foodsoft/app/views/articles/_form.html.haml

= simple_form_for [@supplier, @article], :validate => true, :remote => true do |f|
  = f.hidden_field :shared_updated_on
  = f.hidden_field :supplier_id
  .modal-header
    = link_to t('ui.marks.close').html_safe, '#', class: 'close', data: {dismiss: 'modal'}
    %h3= @article.new_record? ? t('.title_new') : t('.title_edit')
  .modal-body
    = f.input :availability
    = f.input :name
    .twocol
      = f.input :unit_quantity, label: Article.human_attribute_name(:unit),
          input_html: {class: 'input-mini', title: Article.human_attribute_name(:unit_quantity)}
      = f.input :unit, label: '×'.html_safe,
           input_html: {class: 'input-mini', title: Article.human_attribute_name(:unit)}

    = f.input :note
    = f.association :article_category
    / TODO labels

    .twocol
      = f.input :price do
        .input-prepend
          %span.add-on= t 'number.currency.format.unit'
          = f.input_field :price, class: 'input-mini'
      = f.input :tax do
        .input-append
          = f.input_field :tax, class: 'input-mini'
          %span.add-on %
      = f.input :deposit do
        .input-prepend
          %span.add-on= t 'number.currency.format.unit'
          = f.input_field :deposit, class: 'input-mini'
      .control-group
        %label.control-label{for: 'article_fc_price'}
          = Article.human_attribute_name(:fc_price)
        .controls.control-text#article_fc_price
          = number_to_currency(@article.fc_price) rescue nil

    = f.input :origin
    = f.input :manufacturer
    = f.input :order_number
  .modal-footer
    = link_to t('ui.close'), '#', class: 'btn', data: {dismiss: 'modal'}
    = f.submit class: 'btn btn-primary'

:javascript
  var form = $('form.edit_article, form.new_article');
  $('#article_price, #article_tax, #article_deposit', form).on('change keyup', function() {
    var price = parseFloat($('#article_price', form).val());
    var tax = parseFloat($('#article_tax', form).val());
    var deposit = parseFloat($('#article_deposit', form).val());
    // Article#gross_price and Article#fc_price
    var gross_price = (price + deposit) * (tax / 100 + 1);
    var fc_price = gross_price  * (#{FoodsoftConfig[:price_markup].to_f} / 100 + 1);
    $('#article_fc_price').html($.isNumeric(fc_price) ? I18n.l("currency", fc_price) : '…');
  });