我正在关注railscasts episode 381，试图通过carrierwave gem＆amp; amp; jQuery文件上传。
我的应用程序适用于大学项目＆amp;设有徒步旅行车模型，其中有很多＆amp;接受 pics模型的嵌套属性。
将file_field的多个选项设置为true＆amp;硬编码输入名称属性，即<%= form.file_field :image, multiple: true, name: "pic[image]" %>，载波停止工作，它不像以前那样上传单个文件。
这可能与使用嵌套表单有关吗？我也试过在我的应用中实现这个tutorial而没有任何成功。
我也尝试过将这两种形式分成多部分而不仅仅是父形式＆amp;删除我正在使用的simple_form gem。
我也尝试删除部分＆amp;将嵌套表单放在本地，但没有帮助。也许这与我如何将file_field设置为多个有关，因为这是问题的开始。
非常感谢任何建议或替代方法
class Pic < ActiveRecord::Base
belongs_to :hikingtrail
attr_accessible :img_name, :image, :remote_image_url
mount_uploader :image, ImageUploader
end
＆安培;
class Hikingtrail < ActiveRecord::Base
attr_accessible :description,
:duration_hours,
:duration_mins,
:meta_description,
:name,
:looped,
:pics_attributes
validates :name, :presence => true
has_many :pics
accepts_nested_attributes_for :pics, :allow_destroy => :true,
:reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? } }
end
<% @hikingtrail.pics.build %>
<%= simple_form_for @hikingtrail, :html => {:multipart => true} do |f| %>
<%= f.input :name %>
<%= f.input :description, :input_html => { :cols => 10, :rows => 3 } %>
<%= f.input :looped %>
<h2>Images</h2>
<%= render :partial => 'pics/form',
:locals => {:form => f} %>
<div class="form-actions">
<%= f.submit nil, :class => 'btn btn-primary' %>
<%= link_to t('.cancel', :default => t("helpers.links.cancel")),
hikingtrails_path, :class => 'btn' %>
</div>
<% end %>
<%= form.fields_for :pics do |pic_form| %>
<div class="field">
<% unless pic_form.object.nil? || pic_form.object.new_record? %>
<%= image_tag pic_form.object.image_url(:thumb).to_s %>
<% end %>
<% if pic_form.object.nil? || pic_form.object.new_record? %>
<%= pic_form.file_field :image, multiple: true, name: "pic[image]" %>
<% end %>
</div>
<% unless pic_form.object.nil? || pic_form.object.new_record? %>
<div class="field">
<%= pic_form.label :_destroy, 'Remove:' %>
<%= pic_form.check_box :_destroy %>
</div>
<% end %>
<% end %>
Started PUT "/hikingtrails/7" for 127.0.0.1 at 2013-03-24 13:55:17 +0000
Processing by HikingtrailsController#update as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"trGCi0Gz+CNRmwAoktcYmeplEKW5bZBtozkduNIXvcI=", "hikingtrail"=>{"name"=>"Dunran Woods", "meta_description"=>"Nice walk through the woods", "description"=>"Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.", "looped"=>"0", "duration_hours"=>"9", "duration_mins"=>"45"}, "pic"=>{"image"=>#<ActionDispatch::Http::UploadedFile:0x007f288085cc08 @original_filename="spink_sleepers.jpg", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"pic[image]\"; filename=\"spink_sleepers.jpg\"\r\nContent-Type: image/jpeg\r\n", @tempfile=#<File:/tmp/RackMultipart20130324-7791-19ma2cb>>}, "commit"=>"Update Hikingtrail", "id"=>"7"}
Hikingtrail Load (3.7ms) SELECT "hikingtrails".* FROM "hikingtrails" WHERE "hikingtrails"."id" = $1 LIMIT 1 [["id", "7"]]
(0.1ms) BEGIN
(0.1ms) COMMIT
Redirected to http://0.0.0.0:3000/hikingtrails/7
Completed 302 Found in 6ms (ActiveRecord: 3.8ms)
Started GET "/hikingtrails/7" for 127.0.0.1 at 2013-03-24 13:55:17 +0000
Processing by HikingtrailsController#show as HTML
Parameters: {"id"=>"7"}
Hikingtrail Load (3.4ms) SELECT "hikingtrails".* FROM "hikingtrails" WHERE "hikingtrails"."id" = $1 LIMIT 1 [["id", "7"]]
Pic Load (0.2ms) SELECT "pics".* FROM "pics" WHERE "pics"."hikingtrail_id" = 7
Rendered collection (0.0ms)
Rendered hikingtrails/show.html.erb within layouts/application (2.6ms)
Rendered layouts/_navbar.html.erb (0.9ms)
Rendered layouts/_footer.html.erb (0.3ms)
Completed 200 OK in 41ms (Views: 36.2ms | ActiveRecord: 3.7ms)
Started GET "/assets/application.css?body=1" for 127.0.0.1 at 2013-03-24 13:55:17 +0000
Served asset /application.css - 304 Not Modified (0ms)
