模态表格无法正常工作

Question

我的模态正在工作（意味着当我点击按钮时出现）但表格没有出现，我在索引动作中有这个模态，所以我添加了<% @entries.each do |entry| %>而没有它我是{{1} } model_name'对于NilClass：Class，有什么建议吗？

aving undefined method

time_table_entries_controller.rb

<%= link_to "Assign", "#saturday-one", :class => "btn btn-primary", "data-toggle" => "modal" %>
<div class="modal hide fade" id="saturday-one">
  <div class="modal-header">
    <h3 id="myModalLabel">Time Table</h3>
  </div>
  <div class="modal-body">
    <% @entries.each do |entry| %>
    <%= simple_form_for(entry) do |f| %>
    <%= f.association :subject, as: :select, label: 'Select Subject' %>
    <%= f.association :employee, as: :select, label: 'Assign Employee' %>
    <%= f.submit %>
    <% end %>
    <% end %>
  </div>
  <div class="modal-footer">
    <button aria-hidden="true" class="btn btn-info" data-dismiss="modal">Done</button>
  </div>
</div>