载波抛出“堆栈电平太深”。文件上传错误 [英] carrierwave throws "stack level too deep" error on file upload

问题描述

我遇到了一个奇怪的问题，现在不知道如何进一步调试...

i have a weired problem and don't now how to debug further...

如果我使用html格式上传文件，则会得到：

if i upload an file with my html form i get:

SystemStackError (stack level too deep):

跟踪为：

Started POST "/global/accounts/82" for 127.0.0.1 at 2011-07-27 10:28:03 +0200
  Processing by Global::AccountsController#update as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"tAf/cGPjW+uGgdl6J7t+IZgGsNKkVDLCCWYMFdtQd7g=", "account"=>{"logo_cache"=>"", "shortcut_icon"=>#<ActionDispatch::Http::UploadedFile:0x0000010632daa0 @original_filename="18677_265409985796_708130796_4889342_5500573_n.jpg", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"account[shortcut_icon]\"; filename=\"18677_265409985796_708130796_4889342_5500573_n.jpg\"\r\nContent-Type: image/jpeg\r\n", @tempfile=#<File:/tmp/RackMultipart20110727-3683-1yazc7m>>, "shortcut_icon_cache"=>""}, "commit"=>"Einstellungen speichern", "member"=>{"cancel"=>:get}, "id"=>"82"}
  User Load (1.1ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 261 LIMIT 1
  Account Load (0.8ms)  SELECT `accounts`.* FROM `accounts` WHERE `accounts`.`id` = 82 LIMIT 1
  SQL (2.0ms)  describe `roles_users`
  Role Load (3.8ms)  SELECT `roles`.* FROM `roles` INNER JOIN `roles_users` ON `roles`.id = `roles_users`.role_id WHERE `roles`.`name` = 'admin' AND (`roles_users`.user_id = 261 ) LIMIT 1
  Account Load (1.9ms)  SELECT `accounts`.* FROM `accounts` WHERE `accounts`.`subdomain` = '***' LIMIT 1
  SQL (0.2ms)  BEGIN
  SQL (0.6ms)  SELECT 1 FROM `accounts` WHERE (LOWER(`accounts`.`subdomain`) = LOWER('***')) AND (`accounts`.id <> 82) LIMIT 1
  AREL (0.5ms)  UPDATE `accounts` SET `shortcut_icon` = 'aadf09e05f4db4124c62bfb9340aa9bd.jpg', `updated_at` = '2011-07-27 08:28:08' WHERE `accounts`.`id` = 82
  Account Load (0.5ms)  SELECT `accounts`.* FROM `accounts` WHERE `accounts`.`id` = 82 LIMIT 1
  SQL (1.2ms)  ROLLBACK
Completed   in 2831ms

SystemStackError (stack level too deep):

跟踪，似乎文件已上传并写入数据库：

analysing the trace, it seems that the file is uploaded and written to the DB:

 AREL (0.5ms)  UPDATE `accounts` SET `shortcut_icon` = 'aadf09e05f4db4124c62bfb9340aa9bd.jpg', `updated_at` = '2011-07-27 08:28:08' WHERE `accounts`.`id` = 82

，但是之后会引发错误...。

but after that it throws the error....

在rails控制台中测试载波：

testing carrierwave in the rails console:

ruby-1.9.2-p180> path = "/Users/kalle/Desktop/button.png"
ruby-1.9.2-p180> u = Account.last
ruby-1.9.2-p180> u.logo = File.open(path)
 => #<File:/Users/kalle/Desktop/button.png> 
ruby-1.9.2-p180> u.save!
 => true 

可以正常工作！

我有一个文件上传@另一个模型，因此载波安装工作正常（类似上传器）。

well, i have a file upload @ another model, so the carrierwave installation works fine (similar uploader).

测试html表单不提交文件

所以：

• 表格在没有文件字段的情况下工作


• 载波文件上传可在控制台中运行


• 不同的模型，类似的carrierwave uploader / config =>可以运行！

我该如何进一步调试？

感谢您的帮助！

Rails 3.0.7 / ruby​​-1.9.2-p180 / carrierwave（0.5.3）

Rails 3.0.7/ruby-1.9.2-p180/carrierwave (0.5.3)

编辑：
似乎只发生在更新操作上。

seems that it happens only on the update action.

控制器：

def update
  if current_account.update_attributes(params[:account])
    flash[:notice] = 'Successfully updated account.'
    redirect_to global_settings_path
  else
    render :action => 'edit'
  end
end

推荐答案

<我有类似的问题。
当我调用photo.url时，它引发了堆栈级深度错误。

I had a similar problem. When I called photo.url it throwed a "stack level to deep error".

在我的PhotoUploader中似乎有以下代码：

It seemed I had the following code in my PhotoUploader:

  def url
    filename = self.to_s
    content_type = File.mime_type?(filename)    
    ext = {
      'image/png'  => :png,
      'image/jpg'  => :jpg,
      'image/jpeg' => :jpg,
      'image/gif'  => :gif

    }[content_type]
    ext ||= :jpg

    { :id => model.id, :version => version_name, :format => ext }    
  end

此代码在0.5.8载波中似乎可以正常工作。
我更新到0.6.2，因为它失败了。

This code seemed to work fine in carrierwave 0.5.8. I updated to 0.6.2 and since it failed.

问题是我打电话给self.to_s。正如我在载波代码中发现的那样：
to_s是这样实现的：

The problem is I'm calling self.to_s. As I found out in the carrierwave code: to_s is implemented like this:

  def to_s
    url || ''
  end

通过将self.to_s更改为self.file问题已解决

By changing self.to_s to self.file the problem was solved

  def url
    filename = self.file
    # ... rest of the code ..
  end 

这篇关于载波抛出“堆栈电平太深”。文件上传错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！