2009-08-21 93 views
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。使用回形针嵌套对象表单 - 回形针attrs被reject_if忽略

这里是我的模型的相关部分&形式:

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 

我把一个调试器在reject_if部分:

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

我认为这是因为它仅着眼于那些属性列但这不是,因为我发现通过添加一个attr_accessor资产

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

我可以继续与奇怪的插入&出口,但我想得到这一点,看看谁有这个问题之前。

回答

0

我不知道这是不是点,而是shouldn't出现在资产类声明联想到舞台类这样一行:

class Asset < ActiveRecord::Base 
    has_and_belongs_to_many :stages