Is it possible to check the gem version of the currently loaded gem in a ruby/rails app?
是否可以在ruby/rails应用程序中检查当前加载的gem版本?
During debugging, I would like to be able to do something like:
在调试过程中，我希望能够做以下事情:
puts RubyGem.loaded_version(:active_support)
Anything like that exist?
诸如此类的存在吗?
2 个解决方案
#1
54
puts Gem.loaded_specs["activesupport"].version
#2
24
careful when comparing against Gem.loaded_specs['mini_magick'].version as it's not a String but a Gem::Version object !
与Gem.loaded_specs['mini_magick']比较时要小心。版本不是字符串而是Gem: version对象!
the version string is accessible using Gem.loaded_specs['mini_magick'].version.version which is ugly and might not work as expected e.g. '2.2' > '2.10' !
使用Gem.loaded_specs['mini_magick'].version可以访问版本字符串。版本很丑，而且可能不像预期的那样工作。“2.2”>“2.10”!
the correct way to compare against a gem version is :
与gem版本进行比较的正确方法是:
Gem.loaded_specs['mini_magick'].version < Gem::Version.create('2.0')
Gem.loaded_specs[' mini_magick ']。版本< Gem::Version.create(“2.0”)
#1
54
puts Gem.loaded_specs["activesupport"].version
#2
24
careful when comparing against Gem.loaded_specs['mini_magick'].version as it's not a String but a Gem::Version object !
与Gem.loaded_specs['mini_magick']比较时要小心。版本不是字符串而是Gem: version对象!
the version string is accessible using Gem.loaded_specs['mini_magick'].version.version which is ugly and might not work as expected e.g. '2.2' > '2.10' !
使用Gem.loaded_specs['mini_magick'].version可以访问版本字符串。版本很丑，而且可能不像预期的那样工作。“2.2”>“2.10”!
the correct way to compare against a gem version is :
与gem版本进行比较的正确方法是:
Gem.loaded_specs['mini_magick'].version < Gem::Version.create('2.0')
Gem.loaded_specs[' mini_magick ']。版本< Gem::Version.create(“2.0”)