app/helpers/admin/seminars_field_helper.rb

@@ -182,6 +182,19 @@ module Admin::SeminarsFieldHelper
       end  
   end
 
+  def render_file_field
+      a = control_group_wrapper_for_sm do |key,value|
+        add_more_blank = can_add_more ? "[]" : ""
+        key_field = can_muti_lang_input? ? "[#{key}]" : ""
+        field_name = [get_field_name_base,add_more_blank,key_field].join
+        file_required =@require ? 'required="required"' : ''
+        "<div class=\"file-selector\"><label class=\"ui-button\">
+                                <input style=\"position: absolute;width:0.1em;opacity: 0;padding: 0;border: 0;opacity: 0;left: 50%;top: 0;\" class=\"upload\" name=\"#{field_name}\" #{file_required} type=\"file\" />
+                                <i class=\"fa fa-file\"></i> #{I18n.t('file.upload')}
+                                </label><div class=\"filename\"></div></div>#{value}".html_safe
+      end  
+  end
+
   def date_is_range?
     is_range =  "false"
     data = get_data