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Started GET "/assets/bootstrap_and_overrides.css?body=1" for 127.0.0.1 at 2013-03-24 13:55:17 +0000
Served asset /bootstrap_and_overrides.css - 304 Not Modified (0ms)
[2013-03-24 13:55:17] WARN Could not determine content-length of response body. Set content-length of the response or set Response#chunked = true
Started GET "/assets/jquery-fileupload/vendor/jquery.ui.widget.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:17 +0000
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Started GET "/assets/jquery-fileupload/basic.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:17 +0000
Served asset /jquery-fileupload/basic.js - 304 Not Modified (0ms)
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Started GET "/assets/twitter/bootstrap/bootstrap-modal.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:17 +0000
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Started GET "/assets/twitter/bootstrap/bootstrap-alert.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:17 +0000
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Started GET "/assets/twitter/bootstrap/bootstrap-dropdown.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:17 +0000
Served asset /twitter/bootstrap/bootstrap-dropdown.js - 304 Not Modified (8ms)
[2013-03-24 13:55:18] WARN Could not determine content-length of response body. Set content-length of the response or set Response#chunked = true
Started GET "/assets/twitter/bootstrap/bootstrap-tab.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:18 +0000
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Started GET "/assets/twitter/bootstrap/bootstrap-scrollspy.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:18 +0000
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Started GET "/assets/twitter/bootstrap/bootstrap-popover.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:18 +0000
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Started GET "/assets/twitter/bootstrap/bootstrap-tooltip.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:18 +0000
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Started GET "/assets/twitter/bootstrap/bootstrap-button.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:18 +0000
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Started GET "/assets/twitter/bootstrap/bootstrap-carousel.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:18 +0000
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Started GET "/assets/twitter/bootstrap/bootstrap-affix.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:18 +0000
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[2013-03-24 13:55:18] WARN Could not determine content-length of response body. Set content-length of the response or set Response#chunked = true
Started GET "/assets/twitter/bootstrap/bootstrap-collapse.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:18 +0000
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[2013-03-24 13:55:18] WARN Could not determine content-length of response body. Set content-length of the response or set Response#chunked = true
Started GET "/assets/twitter/bootstrap/bootstrap-typeahead.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:18 +0000
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Started GET "/assets/pics.js?body=1" for 127.0.0.1 at 2013-03-24 13:55:18 +0000
Served asset /pics.js - 304 Not Modified (0ms)
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Served asset /hikingtrails.js - 304 Not Modified (0ms)
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答案 0 :(得分：2)
我花了很长时间尝试实现类似的东西。也许我对这篇文章的回答可能对你有帮助。
答案 1 :(得分：0)
我从未找到使用jQuery文件上传以嵌套形式上传多个图像的解决方案。经过我所做的所有研究后，我认为它不具备可能性。
最后我跟着railscast #196＆amp;能够使用carrierwave＆amp ;;一次上传多个图像。的JavaScript。