我正在关注railscasts 第 381 集，试图通过carrierwave gem 和 jQuery File 上传将多个图像上传到我的应用程序。
我的应用程序用于一个大学项目，并设置了一个远足径模型，该模型具有许多并接受图片模型的嵌套属性。
在我将 file_field 的 multiple 选项设置为 true 并硬编码输入名称属性后，即<%= form.file_field :image, multiple: true, name: "pic[image]" %>carrierwave 停止工作，它不会像以前那样上传单个文件。
这可能与使用嵌套表单有关吗？我也尝试将本教程实施到我的应用程序中，但没有任何成功。
我也尝试过将两种表单都制作成多部分，而不仅仅是父表单并删除我正在使用的 simple_form gem。
我也尝试过删除部分表单并将嵌套表单放在本地，但这没有帮助。也许这与我如何将 file_field 设置为多个有关，因为这是问题开始的地方。
任何建议或替代方法将不胜感激
楷模
class Pic < ActiveRecord::Base
belongs_to :hikingtrail
attr_accessible :img_name, :image, :remote_image_url
mount_uploader :image, ImageUploader
end
&
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
意见
徒步旅行/_form.html.erb
<% @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 %>
图片/_form.html.erb
<%= 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 %>
终端输出
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)
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