Question

我目前正在使用rails 3.2.13和ruby 1.9.3。

我正在尝试通过文件附件字段上传多个图像附件。到目前为止，我可以上传单个文件并成功显示图像。

_form.html.erb上有 add_object_link 功能可以创建其他文件附件字段，但不会在触发时显示或创建。

模型/ album.rb

    attr_accessible :name, :photos_attributes, :gcategory_id
    has_many :photos, :dependent => :destroy
    accepts_nested_attributes_for :photos, :allow_destroy => true

模型/ photo.rb

    belongs_to :album

查看/专辑/ _form.html.erb

    <%= render :partial => 'layouts/error_messages', :locals => { :c => @album } %>
    <p>
      <%= f.label :gcategory_id %>
      <br />
      <%= f.collection_select :gcategory_id, Gcategory.all, :id, :name %>
    <p>
    <p>
      <%= f.label :name %><br />
      <%= f.text_field :name, { :class => 'title' } %>
    </p>
    <div class="album_photos">
      <%= render :partial => 'album_photo', :collection => @album.photos %>
    </div>
    <div id="photos">
      <% if @album.new_record? %>
        <%= render :partial => 'photo', :locals => { :form => f, :photo =>          @album.photos.build } %>
      <% else %>
        <% @album.photos.each do |photo| %>
            <%= image_tag photo.data.url(:small) %>
        <% end %>
     <% end %>
    </div>
    <%= add_object_link("New Photo", f, @album.photos.build, "photo", "#photos") %>
   <p>
     <%= f.submit %>
   </p>

查看/专辑/ _photo.html.erb

   <div class="photo">
      <p>
        <%= form.fields_for :photos, photo, :multiple => true, :child_index =>  (photo.new_record? ? "index_to_replace_with_js" : nil) do |photo_form| %>    
          <%= photo_form.file_field :data %>
          <%= link_to_function "delete", "remove_field($(this), ('.photo'))" %><br/>
        <% end %>
      </p>
    </div>

查看/专辑/ _album）photo.html.erb

    <% unless album_photo.new_record? %>
      <%= image_tag(album_photo.data.url(:small),:multiple => true, :alt => '') %>
      <%= check_box_tag "photo_ids[]", album_photo.id %>
    <% end rescue nil %>

助手/ albums_helper.rb

    def add_object_link(name, form, object, partial, where)
  html = render(:partial => partial, :locals => { :form => form}, :object => object)
  link_to_function name, %{
    var new_object_id = new Date().getTime() ;
    var html = jQuery(#{js html}.replace(/index_to_replace_with_js/g, new_object_id)).hide();
    html.appendTo(jQuery("#{where}")).slideDown('slow');
  }
end

def js(data)
  if data.respond_to? :to_json
    data.to_json
  else
    data.inspect.to_json
  end
end

控制器/ albums_controller.rb

      def new
        @album = Album.new
        3.times { @album.photos.build }
        respond_to do |format|
          format.html # new.html.erb
        format.xml  { render :xml => @album }
       end
     end

没有显示错误消息，并且能够上传单个文件。我找不到表单中的add_object_link没有创建其他文件附件字段的原因。

提前感谢您的帮助。

Rails 3.2.13通过jQuery添加字段无法正常工作

0 个答案: