do not show units fields in receive edit order article screen

app/views/order_articles/_edit.html.haml

@@ -3,6 +3,7 @@
     = link_to t('ui.marks.close').html_safe, '#', class: 'close', data: {dismiss: 'modal'}
     %h3= t '.title'
   .modal-body
+    - unless params[:without_units]
       .fold-line
         = form.input :units_to_order, label: 'Amount ordered', hint: '', input_html: {class: 'input-nano'}
         -#= form.input :units_billed, label: 'invoice', input_html: {class: 'input-nano'}

app/views/orders/_edit_amount.html.haml

@@ -24,7 +24,7 @@
       / TODO add almost invisible text_field for entering single units
     %td.units_delta
     %td
-      = link_to t('ui.edit'), edit_order_order_article_path(order_article.order, order_article), remote: true, class: 'btn btn-small'
+      = link_to t('ui.edit'), edit_order_order_article_path(order_article.order, order_article, without_units: true), remote: true, class: 'btn btn-small'
       - if order_article.result_manually_changed?
         = button_tag nil, class: 'btn btn-small unlocker', title: t('.locked_to_protect_unlock_button') do
           %i.icon-unlock