没有“名称”方法错误，但我有一个方法

  <div class="field">
    <%= f.label :name %><br>
    <%= f.text_area :name %>
  </div>

  <div class="field">
    <%= f.label :content %><br>
    <%= f.text_area :content, :cols =>20, :rows => 20 %>
  </div>

  <div class="actions">
    <%= f.submit %>
  </div>

<%= f.text_area :name %> line is causing the error. When I remove it, it works fine.
  <div class="field">
    <%= f.label :name %><