posts: eliminate pool_id, favgroup_id url params.

Replace the `pool_id` and `favgroup_id` url params:

    https://danbooru.donmai.us/posts/123?pool_id=456
    https://danbooru.donmai.us/posts/123?favgroup_id=456

with the `q` param:

    https://danbooru.donmai.us/posts/123?q=pool:456
    https://danbooru.donmai.us/posts/123?q=favgroup:456

app/components/post_navbar_component.rb

@@ -1,14 +1,10 @@
 class PostNavbarComponent < ApplicationComponent
-  extend Memoist
+  attr_reader :post, :current_user, :search
 
-  attr_reader :post, :current_user, :search, :pool_id, :favgroup_id
-
-  def initialize(post:, current_user:, search: nil, pool_id: nil, favgroup_id: nil)
+  def initialize(post:, current_user:, search: nil)
     @post = post
     @current_user = current_user
     @search = search.presence || "status:any"
-    @pool_id = pool_id&.to_i
-    @favgroup_id = favgroup_id&.to_i
   end
 
   def render?
@@ -16,24 +12,30 @@ class PostNavbarComponent < ApplicationComponent
   end
 
   def pools
-    post.pools.undeleted.sort_by do |pool|
+    @pools ||= post.pools.undeleted.sort_by do |pool|
       [pool.id == pool_id ? 0 : 1, pool.is_series? ? 0 : 1, pool.name]
     end
   end
 
   def favgroups
-    current_user.favorite_groups.for_post(post.id).sort_by do |favgroup|
+    @favgroups ||= current_user.favorite_groups.for_post(post.id).sort_by do |favgroup|
       [favgroup.id == favgroup_id ? 0 : 1, favgroup.name]
     end
   end
 
   def has_search_navbar?
-    !has_order_metatag? && pool_id.blank? && favgroup_id.blank?
+    !query.has_metatag?(:order, :ordfav, :ordpool) && pool_id.blank? && favgroup_id.blank?
   end
 
-  def has_order_metatag?
-    PostQueryBuilder.new(search).has_metatag?(:order, :ordfav, :ordpool)
+  def pool_id
+    @pool_id ||= query.find_metatag(:pool, :ordpool)&.to_i
   end
 
-  memoize :pools, :favgroups
+  def favgroup_id
+    @favgroup_id ||= query.find_metatag(:favgroup, :ordfavgroup)&.to_i
+  end
+
+  def query
+    @query ||= PostQueryBuilder.new(search)
+  end
 end

app/components/post_navbar_component/post_navbar_component.html.erb

@@ -16,11 +16,11 @@
 
     <%= tag.li class: "pool-navbar pool-category-#{pool.category}", "data-selected": selected do %>
       <span class="first">
-        <%= link_to_unless first_post_id == post.id, "«", post_path(first_post_id, pool_id: pool.id), rel: "nofollow", title: "to page 1" %>
+        <%= link_to_unless first_post_id == post.id, "«", post_path(first_post_id, q: "pool:#{pool.id}"), rel: "nofollow", title: "to page 1" %>
       </span>
 
       <span class="prev">
-        <%= link_to_if previous_post_id, "‹ prev", post_path(previous_post_id.to_i, pool_id: pool.id), rel: ["nofollow", ("prev" if selected)], title: "to page #{pool.page_number(previous_post_id)}" %>
+        <%= link_to_if previous_post_id, "‹ prev", post_path(previous_post_id.to_i, q: "pool:#{pool.id}"), rel: ["nofollow", ("prev" if selected)], title: "to page #{pool.page_number(previous_post_id)}" %>
       </span>
 
       <span class="pool-name">
@@ -28,11 +28,11 @@
       </span>
 
       <span class="next">
-        <%= link_to_if next_post_id, "next ›", post_path(next_post_id.to_i, pool_id: pool.id), rel: ["nofollow", ("next" if selected)], title: "to page #{pool.page_number(next_post_id)}" %>
+        <%= link_to_if next_post_id, "next ›", post_path(next_post_id.to_i, q: "pool:#{pool.id}"), rel: ["nofollow", ("next" if selected)], title: "to page #{pool.page_number(next_post_id)}" %>
       </span>
 
       <span class="last">
-        <%= link_to_unless last_post_id == post.id, "»", post_path(last_post_id, pool_id: pool.id), rel: "nofollow", title: "to page #{pool.post_count}" %>
+        <%= link_to_unless last_post_id == post.id, "»", post_path(last_post_id, q: "pool:#{pool.id}"), rel: "nofollow", title: "to page #{pool.post_count}" %>
       </span>
     <% end %>
   <% end %>
@@ -46,11 +46,11 @@
 
