feat: add pagination to weather arts gallery

- Introduce ArtsController with index action
- Create index view for displaying weather arts
- Implement Kaminari for pagination functionality
- Add necessary routes for accessing arts
- Update Gemfile to include Kaminari gem
- Create views for pagination controls

This implementation enhances the Weather Arts Gallery, allowing users to view and navigate through a collection of AI-generated weather arts easily. Pagination controls have been added to improve usability.

Gemfile

@@ -45,6 +45,8 @@ gem "devise", "~> 4.9"
 gem "activeadmin", "~> 3.2"
 gem "friendly_id", "~> 5.5"
 
+gem 'kaminari', '~> 1.2'
+
 # gem "whenever", "~> 1.0"
 gem "ruby-openai", "~> 7.3"
 gem "httparty", "~> 0.22.0"

Gemfile.lock

@@ -494,6 +494,7 @@ DEPENDENCIES
   jbuilder
   jsbundling-rails
   kamal
+  kaminari (~> 1.2)
   pg (~> 1.5)
   propshaft
   puma (>= 5.0)

app/controllers/arts_controller.rb

@@ -0,0 +1,8 @@
+class ArtsController < ApplicationController
+  def index
+    @weather_arts = WeatherArt.includes(:city, city: [ :country, { country: :region } ])
+                              .order(created_at: :desc)
+                              .page(params[:page])
+                              .per(2)
+  end
+end

app/helpers/arts_helper.rb

@@ -0,0 +1,2 @@
+module ArtsHelper
+end

app/models/city.rb

@@ -5,6 +5,8 @@ class City < ApplicationRecord
 
   has_many :weather_arts, dependent: :destroy
 
+  delegate :region, to: :country
+
   validates :name, presence: true
   validates :latitude, presence: true
   validates :longitude, presence: true

app/views/arts/index.html.erb

@@ -0,0 +1,80 @@
+<!-- app/views/arts/index.html.erb -->
+<div class="min-h-screen">
+  <!-- 页面标题 -->
+  <div class="bg-gradient-to-r from-primary/10 to-secondary/10 py-16">
+    <div class="container mx-auto px-4">
+      <h1 class="text-4xl md:text-5xl font-display font-bold text-center mb-4">
+        Weather Arts Gallery
+      </h1>
+      <p class="text-xl text-center text-base-content/70 max-w-2xl mx-auto">
+        Explore our collection of AI-generated weather art from cities around the world
+      </p>
+    </div>
+  </div>
+
+  <div class="container mx-auto px-4 py-12">
+    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-6">
+      <% @weather_arts.each do |art| %>
+        <div class="card bg-base-100 shadow-xl hover:shadow-2xl transition-all duration-300 group">
+          <!-- 图片 -->
+          <figure class="relative aspect-square overflow-hidden">
+            <% if art.image.attached? %>
+              <%= image_tag art.image,
+                            class: "w-full h-full object-cover transform group-hover:scale-105 transition-transform duration-500" %>
+              <!-- 渐变遮罩 -->
+              <div class="absolute inset-0 bg-gradient-to-t from-black/60 to-transparent opacity-0 group-hover:opacity-100 transition-opacity duration-300"></div>
+
+              <!-- 悬停时显示的信息 -->
+              <div class="absolute inset-0 p-6 flex flex-col justify-end opacity-0 group-hover:opacity-100 transition-opacity duration-300">
+                <h3 class="text-white font-display text-xl mb-2">
+                  <%= art.city.name %>
+                </h3>
+                <p class="text-white/80 text-sm">
+                  <%= art.weather_date.strftime("%B %d, %Y") %>
+                </p>
+                <p class="text-white/90 mt-2">
+                  <%= art.temperature %>°C, <%= art.description %>
+                </p>
+              </div>
+            <% end %>
+          </figure>
+
+          <!-- 快速信息 -->
+          <div class="card-body p-4">
+            <div class="flex justify-between items-start">
+              <div>
+                <h3 class="font-display font-bold">
+                  <%= art.city.name %>
+                </h3>
+                <p class="text-sm text-base-content/70">
+                  <%= art.city.country.name %>
+                </p>
+              </div>
+              <div class="text-right">
+                <div class="text-lg font-bold"><%= art.temperature %>°C</div>
+                <div class="text-sm text-base-content/70">
+                  <%= art.weather_date.strftime("%b %d") %>
+                </div>
+              </div>
+            </div>
+
+            <%= link_to city_weather_art_path(art.city, art),
+                        class: "btn btn-ghost btn-sm w-full mt-3" do %>
+              View Details
+            <% end %>
+          </div>
+        </div>
+      <% end %>
+    </div>
+
+    <!-- 分页 -->
+    <div class="flex justify-center mt-12">
+      <div class="btn-group">
+        <%= link_to_prev_page @weather_arts, 'Previous',
+                              class: "btn btn-outline #{'btn-disabled' unless @weather_arts.prev_page}" %>
+        <%= link_to_next_page @weather_arts, 'Next',
+                              class: "btn btn-outline #{'btn-disabled' unless @weather_arts.next_page}" %>
+      </div>
+    </div>
+  </div>
+</div>

