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我有一个模型，“更新”has_many“资产”。资产具有has_attached_file：资产，使用回形针。另外，非回形针属性忽略更新模型时通过accept_nested_attributes_for
我可以通过我的更新表单（使用fields_for）成功创建多个资产，但在编辑更新时，我无法更新资产上名为“sort_order”的附加非Paperclip属性。新值已发布，但该对象似乎没有更新。
型号/ asset.rb
...
belongs_to :update
...
型号/ update.rb
has_many :assets, :dependent => :destroy
...
accepts_nested_attributes_for :assets, :allow_destroy => true
attr_accessible
。
的意见/更新/ _form.html.erb
<ul class="existing-images">
<%= f.fields_for :assets do |a| %>
<% unless a.object.new_record? %>
<li>
<%= link_to image_tag(a.object.asset.url(:small)), a.object.asset.url(:original) %>
<%= a.check_box :_destroy %>
<%= a.label :_destroy %>
<%= a.text_field :sort_order %>
<%= a.label :sort_order %>
</li>
<% end %>
<% end %>
</ul>
在上面的a.text_field :sort_order领域，出现了资产的默认排序顺序，但不能更新。
输入到该字段的新值被发送作为每日志：
Parameters: {"utf8"=>"✓", "authenticity_token"=>"2IUei4WR7fRpsM0TKD3Yk8u5FlYv2FDszzjJc3y4eG8=", "update"=>{"year"=>"2011", "week"=>"39", "title"=>"A new piece of work", "content"=>"", "assets_attributes"=>{"3"=>{"_destroy"=>"0", "sort_order"=>"1", "id"=>"1"}, "4"=>{"_destroy"=>"0", **"sort_order"=>"20"**, "id"=>"2"}}, "video_url"=>"", "quote"=>"", "allow_reactions"=>"1", "is_published"=>"1", "allow_public_feed"=>"0"}, "id"=>"1"}
User Load (0.2ms) SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
Update Load (0.2ms) SELECT "updates".* FROM "updates" WHERE "updates"."id" = ? LIMIT 1 [["id", "1"]]
Asset Load (0.4ms) SELECT "assets".* FROM "assets" WHERE "assets"."update_id" = 1 AND "assets"."id" IN (1, 2) ORDER BY assets.sort_order
(0.1ms) SELECT 1 FROM "updates" WHERE ("updates"."update_type_id" = 1 AND "updates"."id" != 1 AND "updates"."year" = 2011 AND "updates"."week" = 39 AND "updates"."user_id" = 1) LIMIT 1
Update Load (0.1ms) SELECT "updates".* FROM "updates" WHERE "updates"."id" = 1 LIMIT 1
[paperclip] Saving attachments.
（“SORT_ORDER” =>“20”是新的值），但该值不被保存。
尽管_destroy复选框按预期工作，也是如此。
希望这是足够的信息;如果任何人都可以帮助，我会很感激！