我在用户可下载文件方面遇到了一个奇怪的问题,文件下载正常,但 Controller 操作中的其他代码执行了两次。我正在使用 CarrierWave,它安装在 .file 的文档模型上。
我希望用户能够单击此链接下载文件:
<%= link_to document.file.file.filename, document_path(document) %>
这是我的 Controller 的样子:
def show
document = Document.find(params[:id])
# Track this download
CourseDownload.create(course: document.course, user: current_user)
# Download the file
send_file 'public' + document.file.url.to_s
end
当我单击链接时,文件下载,但创建了 2 个 CourseDownload 记录。在日志中,GET 请求似乎发生了两次:
Started GET "/documents/1" for 127.0.0.1 at 2014-04-17 18:12:47 -0400
Processing by DocumentsController#show as HTML
Parameters: {"id"=>"1"}
Document Load (0.2ms) SELECT "documents".* FROM "documents" WHERE "documents"."id" = ? LIMIT 1 [["id", "1"]]
User Load (0.2ms) SELECT "users".* FROM "users" WHERE "users"."remember_token" = 'xxx' LIMIT 1
CACHE (0.0ms) SELECT "documents".* FROM "documents" WHERE "documents"."id" = ? LIMIT 1 [["id", "1"]]
public/uploads/document/file/1/bootstrap-3.0.0.zip
Sent file public/uploads/document/file/1/bootstrap-3.0.0.zip (0.1ms)
Completed 200 OK in 7ms (ActiveRecord: 0.4ms)
Started GET "/documents/1" for 127.0.0.1 at 2014-04-17 18:12:47 -0400
Processing by DocumentsController#show as HTML
Parameters: {"id"=>"1"}
Document Load (0.2ms) SELECT "documents".* FROM "documents" WHERE "documents"."id" = ? LIMIT 1 [["id", "1"]]
User Load (0.1ms) SELECT "users".* FROM "users" WHERE "users"."remember_token" = 'xxx' LIMIT 1
CACHE (0.0ms) SELECT "documents".* FROM "documents" WHERE "documents"."id" = ? LIMIT 1 [["id", "1"]]
public/uploads/document/file/1/bootstrap-3.0.0.zip
Sent file public/uploads/document/file/1/bootstrap-3.0.0.zip (0.1ms)
Completed 200 OK in 5ms (ActiveRecord: 0.3ms)
知道我做错了什么吗?
谢谢!
最佳答案
问题最终是由 turbolinks 引起的明白了。
解决方式:
<%= link_to document.file.file.filename, document_path(document), 'data-no-turbolink' => true %>
关于ruby-on-rails - Ruby on Rails send_file, Controller 操作中的代码运行两次,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23144584/