     <%= tag.li class: "favgroup-navbar", "data-selected": selected do %>
       <span class="first">
-        <%= link_to_unless first_post_id == post.id, "«", post_path(first_post_id, favgroup_id: favgroup.id), rel: "nofollow" %>
+        <%= link_to_unless first_post_id == post.id, "«", post_path(first_post_id, q: "favgroup:#{favgroup.id}"), rel: "nofollow" %>
       </span>
 
       <span class="prev">
-        <%= link_to_if previous_post_id, "‹ prev", post_path(previous_post_id.to_i, favgroup_id: favgroup.id), rel: ["nofollow", ("prev" if selected)] %>
+        <%= link_to_if previous_post_id, "‹ prev", post_path(previous_post_id.to_i, q: "favgroup:#{favgroup.id}"), rel: ["nofollow", ("prev" if selected)] %>
       </span>
 
       <span class="favgroup-name">
@@ -58,11 +58,11 @@
       </span>
 
       <span class="next">
-        <%= link_to_if next_post_id, "next ›", post_path(next_post_id.to_i, favgroup_id: favgroup.id), rel: ["nofollow", ("next" if selected)] %>
+        <%= link_to_if next_post_id, "next ›", post_path(next_post_id.to_i, q: "favgroup:#{favgroup.id}"), rel: ["nofollow", ("next" if selected)] %>
       </span>
 
       <span class="last">
-        <%= link_to_unless last_post_id == post.id, "»", post_path(last_post_id, favgroup_id: favgroup.id), rel: "nofollow" %>
+        <%= link_to_unless last_post_id == post.id, "»", post_path(last_post_id, q: "favgroup:#{favgroup.id}"), rel: "nofollow" %>
       </span>
     <% end %>
   <% end %>

app/components/post_preview_component.rb

@@ -3,18 +3,16 @@
 class PostPreviewComponent < ApplicationComponent
   with_collection_parameter :post
 
-  attr_reader :post, :tags, :show_deleted, :show_cropped, :link_target, :pool, :pool_id, :favgroup_id, :similarity, :recommended, :compact, :size, :current_user, :options
+  attr_reader :post, :tags, :show_deleted, :show_cropped, :link_target, :pool, :similarity, :recommended, :compact, :size, :current_user, :options
   delegate :external_link_to, :time_ago_in_words_tagged, :empty_heart_icon, to: :helpers
 
-  def initialize(post:, tags: "", show_deleted: false, show_cropped: true, link_target: post, pool: nil, pool_id: nil, favgroup_id: nil, similarity: nil, recommended: nil, compact: nil, size: nil, current_user: CurrentUser.user, **options)
+  def initialize(post:, tags: "", show_deleted: false, show_cropped: true, link_target: post, pool: nil, similarity: nil, recommended: nil, compact: nil, size: nil, current_user: CurrentUser.user, **options)
     @post = post
-    @tags = tags
+    @tags = tags.presence
     @show_deleted = show_deleted
     @show_cropped = show_cropped
     @link_target = link_target
     @pool = pool
-    @pool_id = pool_id
-    @favgroup_id = favgroup_id
     @similarity = similarity.round(1) if similarity.present?
     @recommended = recommended.round(1) if recommended.present?
     @compact = compact
@@ -31,16 +29,6 @@ class PostPreviewComponent < ApplicationComponent
     { class: [classes, *preview_class].compact.join(" "), **data_attributes }
   end
 
-  def link_params
-    link_params = {}
-
-    link_params["q"] = tags if tags.present?
-    link_params["pool_id"] = pool_id if pool_id
-    link_params["favgroup_id"] = favgroup_id if favgroup_id
-
-    link_params
-  end
-
   def cropped_url
     if show_cropped && post.has_cropped? && !current_user.disable_cropped_thumbnails?
       post.crop_file_url

app/components/post_preview_component/post_preview_component.html.erb

@@ -1,5 +1,5 @@
 <%= tag.article id: "post_#{post.id}", **article_attrs do -%>
-  <%= link_to polymorphic_path(link_target, link_params) do -%>
+  <%= link_to polymorphic_path(link_target, q: tags) do -%>
     <picture>
       <%= tag.source media: "(max-width: 660px)", srcset: cropped_url -%>
       <%= tag.source media: "(min-width: 660px)", srcset: post.preview_file_url -%>

app/logical/post_query_builder.rb

@@ -949,8 +949,8 @@ class PostQueryBuilder
       metatags.select { |term| term.name.in?(names.map(&:to_s)) }
     end
 
