Forms RubyonRails“保存时”的未定义方法“description”

我对rails比较陌生，这几天我一直在努力解决这个问题。如果你能看出我的错误，我将不胜感激

我收到了这个错误信息

 undefined method `description' for #<Invoicegeneric:0x000001054900b0>

 if @invoicegeneric.save   ==> error at this
    response = "Success"
  else
    response = "Error"

这是我的html

  <form id="modal-form" class="pure-form pure-form-stacked" 
        name="invoicegenericform" action="<%= addgenericitems_invoice_path(@invoice) %>" 
  method="post">
        <fieldset>
            <label for="po_id">PO</label>
            <select name="po_id" class="chzn-select">
            <% Purchaseorder.active.order(:sku).each do |p| %>
              <option value="<%= p.sku %>"><%= "#{p.sku}" %></option>
            <% end %>
            </select>
        </fieldset>
        <fieldset>
            <label for="sku_sj">SJ</label>
            <input name="sku_sj" type="text">
        </fieldset>
      <div class="modal-footer">
        <button class="pure-button" data-dismiss="modal" aria-hidden="true">Close</button>

        <input type="submit" class="pure-button pure-button-primary" value="Tambah"/>

    </div>
</form>

---

在我的表格中没有列名称说明

我们可以看到Invoicegeneric模型吗？此外，最好使用骆驼式案例分析模型。InvoiceGeneric在app/models/invoice_generic.rb中。是的，我找到了，问题出在我的InvoiceGeneric模型中。我给你一个描述。我删除了这个选项。它是有效的。谢谢@Deefour

  <form id="modal-form" class="pure-form pure-form-stacked" 
        name="invoicegenericform" action="<%= addgenericitems_invoice_path(@invoice) %>" 
  method="post">
        <fieldset>
            <label for="po_id">PO</label>
            <select name="po_id" class="chzn-select">
            <% Purchaseorder.active.order(:sku).each do |p| %>
              <option value="<%= p.sku %>"><%= "#{p.sku}" %></option>
            <% end %>
            </select>
        </fieldset>
        <fieldset>
            <label for="sku_sj">SJ</label>
            <input name="sku_sj" type="text">
        </fieldset>
      <div class="modal-footer">
        <button class="pure-button" data-dismiss="modal" aria-hidden="true">Close</button>

        <input type="submit" class="pure-button pure-button-primary" value="Tambah"/>

    </div>
</form>