我在将CSV文件上传到Heroku并进行处理时遇到了问题。它在我的本地环境中工作正常。请注意,我不需要在Heroku上保存文件,只需在请求期间访问它,以便将其转换为字符串进行处理并导入数据库。
我想做的是:
控制器代码:
def create
@account = Account.find(params[:report][:account_id])
@file = params[:report][:file].read
# logger.info file.inspect
case @account.provider
when "Microsoft AdCenter" then @file.gsub!(/\A(.*)\n\n/im, "")
when "Google AdWords" then @file.gsub!(/\A(.*)\n/i, "")
else
raise "Invalid PPC report format"
end
end
这是堆栈跟踪:
Processing ImportController#create (for XX.182.6.XXX at 2010-09-11 09:19:01) [POST]
Parameters: {"commit"=>"Upload", "action"=>"create", "authenticity_token"=>"XXXXXwoFpvRO3vN8XVXRDg8rikFsj2TFTW7mrcTgg=", "controller"=>"import", "report"=>{"account_id"=>"1", "file"=>#<File:/home/slugs/126077_0657264_9a92/mnt/tmp/RackMultipart.9845.0>}}
NoMethodError (private method `gsub!' called for #<Tempfile:0x2b8ccb63ece0>):
/usr/local/lib/ruby/1.8/delegate.rb:270:in `method_missing'
app/controllers/import_controller.rb:15:in `create'
warden (0.10.7) lib/warden/manager.rb:35:in `call'
warden (0.10.7) lib/warden/manager.rb:34:in `catch'
warden (0.10.7) lib/warden/manager.rb:34:in `call'
/home/heroku_rack/lib/static_assets.rb:9:in `call'
/home/heroku_rack/lib/last_access.rb:25:in `call'
/home/heroku_rack/lib/date_header.rb:14:in `call'
thin (1.0.1) lib/thin/connection.rb:80:in `pre_process'
thin (1.0.1) lib/thin/connection.rb:78:in `catch'
thin (1.0.1) lib/thin/connection.rb:78:in `pre_process'
thin (1.0.1) lib/thin/connection.rb:57:in `process'
thin (1.0.1) lib/thin/connection.rb:42:in `receive_data'
eventmachine (0.12.6) lib/eventmachine.rb:240:in `run_machine'
eventmachine (0.12.6) lib/eventmachine.rb:240:in `run'
thin (1.0.1) lib/thin/backends/base.rb:57:in `start'
thin (1.0.1) lib/thin/server.rb:150:in `start'
thin (1.0.1) lib/thin/controllers/controller.rb:80:in `start'
thin (1.0.1) lib/thin/runner.rb:173:in `send'
thin (1.0.1) lib/thin/runner.rb:173:in `run_command'
thin (1.0.1) lib/thin/runner.rb:139:in `run!'
thin (1.0.1) bin/thin:6
/usr/local/bin/thin:20:in `load'
/usr/local/bin/thin:20
Rendering /disk1/home/slugs/126077_0657264_9a92/mnt/public/500.html (500 Internal Server Error)
任何人都知道为什么它在本地工作得很好但是然后在Heroku上产生错误?
谢谢!
答案 0 :(得分:7)
根据Avishal的回答,我在Rails 3中使用它:
@file = IO.read(params [:report] .tempfile.path)
答案 1 :(得分:4)
实际上并非完全正确。事实证明,如果您将文件上传到Heroku,您可以通过Tempfile类在请求期间访问它。我能够将tempfile读入一个字符串,然后根据需要处理它(它是一个CSV):
@file = IO.read(params[:report][:file].path)
适用于text / csv文件,但我想如果你想做的不仅仅是基本的文本操作,你必须像Joost建议的那样使用S3。
答案 2 :(得分:1)
答案 3 :(得分:1)
我仍然对这个问题感到厌烦。我尝试了这里给出的解决方案能够执行csv文件上传,然后解析它以通过acive记录填充我的数据库。我有以下代码:
file = IO.read(params[:file].tempfile.path)
FasterCSV.new(file, :headers => true).each do |row|
# my parsing logic
end
代码在本地完美运行但在Heruko中根本不起作用。我得到错误,我在heruko日志中看到的就是:
在2012-03-23 07:45:59 +0000开始发布“/ projects / 1 / upload_pivotal_csv”for 122.172.25.106 2012-03-23T07:46:00 + 00:00 app [web.1]: 2012-03-23T07:46:00 + 00:00 app [web.1]:NotImplementedError(请切换到Ruby 1.9的标准CSV库。它是FasterCSV加上对Ruby 1.9的m17n编码引擎的支持。) :强> 2012-03-23T07:46:00 + 00:00 app [web.1]:app / controllers / projects_controller.rb:17:在`upload_pivotal_csv' 2012-03-23T07:46:00 + 00:00 app [web.1]: 2012-03-23T07:46:00 + 00:00 app [web.1]: 2012-03-23T07:46:00 + 00:00 heroku [router]:POST castletrack.herokuapp.com/projects/1/upload_pivotal_csv dyno = web.1 queue = 0 wait = 0ms service = 783ms status = 500 bytes = 728 2012-03-23T07:46:00 + 00:00 app [web.1]:由ProjectsController#upload_pivotal_csv处理为HTML 2012-03-23T07:46:00 + 00:00 app [web.1]:参数:{“utf8”=&gt;“✓”,“authenticity_token”=&gt;“sBmRWpGP3q9Hu7O2cMlmnGTByaTXValxYHw5 + cFoSw0 =”,“file”= &gt;#&gt;,“commit”=&gt;“导入”,“id”=&gt;“1”} 2012-03-23T07:46:00 + 00:00 app [web.1]:在406ms完成
我确信它与ruby版本有关。我在本地使用ruby 1.8.7并使用rails 3应用程序。我不确定heruko上有什么红宝石版本。但我可以说我正在使用ceder堆栈。
答案 4 :(得分:-2)
是的。文件系统是只读的。你可以store your files on S3。