无法同时引用多个资源库的资源

app/views/users/import_resources_to_homework.js.erb

@@ -1,13 +1,13 @@
 <% unless @attachments.empty?%>
-    <% @attachments.each_with_index do |attachment, i| %>
+    <% @attachments.each do |attachment| %>
     $("#attachments_fields").append(
-    '<span id="attachments_p<%= i %>">'+
-    '<%= text_field_tag("attachments[p#{i}][filename]", attachment.filename, :class => "filename link_file", :readonly=>"readonly")%>'+
-    '<%= text_field_tag("attachments[p#{i}][description]", attachment.description, :maxlength => 254, :placeholder => l(:label_optional_description), :class => "description", :style=>"display: inline-block;") %>'+
+    '<span id="attachments_p<%= attachment.id %>">'+
+    '<%= text_field_tag("attachments[p#{attachment.id}][filename]", attachment.filename, :class => "filename link_file", :readonly=>"readonly")%>'+
+    '<%= text_field_tag("attachments[p#{attachment.id}][description]", attachment.description, :maxlength => 254, :placeholder => l(:label_optional_description), :class => "description", :style=>"display: inline-block;") %>'+
         '<span class="ispublic-label"><%= l(:field_is_public)%>:</span>'+
-    '<%= check_box_tag("attachments[p#{i}][is_public_checkbox]", attachment.is_public,attachment.is_public == 1 ? true : false,:class => "is_public")%>'+
-    '<%= link_to("&nbsp;".html_safe, attachment_path(attachment, :attachment_id => "p#{i}", :format => "js"), :method => "delete", :remote => true, :class => "remove-upload") unless attachment.id.nil? %>'+
-    '<%= hidden_field_tag "attachments[p#{i}][token]", "#{attachment.token}" %>'+
+    '<%= check_box_tag("attachments[p#{attachment.id}][is_public_checkbox]", attachment.is_public,attachment.is_public == 1 ? true : false,:class => "is_public")%>'+
+    '<%= link_to("&nbsp;".html_safe, attachment_path(attachment, :attachment_id => "p#{attachment.id}", :format => "js"), :method => "delete", :remote => true, :class => "remove-upload") unless attachment.id.nil? %>'+
+    '<%= hidden_field_tag "attachments[p#{attachment.id}][token]", "#{attachment.token}" %>'+
     '</span>'+
     '<div class="cl"></div>')