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当我尝试升级到 rails 5.1.1 时遇到 gem 问题，当我从 4.2 运行 bundle update rails 时得到以下输出： 知道问题可能是什么吗？

Bundler could not find compatible versions for gem "railties":
In Gemfile:
railties (~> 5.0)

devise was resolved to 4.3.0, which depends on
  railties (< 5.2, >= 4.1.0)

quiet_assets (~> 1.1) was resolved to 1.1.0, which depends on
  railties (< 5.0, >= 3.1)

rails (~> 5.1.1) was resolved to 5.1.1, which depends on
  railties (= 5.1.1)

responders (~> 2.1) was resolved to 2.4.0, which depends on
  railties (< 5.3, >= 4.2.0)
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1 回答 1

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认为问题可能在于railties (~> 5.0)，如果您再往下看，那么它会指出 Rails 5.1.1 需要 Railties 5.1.1。rails (~> 5.1.1) was resolved to 5.1.1, which depends on railties (= 5.1.1). 顺便说一句，你以前升级过吗？可能值得从 4.2 升级到 5.0，然后再升级到 5.1，以确保您从已弃用的方法中捕获任何错误。看到这个-> Rails 升级指南

编辑添加：看起来 quiet_assets gem 已被弃用。如果您需要 quiet_assets gem，请查看这篇关于静音资产记录的文章（比我解释得更好）！Rails 5 中的安静资产

于 2017-06-27T14:31:12.100 回答