-    def find_metatag(metatag)
-      select_metatags(metatag).first.try(:value)
+    def find_metatag(*metatags)
+      select_metatags(*metatags).first.try(:value)
     end
 
     def has_metatag?(*metatag_names)

app/views/favorite_groups/show.html.erb

@@ -19,7 +19,7 @@
       <% if @favorite_group.post_count == 0 %>
         <%= render "post_sets/blank" %>
       <% else %>
-        <%= post_previews_html(@posts, favgroup_id: @favorite_group.id, show_deleted: true) %>
+        <%= post_previews_html(@posts, tags: "favgroup:#{@favorite_group.id}", show_deleted: true) %>
 
         <%= numbered_paginator(@posts) %>
       <% end %>

app/views/pools/show.html.erb

@@ -24,7 +24,7 @@
       <% if @pool.post_count == 0 %>
         <%= render "post_sets/blank" %>
       <% else %>
-        <%= post_previews_html(@posts, pool_id: @pool.id, show_deleted: @pool.is_series?) %>
+        <%= post_previews_html(@posts, tags: "pool:#{@pool.id}", show_deleted: @pool.is_series?) %>
 
         <%= numbered_paginator(@posts) %>
       <% end %>

app/views/posts/show.html.erb

@@ -39,7 +39,7 @@
 
 <% content_for(:content) do %>
   <% if !CurrentUser.user.new_post_navigation_layout %>
-    <%= render_post_navbar(@post, current_user: CurrentUser.user, search: params[:q], pool_id: params[:pool_id], favgroup_id: params[:favgroup_id]) %>
+    <%= render_post_navbar(@post, current_user: CurrentUser.user, search: params[:q]) %>
   <% end %>
 
   <%= render "posts/partials/show/notices", :post => @post %>
@@ -83,7 +83,7 @@
   <% end %>
 
   <% if CurrentUser.user.new_post_navigation_layout %>
-    <%= render_post_navbar(@post, current_user: CurrentUser.user, search: params[:q], pool_id: params[:pool_id], favgroup_id: params[:favgroup_id]) %>
+    <%= render_post_navbar(@post, current_user: CurrentUser.user, search: params[:q]) %>
   <% end %>
 
   <menu id="post-sections">

test/components/post_navbar_component_test.rb

@@ -20,33 +20,51 @@ class PostNavbarComponentTest < ViewComponent::TestCase
     end
 
     context "for a post with pools" do
-      should "render" do
+      setup do
         as(@user) do
           @pool1 = create(:pool, category: "series")
           @pool2 = create(:pool, category: "collection")
           @post.update(tag_string: "pool:#{@pool1.id} pool:#{@pool2.id}")
         end
+      end
 
-        render_post_navbar(@post, current_user: @user, pool_id: @pool1.id)
+      should "render" do
+        render_post_navbar(@post, current_user: @user)
 
         assert_css(".pool-name", text: "Pool: #{@pool1.pretty_name}")
         assert_css(".pool-name", text: "Pool: #{@pool2.pretty_name}")
       end
+
+      should "highlight the selected pool" do
+        render_post_navbar(@post, current_user: @user, search: "pool:#{@pool1.id}")
+
+        assert_css(".pool-navbar[data-selected=true] .pool-name", text: "Pool: #{@pool1.pretty_name}")
+        assert_css(".pool-navbar[data-selected=false] .pool-name", text: "Pool: #{@pool2.pretty_name}")
+      end
     end
 
     context "for a post with favgroups" do
-      should "render" do
+      setup do
         as(@user) do
           @favgroup1 = create(:favorite_group, creator: @user)
           @favgroup2 = create(:favorite_group, creator: @user)
           @post.update(tag_string: "favgroup:#{@favgroup1.id} favgroup:#{@favgroup2.id}")
         end
+      end
 
-        render_post_navbar(@post, current_user: @user, favgroup_id: @favgroup1.id)
+      should "render" do
+        render_post_navbar(@post, current_user: @user, search: "favgroup:#{@favgroup1.id}")
 
         assert_css(".favgroup-name", text: "Favgroup: #{@favgroup1.pretty_name}")
         assert_css(".favgroup-name", text: "Favgroup: #{@favgroup2.pretty_name}")
       end
+
+      should "highlight the selected favgroup" do
+        render_post_navbar(@post, current_user: @user, search: "favgroup:#{@favgroup1.id}")
+
+        assert_css(".favgroup-navbar[data-selected=true] .favgroup-name", text: "Favgroup: #{@favgroup1.pretty_name}")
+        assert_css(".favgroup-navbar[data-selected=false] .favgroup-name", text: "Favgroup: #{@favgroup2.pretty_name}")
+      end
     end
   end
 end