Add searchable field to page

Allow to toggle searchable field on page level. The field is only available if it was enabled in the Alchemy - module. The information can be used by search plugins (e.g. https://github.com/AlchemyCMS/alchemy-pg_search).

app/models/alchemy/page.rb

@@ -79,6 +79,7 @@ class Page < BaseRecord
       :restricted,
       :robot_index,
       :robot_follow,
+      :searchable,
       :sitemap,
       :tag_list,
       :title,

app/views/alchemy/admin/pages/_form.html.erb

@@ -19,6 +19,15 @@
   <%= f.input :title,
     input_html: {'data-alchemy-char-counter' => 60} %>
 
+  <% if Alchemy.enable_searchable %>
+    <div class="input check_boxes">
+      <label class="control-label"><%= Alchemy.t(:fulltext_search) %></label>
+      <div class="control_group">
+        <%= page_status_checkbox(@page, :searchable) %>
+      </div>
+    </div>
+  <% end %>
+
   <div class="input check_boxes">
     <label class="control-label"><%= Alchemy.t(:search_engines) %></label>
     <div class="control_group">

config/locales/alchemy.en.yml

@@ -594,6 +594,7 @@ en:
     saved_link: "Link saved."
     search: "search"
     search_engines: "Search engines"
+    fulltext_search: "Fulltext search"
     select_element: "Select element"
     seperate_tags_with_comma: "Seperate tags with comma"
     show_element_content: "Show content of this element."
@@ -879,6 +880,7 @@ en:
         page_layout: "Page type"
         public: "public"
         restricted: "restricted"
+        searchable: "show in search"
         robot_follow: "robot may follow links"
         robot_index: "allow robot to index"
         sitemap: "visible in sitemap"

db/migrate/20230119112425_add_searchable_to_alchemy_pages.rb

@@ -0,0 +1,7 @@
+class AddSearchableToAlchemyPages < ActiveRecord::Migration[6.0]
+  def change
+    return if column_exists?(:alchemy_pages, :searchable)
+
+    add_column :alchemy_pages, :searchable, :boolean, default: true, null: false
+  end
+end

lib/alchemy.rb

@@ -84,4 +84,17 @@ def self.preview_sources=(sources)
   def self.publish_targets
     @_publish_targets ||= Set.new
   end
+
+  # Enable full text search configuration
+  #
+  # It enables a searchable checkbox in the page form to toggle
+  # the searchable field. These information can used in a search
+  # plugin (e.g. https://github.com/AlchemyCMS/alchemy-pg_search).
+  #
+  # == Example
+  #
+  #     # config/initializers/alchemy.rb
+  #     Alchemy.enable_searchable = true
+  #
+  mattr_accessor :enable_searchable, default: false
 end