feature(attachments): вынос в гем блока с прикрепленными файлами

https://jira.railsc.ru/browse/ORDERS-567

app/assets/stylesheets/amazon_assets/file_item.scss

@@ -0,0 +1,14 @@
+@import './icons';
+@import './functions';
+
+.file-item {
+  display: inline-block; color: #333; font-size: 12px;
+  &.fi-mod-with-icon:before { content: ''; display: inline-block; vertical-align: middle; width: 20px; height: 20px; margin: 0 10px 0 0; background-size: contain !important; }
+  .fi-content { display: inline-block; vertical-align: middle; }
+  .fi-title { display: inline-block; max-width: 205px; vertical-align: middle; margin: 0 10px 0 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: #333; text-decoration: underline; }
+  .fi-size { display: inline-block; vertical-align: middle; color: #999; margin: 2px 0 0; }
+}
+@each $icon in $icons {
+  $icon-name: nth($icon, 1);
+  .file-item.fi-mod-with-icon.#{$icon-name}:before { content: get-icon-url($icon-name); }
+}

app/views/apress/amazon_assets/_file_item.html.haml

@@ -0,0 +1,13 @@
+:ruby
+  class_name = []
+  class_name << "#{local_assigns[:className]} #{file_ext_name(attachment.file_name)}"
+  class_name << 'fi-mod-with-icon' if local_assigns[:with_icon]
+
+%a.file-item{href: current_user.present? ? attachment.file.to_s : '#',
+             class: class_name,
+             download: true,
+             data: local_assigns[:data],
+             title: t('views.apress.amazon_assets.file_item.title')}
+  .fi-content>
+    .fi-title>= attachment.origin_file_name
+    .fi-size>= number_to_human_size(attachment.local_file_size).tr(' ', '')

config/locales/ru.yml

@@ -23,3 +23,5 @@ ru:
             required_field: 'Не может быть пустым'
           titles:
             detach: 'Удалить файл'
+        file_item:
+          title: 'Скачать файл'