ya que estaba, un poco de refactorización para no escribir tantas @

memoizamos site y post cuando podemos

app/controllers/posts_controller.rb

@@ -85,31 +85,24 @@ class PostsController < ApplicationController
   end
 
   def edit
-    @site = find_site
-    @post = @site.posts(lang: locale).find params[:id]
-
-    authorize @post
-
-    @locale = locale
-    breadcrumb @post.title.value, site_post_path(@site, @post, locale: locale), match: :exact
+    authorize post
+    breadcrumb post.title.value, site_post_path(site, post, locale: locale), match: :exact
+    breadcrumb 'posts.edit', ''
   end
 
   def update
-    @site = find_site
-    @post = @site.posts(lang: locale).find params[:id]
+    authorize post
 
-    authorize @post
-
-    service = PostService.new(site: @site,
-                              post: @post,
+    service = PostService.new(site: site,
+                              post: post,
                               usuarie: current_usuarie,
                               params: params)
 
     if service.update.persisted?
-      @site.touch
+      site.touch
       forget_content
 
-      redirect_to site_post_path(@site, @post)
+      redirect_to site_post_path(site, post)
     else
       render 'posts/edit'
     end
@@ -117,34 +110,30 @@ class PostsController < ApplicationController
 
   # Eliminar artículos
   def destroy
-    @site = find_site
-    @post = @site.posts(lang: locale).find params[:id]
+    authorize post
 
-    authorize @post
-
-    service = PostService.new(site: @site,
-                              post: @post,
+    service = PostService.new(site: site,
+                              post: post,
                               usuarie: current_usuarie,
                               params: params)
 
     # TODO: Notificar si se pudo o no
     service.destroy
-    @site.touch
-    redirect_to site_posts_path(@site)
+    site.touch
+    redirect_to site_posts_path(site)
   end
 
   # Reordenar los artículos
   def reorder
-    @site = find_site
-    authorize @site
+    authorize site
 
-    service = PostService.new(site: @site,
+    service = PostService.new(site: site,
                               usuarie: current_usuarie,
                               params: params)
 
     service.reorder
-    @site.touch
-    redirect_to site_posts_path(@site)
+    site.touch
+    redirect_to site_posts_path(site)
   end
 
   # Devuelve el idioma solicitado a través de un parámetro, validando
@@ -155,7 +144,7 @@ class PostsController < ApplicationController
   # solicite a le usuarie crear el nuevo idioma y que esto lo agregue al
   # _config.yml del sitio en lugar de mezclar idiomas.
   def locale
-    @site&.locales&.find(-> { I18n.locale }) do |l|
+    @locale ||= site&.locales&.find(-> { I18n.locale }) do |l|
       l.to_s == params[:locale]
     end
   end
@@ -165,4 +154,14 @@ class PostsController < ApplicationController
   def forget_content
     flash[:js] = { target: 'editor', action: 'forget-content', keys: (params[:storage_keys] || []).to_json }
   end
+
+  private
+
+  def site
+    @site ||= find_site
+  end
+
+  def post
+    @post ||= site.posts(lang: locale).find(params[:post_id] || params[:id])
+  end
 end

app/controllers/usuaries_controller.rb

@@ -14,8 +14,7 @@ class UsuariesController < ApplicationController
 
   # Mostrar todes les usuaries e invitades de un sitio
   def index
-    @site = find_site
-    site_usuarie = SiteUsuarie.new(@site, current_usuarie)
+    site_usuarie = SiteUsuarie.new(site, current_usuarie)
     authorize site_usuarie
 
     breadcrumb 'usuaries.index', ''
@@ -163,4 +162,8 @@ class UsuariesController < ApplicationController
       'invitade'
     end
   end
+
+  def site
+    @site ||= find_site
+  end
 end