1

提交嵌套对象表单时,我无法让它拒绝无效的子对象,因为 reject_if proc 没有看到 Paperclip 属性。

以下是我的模型和表格的相关部分:

class Stage < ActiveRecord::Base
  has_and_belongs_to_many :assets, :uniq => true
  accepts_nested_attributes_for :assets, :reject_if => lambda { |attrs| attrs['asset'] }

  ...
end

class Asset < ActiveRecord::Base
  has_attached_file :asset, :path => "#{Rails.root}/public/:attachment/:id/:style/:basename.:extension",
                             :url => ":attachment/:id/:style/:basename.:extension"
  validates_attachment_presence :asset
 end

 - form_for [@campaign, @stage], :html => {:multipart => true} do |f|
 ....
   - f.fields_for :assets do |asset_form|
     - field_set_tag do
       - if asset_form.object.new_record?
         %h4 New Asset
       %p
         = asset_form.label :asset, "File"
         %br
         = asset_form.file_field :asset
       %p
         = asset_form.label :identifier
         %br
         = asset_form.text_field :identifier

我在 reject_if 部分放了一个调试器:

(rdb:1) p attrs
{"identifier"=>""}

我认为这是因为它只查看列属性,但事实并非如此,正如我通过向 Asset 添加 attr_accessor 发现的那样

p attrs
{"misc_attr"=>"", "identifier"=>""}

我可以继续进行奇怪的来龙去脉,但我想把它拿出来看看谁以前遇到过这个问题。

4

1 回答 1

0

我不知道这是否是重点,但 Asset 类中不应该有一行声明与 Stage 类的关联,例如:

    class Asset < ActiveRecord::Base
    has_and_belongs_to_many :stages

??

于 2009-09-11T14:02:14.443 回答