Question

我正在尝试在rails 4中构建嵌套表单。我已经启动并运行了视图但是当我提交表单时，值不会保存到我的数据库中。我仔细阅读了以下答案并尝试在我的代码中复制它，但我仍然遇到同样的问题：

以下是我认为的相关代码：

查看：

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

<%= f.fields_for :amount_due do |ff| %>
 <div class="field">
  <%= ff.label :amount_due %><br>
  <%= ff.text_field :amount_due %>
 </div>

 <div class="field">
  <%= ff.label :invoice_id %><br>
  <%= ff.text_field :invoice_id %>
 </div>
<% end %>

invoices_controller：

def new
 @invoice = Invoice.new
 @invoice.amount_dues.build 
end

def invoice_params
  params.require(:invoice).permit(:imagefile, :user_id,
    :amount_dues_attributes => [:id, :amount_due, :invoice_id])
end

amount_due模型：

class AmountDue < ActiveRecord::Base
 belongs_to :invoice
 belongs_to :user
end

发票型号：

class Invoice < ActiveRecord::Base
 belongs_to :user
 validates :user_id, presence: true
 has_many :amount_dues
 accepts_nested_attributes_for :amount_dues
end

Answer 1

想出来。我没有复数：在我看来是amount_due。

Rails 4嵌套属性，表单不保存

1 个答案: