ruby on rails 异常

最新推荐文章于 2022-05-18 22:18:29 发布

原创最新推荐文章于 2022-05-18 22:18:29 发布 · 825 阅读

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本文讨论了在Rails从4.0.3升级到4.0.4后，因版本冲突导致Bootstrap导入错误的问题，并提供了通过更新Gemfile中gem版本并执行bundleinstall来解决此问题的方法。

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执行rails时出现

Bundler could not find compatible versions for gem "activesupport":

In snapshot (Gemfile.lock):
activesupport (4.0.4)

In Gemfile:
rails (= 4.0.3) ruby depends on
activesupport (= 4.0.3) ruby

Running `bundle update` will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.

意思是我的Gemfile文件和Gemfile.lock文件中版本冲突,先执行bundle update再执行bundle install就可以了。。。

2打开界面出现：

undefined method `environment' for nil:NilClass when importing Bootstrap into rails

up vote 17 down vote favorite

Getting error:

undefined method `environment' for nil:NilClass
Extracted source (around line #5):

<head>
  <title>Dossiyadata</title>
  <%= stylesheet_link_tag    "application", media: "all", "data-turbolinks-track" => true %>
  <%= javascript_include_tag "application", "data-turbolinks-track" => true %>
  <%= csrf_meta_tags %>
</head>

。。。这是rails '4.0.3' 升级到"4.0.4'出现的，解决方法是将Gemfile中gem "sass-rails"版本更改为 "~> 4.0.2" 然后执行bundle install重启服务器即可