- content_for :javascript do
  :javascript
    $(function() {
      $('#stock_changes').on('touchclick', '.destroy_stock_change', function() {
        $(this).prev('input').val('1'); // check for destruction

        var stock_change = $(this).closest('tr');
        stock_change.hide(); // do not remove (to ensure destruction)
        stock_change.removeAttr('id'); // remove id to allow re-adding
        mark_article_for_delivery( stock_change.data('id') );
        return false;
      });

      $('#stock_changes').on('touchclick', '.remove_new_stock_change', function() {
        var stock_change = $(this).closest('tr');
        stock_change.remove();
        mark_article_for_delivery( stock_change.data('id') );
        return false;
      })

      $('#new_stock_article').removeAttr('disabled').select2({
        tags: true,
        placeholder: '#{t '.create_stock_article'}',
        data: #{raw articles_for_select2(@supplier.articles).to_json},
        createTag: function(data) {
          return {
            id: 'new',
            name: data.term, // store for ajax request
            text: data.term + ' (#{t '.create_from_blank'})'
          };
        }
      }).on('select2:select', function(e) {
        var selectedArticle = e.params.data;
        if (!selectedArticle) {
          return false;
        }
        if('new' == selectedArticle.id) {
          $.ajax({
            url: '#{new_stock_article_path}',
            type: 'get',
            data: {stock_article: {name: selectedArticle.name, supplier_id: #{@supplier.id}}},
            contentType: 'application/json; charset=UTF-8'
          });
          $('#new_stock_article').val('').trigger('change');
          return true;
        }
        if('' != selectedArticle.id) {
          $.ajax({
            url: '#{derive_stock_articles_path}',
            type: 'get',
            data: {old_article_id: selectedArticle.id},
            contentType: 'application/json; charset=UTF-8'
          });
          $('#new_stock_article').val('').trigger('change');
          return true;
        }
      });

      // Subscribe to database changes.
      // See publish/subscribe design pattern in /doc.
      $(document).on('StockArticle#create', function(e) {
        $.ajax({
          url: '#{form_on_stock_article_create_supplier_deliveries_path(@supplier)}',
          type: 'get',
          data: {id: e.stock_article_id},
          contentType: 'application/json; charset=UTF-8'
        });
      });

      $(document).on('StockArticle#update', function(e) {
        $.ajax({
          url: '#{form_on_stock_article_update_supplier_deliveries_path(@supplier)}',
          type: 'get',
          data: {id: e.stock_article_id},
          contentType: 'application/json; charset=UTF-8'
        });
      });
    });

    function mark_article_for_delivery(stock_article_id) {
      var articleTr = $('#stock_article_' + stock_article_id);
      if( is_article_available_for_delivery(stock_article_id) ) {
        articleTr.removeClass('unavailable');
        $('.button-add-stock-change', articleTr).removeAttr('disabled');
      }
      else {
        articleTr.addClass('unavailable');
        $('.button-add-stock-change', articleTr).attr('disabled', 'disabled');
      }
    }
    function is_article_available_for_delivery(stock_article_id) {
      return ( 0 == $('#stock_change_stock_article_' + stock_article_id).length );
    }

= simple_form_for [@supplier, @delivery], validate: true do |f|
  = f.error_notification
  = base_errors f.object
  = f.association :supplier, :as => :hidden

  %h2= t '.title_select_stock_articles'
  %table#stock_articles_for_adding.table.table-hover.stupidtable
    %thead
      %tr
        %th.default-sort{:data => {:sort => 'string'}}= Article.model_name.human
        %th= heading_helper StockArticle, :price
        %th= heading_helper StockArticle, :unit
        %th= heading_helper StockArticle, :article_category
        %th= t 'ui.actions'
    %tfoot
      %tr
        %th{:colspan => 5}
          - if @supplier.articles.empty?
            = link_to t('.create_stock_article'), new_stock_article_path, :remote => true, :class => 'btn'
          - else
            %select#new_stock_article{:style => 'width: 500px;'}
    %tbody
      - for article in articles_for_table(@supplier.stock_articles)
        = render :partial => 'stock_article_for_adding', :locals => {:article => article}

  %h2= t '.title_fill_quantities'
  %table.table#stock_changes.stupidtable
    %thead
      %tr
        %th.default-sort{:data => {:sort => 'string'}}= Article.model_name.human
        %th= heading_helper StockArticle, :price
        %th= heading_helper StockArticle, :unit
        %th= heading_helper GroupOrderArticle, :quantity  # quantity to order, although technically this will be a StockChange
        %th= t 'ui.actions'
    %tbody
      = f.simple_fields_for :stock_changes do |stock_change_form|
        = render :partial => 'stock_change_fields', :locals => {:f => stock_change_form}

  %h2= t '.title_finish_delivery'
  = f.input :date, as: :date_picker
  = f.input :note, input_html: {size: '35x4'}
  .form-actions
    = f.submit class: 'btn btn-primary'
    = link_to t('ui.or_cancel'), supplier_deliveries_path(@supplier)