feat(gsoc'24): topic search implementation

app/controllers/simple_discussion/forum_threads_controller.rb

@@ -71,6 +71,17 @@ def destroy
     redirect_to simple_discussion.forum_threads_path
   end
 
+  def search
+    @forum_threads = if params[:query].present?
+      ForumThread.search(params[:query])
+        .includes(:user, :forum_category)
+        .paginate(per_page: 10, page: page_number)
+    else
+      []
+    end
+    render :index
+  end
+
   private
 
   def set_forum_thread
@@ -80,4 +91,8 @@ def set_forum_thread
   def forum_thread_params
     params.require(:forum_thread).permit(:title, :forum_category_id, forum_posts_attributes: [:body])
   end
+
+  def page_number
+    params[:page] || 1
+  end
 end

app/models/forum_post.rb

@@ -1,4 +1,5 @@
 require "language_filter"
+
 class ForumPost < ApplicationRecord
   belongs_to :forum_thread, counter_cache: true, touch: true
   belongs_to :user
@@ -25,6 +26,8 @@ def clean_body
     end
   end
 
+  private
+
   def solve_forum_thread
     forum_thread.update(solved: true)
   end

app/models/forum_thread.rb

@@ -40,6 +40,13 @@ def clean_title
     end
   end
 
+  # simple search implementation on all forum threads
+  def self.search(query)
+    joins(:forum_posts)
+      .where("LOWER(forum_threads.title) LIKE :query OR LOWER(forum_posts.body) LIKE :query", query: "%#{query.downcase}%")
+      .distinct
+  end
+
   def subscribed_users
     (users + optin_subscribers).uniq - optout_subscribers
   end

app/views/simple_discussion/forum_threads/index.html.erb

@@ -1,17 +1,21 @@
-<select class="custom-select w-auto mr-auto mb-4" onchange="window.location.href=this.value" name="choose_category">
-  <option value="<%= simple_discussion.forum_threads_path %>" <% if request.path == simple_discussion.forum_threads_path %> selected <% end %>><%= t("all_categories") %>&nbsp;&nbsp;&nbsp;</option>
-  <% ForumCategory.sorted.each do |category| %>
-    <option value="<%= simple_discussion.forum_category_forum_threads_path(category) %>" <% if request.path == simple_discussion.forum_category_forum_threads_path(category) %> selected <% end %> ><%= category.name %>&nbsp;&nbsp;&nbsp;</option>
+<div class="row m-2 align-items-center my-4">
+  <select class="custom-select w-auto mr-auto" onchange="window.location.href=this.value" name="choose_category">
+    <option value="<%= simple_discussion.forum_threads_path %>" <% if request.path == simple_discussion.forum_threads_path %> selected <% end %>><%= t("all_categories") %>&nbsp;&nbsp;&nbsp;</option>
+    <% ForumCategory.sorted.each do |category| %>
+      <option value="<%= simple_discussion.forum_category_forum_threads_path(category) %>" <% if request.path == simple_discussion.forum_category_forum_threads_path(category) %> selected <% end %> ><%= category.name %>&nbsp;&nbsp;&nbsp;</option>
+    <% end %>
+  </select>
+  <%= form_tag("/forum/threads/search", method: "get", id: "search-box", class: "form-inline") do %>
+    <%= text_field_tag :query, params[:query], placeholder: t('topic_search_input_placeholder'), autocomplete: "off", class: "form-control form-input" %>
+    <button class="btn primary-button" type="submit" name="button" value="Submit"><%= t('search') %></button>
   <% end %>
-</select>
+</div>
 <% if @forum_threads.none? %>
   <div><%= t('search_not_found') %>. <%= t('check_out') %> <%= link_to t('latest_questions'), simple_discussion.forum_threads_path %> <%= t('instead') %> </div>
 <% else %>
-
   <%= render partial: "simple_discussion/forum_threads/forum_thread", collection: @forum_threads %>
 
   <div class="forum-threads-nav text-center">
     <%= will_paginate @forum_threads, url_builder: simple_discussion, renderer: SimpleDiscussion::BootstrapLinkRenderer %>
   </div>
-
 <% end %>

config/locales/en.yml

@@ -60,3 +60,5 @@ en:
   unmark_as_solution: "Unmark as Solution"
   mark_as_solution: "Mark as Solution"
   report_post: "Report Post"
+  topic_search_input_placeholder: "Search for Forum Threads"
+  search: "Search"

config/locales/es.yml

@@ -59,3 +59,5 @@ es:
   unmark_as_solution: "Desmarcar como solución"
   mark_as_solution: "Marcar como solución"
   report_post: "Reportar publicación"
+  topic_search_input_placeholder: "Buscar hilos de foros"
+  search: "Buscar"

config/locales/fr.yml

@@ -61,3 +61,5 @@ fr:
   unmark_as_solution: "Démarquer comme solution"
   mark_as_solution: "Marquer comme solution"
   report_post: "Signaler le post"
+  topic_search_input_placeholder: "Rechercher des fils de discussion dans les forums"
+  search: "Rechercher"

config/routes.rb

@@ -7,6 +7,7 @@
         get :mine
         get :participating
         get :spam_reports
+        get :search
         get "category/:id", to: "forum_categories#index", as: :forum_category
       end