diff --git a/app/controllers/posts_controller.rb b/app/controllers/posts_controller.rb
index 5c49038..67872a7 100644
--- a/app/controllers/posts_controller.rb
+++ b/app/controllers/posts_controller.rb
@@ -53,7 +53,7 @@ class PostsController < ApplicationController
       :cover, :layout, :permalink, :objetivos,
       :duracion, :formato, :habilidades,
       conocimientos: [], sesiones_ejercicios_relacionados: [],
-      materiales_requeridos: [], lang: [],
+      materiales_requeridos: [], lang: {},
       tags: [], categories: [])
   end
 end
diff --git a/app/views/posts/_form.haml b/app/views/posts/_form.haml
index b83cb66..8d3020f 100644
--- a/app/views/posts/_form.haml
+++ b/app/views/posts/_form.haml
@@ -55,7 +55,7 @@
     %small.text-muted.form-text= t('posts.permalink_help')
   .form-group
     = label_tag 'post_layout', t('posts.layout')
-    = select_tag 'post[layout][]',
+    = select_tag 'post[layout]',
       options_for_select(@site.everything_of(:layout), @post.get_front_matter(:layout)),
       { class: 'form-control select2' }
     %small.text-muted.form-text= t('posts.layout_help')
@@ -66,13 +66,13 @@
     %small.text-muted.form-text= t('posts.objetivos_help')
   .form-group
     = label_tag 'post_habilidades', t('posts.habilidades')
-    = select_tag 'post[habilidades][]',
+    = select_tag 'post[habilidades]',
       options_for_select(@site.everything_of(:habilidades), @post.get_front_matter(:habilidades)),
       { class: 'form-control select2' }
     %small.text-muted.form-text= t('posts.habilidades_help')
   .form-group
     = label_tag 'post_formato', t('posts.formato')
-    = select_tag 'post[formato][]',
+    = select_tag 'post[formato]',
       options_for_select(@site.everything_of(:formato), @post.get_front_matter(:formato)),
       { class: 'form-control select2' }
     %small.text-muted.form-text= t('posts.formato_help')
@@ -94,6 +94,12 @@
       options_for_select(@site.everything_of(:materiales_requeridos), @post.get_front_matter(:materiales_requeridos)),
       { class: 'form-control select2', multiple: 'multiple' }
     %small.text-muted.form-text= t('posts.materiales_requeridos_help')
+  - %w[es en ar].each do |lang|
+    .form-group
+      = label_tag 'post_lang', t("posts.lang.#{lang}")
+      = text_field 'post', "lang[#{lang}]", value: @post.get_front_matter(:lang).dig(lang),
+        class: 'form-control'
+      %small.text-muted.form-text= t('posts.lang_help')
 
 :javascript
   $(document).on('turbolinks:load', function() {
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 0c4d718..a23713f 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -41,6 +41,11 @@ en:
     sesiones_ejercicios_relacionados_help: 'Select all related sessions/exercises'
     materiales_requeridos: 'Needed materials'
     materiales_requeridos_help: 'Select all materials needed for this session'
+    lang:
+      es: 'Slug for Spanish'
+      en: 'Slug for English'
+      ar: 'Slug for Arabic'
+    lang_help: 'Complete this field with the slug for the post in another language to associate them'
     logger:
       rm: 'Removed %{path}'
     errors:
diff --git a/config/locales/es.yml b/config/locales/es.yml
index 9f135d2..118ac3b 100644
--- a/config/locales/es.yml
+++ b/config/locales/es.yml
@@ -39,6 +39,11 @@ es:
     sesiones_ejercicios_relacionados_help: 'Elige todas las sesiones relacionadas con esta'
     materiales_requeridos: 'Materiales requeridos'
     materiales_requeridos_help: 'Materiales necesarios para esta sesión'
+    lang:
+      es: 'Slug castellano'
+      en: 'Slug en inglés'
+      ar: 'Slug en árabe'
+    lang_help: 'El mismo artículo en otro idioma, completa con su slug para poder saltar de uno a otro'
     logger:
       rm: 'Eliminado %{path}'
     errors: