模型如下：@H_301_3@

class Album < ActiveRecord::Base

  has_many :album_images
  has_many :images,:through => :album_images

  accepts_nested_attributes_for :images

end

class Image < ActiveRecord::Base

  has_many :album_images
  has_many :albums,:through => :album_images

  mount_uploader :filename,ImageUploader

  validates_presence_of :filename

end

风景：@H_301_3@

<%= semantic_form_for @album,:url => upload_path do |f| %>
    <%= f.inputs do %>
      <%= f.input :name,:label => 'Album title' %>
    <% end %>

    <%= f.input :images,:as => :file,:input_html => {:multiple => true} %>

    <%= f.buttons do %>
      <%= f.commit_button 'Upload' %>
    <% end %>
  <% end %>

当我使用文件字段：@H_301_3@

<%= f.input :images,:input_html => {:multiple => true} %>

我得到：@H_301_3@

<input id="album_images" multiple="multiple" name="album[images][]" type="file">

这似乎不是正确的,因为我想我想直接在对象上设置文件名,但我不知道这一点.当我尝试使用此字段上传时,传入的参数如下所示：@H_301_3@

"album"=>{"name"=>"2011-01-09","images"=>["IMG_0052.JPG","IMG_0053.JPG","IMG_0054.JPG","IMG_0055.JPG"]}

但是,我收到以下错误：@H_301_3@

ActiveRecord::AssociationTypeMismatch (Image(#2157004660) expected,got String(#2151988680)):

好的,那个错误可能是因为它刚刚收到一个文件名,而不是一个图像对象.所以我用于文件字段：@H_301_3@

<%= f.input :images,:input_html => {:multiple => true,:name => 'album[images][][filename]'} %>

Formtastic生成的@H_301_3@

<input id="album_images" multiple="multiple" name="album[images][][filename]" type="file">

传入的参数看起来像：@H_301_3@

"album"=>{"name"=>"2011-01-09","images"=>[{"filename"=>"IMG_0052.JPG"},{"filename"=>"IMG_0053.JPG"},{"filename"=>"IMG_0055.JPG"}]}

但是我得到这个错误：@H_301_3@

Image(#2153868680) expected,got ActiveSupport::HashWithIndifferentAccess(#2158892780)

那么在Rails中如何设置这个多文件输入归档映射呢？@H_301_3@

谢谢.@H_301_3@