evitar confusiones entre diccionario y locale

el diccionario es lo que usa internamente pg para indexar, el locale es
el idioma que asignamos en sutty.

app/controllers/posts_controller.rb

@@ -17,13 +17,12 @@ class PostsController < ApplicationController
 
     @site = find_site
     @locale = locale
-    dictionary = IndexedPost.to_dictionary(locale: locale)
 
     # XXX: Cada vez que cambiamos un Post tocamos el sitio con lo que es
     # más simple saber si hubo cambios.
     if filter_params.present? || stale?(@site)
       # Todos los artículos de este sitio para el idioma actual
-      @posts = @site.indexed_posts.where(locale: dictionary)
+      @posts = @site.indexed_posts.where(locale: locale)
       # De este tipo
       @posts = @posts.where(layout: filter_params[:layout]) if filter_params[:layout]
       # Que estén dentro de la categoría

app/models/indexed_post.rb

@@ -19,7 +19,7 @@ class IndexedPost < ApplicationRecord
         query: query,
         using: {
           tsearch: {
-            dictionary: IndexedPost.to_dictionary(locale: locale),
+            dictionary: dictionary,
             tsvector_column: 'indexed_content'
           },
           trigram: {

app/models/post/indexable.rb

@@ -18,7 +18,8 @@ class Post
           indexed_post.layout = layout.name
           indexed_post.site_id = site.id
           indexed_post.path = path.basename
-          indexed_post.locale = IndexedPost.to_dictionary(locale: locale.value)
+          indexed_post.locale = locale.value
+          indexed_post.dictionary = IndexedPost.to_dictionary(locale: locale.value)
           indexed_post.title = title.value
           indexed_post.front_matter = indexable_front_matter
           indexed_post.content = indexable_content

db/migrate/20210507221120_add_dictionary_to_indexed_posts.rb

@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+# Para no estar calculando todo el tiempo el diccionario del idioma,
+# agregamos una columna más.
+class AddDictionaryToIndexedPosts < ActiveRecord::Migration[6.1]
+  LOCALES = {
+    'english' => 'en',
+    'spanish' => 'es'
+  }
+
+  def up
+    add_column :indexed_posts, :dictionary, :string
+
+    create_trigger(compatibility: 1).on(:indexed_posts).before(:insert, :update) do
+      "new.indexed_content := to_tsvector(('pg_catalog.' || new.dictionary)::regconfig, coalesce(new.title, '') || '\n' || coalesce(new.content,''));"
+    end
+
+    IndexedPost.find_each do |post|
+      locale = post.locale
+
+      post.update dictionary: locale, locale: LOCALES[locale]
+    end
+  end
+
+  def down
+    remove_column :indexed_posts, :locale
+    rename_column :indexed_posts, :dictionary, :locale
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_05_06_212356) do
+ActiveRecord::Schema.define(version: 2021_05_07_221120) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_trgm"
@@ -230,6 +230,7 @@ ActiveRecord::Schema.define(version: 2021_05_06_212356) do
     t.string "content", default: ""
     t.tsvector "indexed_content"
     t.integer "order", default: 0
+    t.string "dictionary"
     t.index ["front_matter"], name: "index_indexed_posts_on_front_matter", using: :gin
     t.index ["indexed_content"], name: "index_indexed_posts_on_indexed_content", using: :gin
     t.index ["layout"], name: "index_indexed_posts_on_layout"
@@ -360,21 +361,13 @@ ActiveRecord::Schema.define(version: 2021_05_06_212356) do
 
   add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
   add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
-  # no candidate create_trigger statement could be found, creating an adapter-specific one
-  execute(<<-SQL)
-CREATE OR REPLACE FUNCTION public.indexed_posts_before_insert_update_row_tr()
- RETURNS trigger
- LANGUAGE plpgsql
-AS $function$
-BEGIN
-    new.indexed_content := to_tsvector(('pg_catalog.' || new.locale)::regconfig, coalesce(new.title, '') || '
+  create_trigger("indexed_posts_before_insert_update_row_tr", :compatibility => 1).
+      on("indexed_posts").
+      before(:insert, :update) do
+    <<-SQL_ACTIONS
+new.indexed_content := to_tsvector(('pg_catalog.' || new.dictionary)::regconfig, coalesce(new.title, '') || '
 ' || coalesce(new.content,''));
-    RETURN NEW;
-END;
-$function$
-  SQL
-
-  # no candidate create_trigger statement could be found, creating an adapter-specific one
-  execute("CREATE TRIGGER indexed_posts_before_insert_update_row_tr BEFORE INSERT OR UPDATE ON \"indexed_posts\" FOR EACH ROW EXECUTE PROCEDURE indexed_posts_before_insert_update_row_tr()")
+    SQL_ACTIONS
+  end
 
 end