检查Minimagick的高度会冻结控制台 [英] Checking Minimagick height freezes console

问题描述

我将Rails与MiniMagick配合使用，并具有通过file_field和MiniMagick::Image.read(image.read)上传的obj:

I'm using Rails with MiniMagick and have this obj that I've uploaded through file_field and MiniMagick::Image.read(image.read):

=> #<MiniMagick::Image:0x007feb61ac7048
 @info=#<MiniMagick::Image::Info:0x007feb61ac6ff8 @info={}, @path="/var/folders/s5/0r70nfzn2cj74qmc90ry3kc80000gp/T/mini_magick20170608-62480-1kxoub0">,
 @path="/var/folders/s5/0r70nfzn2cj74qmc90ry3kc80000gp/T/mini_magick20170608-62480-1kxoub0",
 @tempfile=#<File:/var/folders/s5/0r70nfzn2cj74qmc90ry3kc80000gp/T/mini_magick20170608-62480-1kxoub0 (closed)>>

我想用image['height']查看对象的高度，但是每当完成此操作时，命令行就会冻结或得到No live threads left. Deadlock?.如果我只是让程序在没有调试器的情况下运行，我会得到

I want to look into the object's height with image['height'] but whenever I've done that my command line freezes or I get No live threads left. Deadlock?. If I just let the program run without the debugger I get

`identify -format %m %w %h %b /var/folders/s5/0r70nfzn2cj74qmc90ry3kc80000gp/T/mini_magick20170608-62480-v5agnm[0]` failed with error: identify: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.

我尝试添加

MiniMagick.configure do |config|
  config.validate_on_create = false
  config.validate_on_write = false
end

但这没有帮助.

推荐答案

我认为问题出在您的图像路径中，要进行故障排除，请将RMagick排除在等式之外，然后进行测试即可 该文件的内容为:

I think the problem is in your image path, For troubleshooting take RMagick out of the equation and just test find the file with:

myfile = "#{RAILS_ROOT}/public/images/world.jpg"
  File.open myfile, 'r' { |f| puts "Success!\n\nFile Contents:" + f.read
}

此外，尝试使用脚本/控制台"来玩这个游戏.以上行 可以在那里输入.无需进行操作即可更轻松地进行实验 使Web服务器崩溃.

Also, try using "script/console" to play with this. The above lines can be typed in there. It will make it easier to experiment without crashing the web server.

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