Paginate wishlist items

Gemfile

@@ -31,6 +31,10 @@ gem 'jbuilder', '~> 2.5'
 # A gem to automate using jQuery with Rails
 gem 'jquery-rails', '~> 4.3.1'
 
+# Gem for pagination
+gem 'kaminari'
+gem 'bootstrap4-kaminari-views'
+
 # required for Bootstrap tooltips
 source 'https://rails-assets.org' do
   gem 'rails-assets-tether', '>= 1.3.3'

Gemfile.lock

@@ -51,6 +51,9 @@ GEM
     bootstrap (4.0.0.alpha6)
       autoprefixer-rails (>= 6.0.3)
       sass (>= 3.4.19)
+    bootstrap4-kaminari-views (1.0.0)
+      kaminari (>= 0.13)
+      rails (>= 3.1)
     builder (3.2.3)
     bullet (5.6.1)
       activesupport (>= 3.0.0)
@@ -109,6 +112,18 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     jwt (1.5.6)
+    kaminari (1.1.1)
+      activesupport (>= 4.1.0)
+      kaminari-actionview (= 1.1.1)
+      kaminari-activerecord (= 1.1.1)
+      kaminari-core (= 1.1.1)
+    kaminari-actionview (1.1.1)
+      actionview
+      kaminari-core (= 1.1.1)
+    kaminari-activerecord (1.1.1)
+      activerecord
+      kaminari-core (= 1.1.1)
+    kaminari-core (1.1.1)
     launchy (2.4.3)
       addressable (~> 2.3)
     listen (3.1.5)
@@ -272,6 +287,7 @@ PLATFORMS
 DEPENDENCIES
   annotate (~> 2.7)
   bootstrap (~> 4.0.0.alpha6)
+  bootstrap4-kaminari-views
   bullet
   byebug
   capybara (~> 2.13)
@@ -282,6 +298,7 @@ DEPENDENCIES
   httparty
   jbuilder (~> 2.5)
   jquery-rails (~> 4.3.1)
+  kaminari
   launchy (~> 2.4.3)
   listen (>= 3.0.5, < 3.2)
   newrelic_rpm

app/controllers/wishlist_items_controller.rb

@@ -3,7 +3,7 @@ class WishlistItemsController < ApplicationController
 
   def index
     skip_authorization
-    @wishlist_items = WishlistItem.includes(:item, :wishlist).priority_order
+    @wishlist_items = WishlistItem.includes(:item, :wishlist).page(params[:page]).per(10)
   end
 
   def create

app/controllers/wishlists_controller.rb

@@ -5,7 +5,7 @@ def show
     skip_authorization
     @wishlist = Wishlist.includes(wishlist_items: :item).find(params[:id])
     @site_managers = @wishlist.users
-    @wishlist_items = @wishlist.wishlist_items.priority_order
+    @wishlist_items = @wishlist.wishlist_items.page(params[:page]).per(10)
   end
 
   def new

app/models/wishlist_item.rb

@@ -27,5 +27,4 @@ class WishlistItem < ApplicationRecord
   validates :quantity, presence: true,
                        numericality: { greater_than_or_equal_to: 0 }
 
-  scope :priority_order, -> { order(priority: :desc) }
 end

app/views/kaminari/_first_page.html.erb

@@ -0,0 +1,3 @@
+<li class="page-item">
+  <%= link_to_unless current_page.first?, raw(t 'views.pagination.first'), url, remote: remote, class: 'page-link' %>
+</li>

app/views/kaminari/_gap.html.erb

@@ -0,0 +1,3 @@
+<li class='page-item disabled'>
+  <%= link_to raw(t 'views.pagination.truncate'), '#', class: 'page-link' %>
+</li>

app/views/kaminari/_last_page.html.erb

@@ -0,0 +1,3 @@
+<li class="page-item">
+  <%= link_to_unless current_page.last?, raw(t 'views.pagination.last'), url, remote: remote, class: 'page-link' %>
+</li>

app/views/kaminari/_next_page.html.erb

@@ -0,0 +1,3 @@
+<li class="page-item">
+  <%= link_to_unless current_page.last?, raw(t 'views.pagination.next'), url, rel: 'next', remote: remote, class: 'page-link' %>
+</li>

app/views/kaminari/_page.html.erb

@@ -0,0 +1,9 @@
+<% if page.current? %>
+  <li class="page-item active">
+    <%= content_tag :a, page, remote: remote, rel: (page.next? ? 'next' : (page.prev? ? 'prev' : nil)), class: 'page-link' %>
+  </li>
+<% else %>
+  <li class="page-item">
+    <%= link_to page, url, remote: remote, rel: (page.next? ? 'next' : (page.prev? ? 'prev' : nil)), class: 'page-link' %>
+  </li>
+<% end %>

app/views/kaminari/_paginator.html.erb

@@ -0,0 +1,17 @@
+  <%= paginator.render do %>
+  <nav>
+      <ul class="pagination justify-content-center">
+        <%= first_page_tag unless current_page.first? %>
+        <%= prev_page_tag unless current_page.first? %>
+        <% each_page do |page| %>
+        <% if page.left_outer? || page.right_outer? || page.inside_window? %>
+        <%= page_tag page %>
+        <% elsif !page.was_truncated? -%>
+        <%= gap_tag %>
+        <% end %>
+        <% end %>
+        <%= next_page_tag unless current_page.last? %>
+        <%= last_page_tag unless current_page.last? %>
+      </ul>
+  </nav>
+  <% end %>

app/views/kaminari/_prev_page.html.erb

@@ -0,0 +1,3 @@
+<li class="page-item">
+  <%= link_to_unless current_page.first?, raw(t 'views.pagination.previous'), url, rel: 'prev', remote: remote, class: 'page-link' %>
+</li>

app/views/wishlist_items/index.html.erb

@@ -9,4 +9,7 @@
   </div>
 
   <%= render @wishlist_items %>
+
+  <%= paginate @wishlist_items%>
+
 </div>

app/views/wishlists/show.html.erb

@@ -20,7 +20,9 @@
     <%= @wishlist.users.map(&:display_name).join(", ") %>
   </p>
 
-  <%= render @wishlist_items %>
+
+  <%= render @wishlist.wishlist_items %>
+  <%= paginate @wishlist_items %>
 
   <%= link_to 'Back', root_path %>
 </div>

config/initializers/kaminari_config.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+Kaminari.configure do |config|
+  # config.default_per_page = 5
+  # config.max_per_page = nil
+  # config.window = 4
+  # config.outer_window = 0
+  # config.left = 0
+  # config.right = 0
+  # config.page_method_name = :page
+  # config.param_name = :page
+  # config.params_on_first_page = false
+end

config/locales/en.yml

@@ -30,4 +30,10 @@
 # available at http://guides.rubyonrails.org/i18n.html.
 
 en:
-  hello: "Hello world"
+  views:
+    pagination:
+      first: "« First"
+      last: "Last »"
+      previous: "‹ Prev"
+      next: "Next ›"
+      truncate: "…"