app/views/home/index.html.erb

@@ -58,3 +58,11 @@
     </div>
   </section>
 </div>
+<div class="text-center mt-12">
+  <%= link_to arts_path, class: "btn btn-primary btn-lg gap-2" do %>
+    View All Weather Arts
+    <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14 5l7 7m0 0l-7 7m7-7H3" />
+    </svg>
+  <% end %>
+</div>

app/views/kaminari/_first_page.html.erb

@@ -0,0 +1,11 @@
+<%# Link to the "First" page
+  - available local variables
+    url:           url to the first page
+    current_page:  a page object for the currently displayed page
+    total_pages:   total number of pages
+    per_page:      number of items to fetch per page
+    remote:        data-remote
+-%>
+<span class="first">
+  <%= link_to_unless current_page.first?, t('views.pagination.first').html_safe, url, remote: remote %>
+</span>

app/views/kaminari/_gap.html.erb

@@ -0,0 +1,8 @@
+<%# Non-link tag that stands for skipped pages...
+  - available local variables
+    current_page:  a page object for the currently displayed page
+    total_pages:   total number of pages
+    per_page:      number of items to fetch per page
+    remote:        data-remote
+-%>
+<span class="page gap"><%= t('views.pagination.truncate').html_safe %></span>

app/views/kaminari/_last_page.html.erb

@@ -0,0 +1,11 @@
+<%# Link to the "Last" page
+  - available local variables
+    url:           url to the last page
+    current_page:  a page object for the currently displayed page
+    total_pages:   total number of pages
+    per_page:      number of items to fetch per page
+    remote:        data-remote
+-%>
+<span class="last">
+  <%= link_to_unless current_page.last?, t('views.pagination.last').html_safe, url, remote: remote %>
+</span>

app/views/kaminari/_next_page.html.erb

@@ -0,0 +1,11 @@
+<%# Link to the "Next" page
+  - available local variables
+    url:           url to the next page
+    current_page:  a page object for the currently displayed page
+    total_pages:   total number of pages
+    per_page:      number of items to fetch per page
+    remote:        data-remote
+-%>
+<span class="next">
+  <%= link_to_unless current_page.last?, t('views.pagination.next').html_safe, url, rel: 'next', remote: remote %>
+</span>

app/views/kaminari/_page.html.erb

@@ -0,0 +1,12 @@
+<%# Link showing page number
+  - available local variables
+    page:          a page object for "this" page
+    url:           url to this page
+    current_page:  a page object for the currently displayed page
+    total_pages:   total number of pages
+    per_page:      number of items to fetch per page
+    remote:        data-remote
+-%>
+<span class="page<%= ' current' if page.current? %>">
+  <%= link_to_unless page.current?, page, url, {remote: remote, rel: page.rel} %>
+</span>

app/views/kaminari/_paginator.html.erb

@@ -0,0 +1,25 @@
+<%# The container tag
+  - available local variables
+    current_page:  a page object for the currently displayed page
+    total_pages:   total number of pages
+    per_page:      number of items to fetch per page
+    remote:        data-remote
+    paginator:     the paginator that renders the pagination tags inside
+-%>
+<%= paginator.render do -%>
+  <nav class="pagination" role="navigation" aria-label="pager">
+    <%= first_page_tag unless current_page.first? %>
+    <%= prev_page_tag unless current_page.first? %>
+    <% each_page do |page| -%>
+      <% if page.display_tag? -%>
+        <%= page_tag page %>
+      <% elsif !page.was_truncated? -%>
+        <%= gap_tag %>
+      <% end -%>
+    <% end -%>
+    <% unless current_page.out_of_range? %>
+      <%= next_page_tag unless current_page.last? %>
+      <%= last_page_tag unless current_page.last? %>
+    <% end %>
+  </nav>
+<% end -%>

app/views/kaminari/_prev_page.html.erb

@@ -0,0 +1,11 @@
+<%# Link to the "Previous" page
+  - available local variables
+    url:           url to the previous page
+    current_page:  a page object for the currently displayed page
+    total_pages:   total number of pages
+    per_page:      number of items to fetch per page
+    remote:        data-remote
+-%>
+<span class="prev">
+  <%= link_to_unless current_page.first?, t('views.pagination.previous').html_safe, url, rel: 'prev', remote: remote %>
+</span>

app/views/layouts/application.html.erb

@@ -33,6 +33,7 @@
       </div>
       <div class="flex-none">
         <%= link_to "Cities", cities_path, class: "btn btn-ghost font-sans" %>
+        <%= link_to "Arts", arts_path, class: "btn btn-ghost font-sans" %>
       </div>
     </div>
   </div>

config/initializers/kaminari_config.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+Kaminari.configure do |config|
+  # config.default_per_page = 25
+  # 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.max_pages = nil
+  # config.params_on_first_page = false
+end

config/routes.rb

@@ -6,6 +6,7 @@ Rails.application.routes.draw do
   resources :cities, only: [ :index, :show ] do
     resources :weather_arts, path: "weather", only: [ :show ], param: :slug
   end
+  resources :arts, only: [:index]
 
   # namespace :admin do
   #  resources :cities

test/controllers/arts_controller_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class ArtsControllerTest < ActionDispatch::IntegrationTest
+  # test "the truth" do
+  #   assert true
+  # end
+end