default true
+
+# Rails
+# Enable the .js file 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/docs/api/javascript
+
+# With the asset pipeline
+# Sprockets need to look into the pagy javascripts dir, so add it to the assets paths
+# 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/docs/api/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: 'fr')
+#
+# 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/docs/extras/i18n
+# require 'pagy/extras/i18n'
+
+# When you are done setting your own default freeze it, so it will not get changed accidentally
+Pagy::DEFAULT.freeze