reordenar los articulos al soltar

app/assets/javascripts/drag.js

@@ -3,5 +3,8 @@ $(document).on('turbolinks:load', function() {
     mode: 'row',
     onlyBody: true,
     dragHandler: '.handle'
+  }).on('drop', function(from, to, el, mode) {
+    // Al soltar, reordenamos toda la tabla
+    $('.post_order').val(function(i,v) { return i; });
   });
 });

app/views/posts/index.haml

@@ -19,9 +19,10 @@
 .row
   .col
     - if @posts.present?
+      = form_tag site_reorder_posts_path, method: :post do
         %table.table.table-condensed.table-striped.table-draggable
           %tbody
-          - @posts.each do |post|
+            - @posts.each_with_index do |post, i|
               - if @category
                 -# saltearse el post a menos que esté en la categoría
                 -# por la que estamos filtrando
@@ -31,6 +32,8 @@
               %tr
                 %td
                   = fa_icon 'arrows-v', class: 'handle'
+                  = text_field 'posts[order]', i, value: post.order || i, class: 'post_order'
+
                 %td{class: direction}
                   = link_to post.title, site_post_path(@site, post, lang: @lang)
                   %br

config/routes.rb

@@ -16,5 +16,6 @@ Rails.application.routes.draw do
 
     post 'enqueue', to: 'sites#enqueue'
     get 'build_log', to: 'sites#build_log'
+    post 'reorder_posts', to: 'sites#reorder_posts'
   end
 end