升级到 Rails 5，无法解决依赖关系

Question

从 Rails 4.2.10 升级到 Rails 5.1.4 会导致以下错误消息。我不确定如何解决依赖关系。 ruby 版本为 2.5.1。 Rails 4.2.10 运行没有问题，bundle upgrade 运行没有返回任何错误。

更新： 在下面添加了 Gemfile 以供参考。在执行 bundle update 之前删除 Gemfile.lock 时，仍然会生成以下错误消息。

错误信息

Bundler could not find compatible versions for gem "activemodel":
  In Gemfile:
    rails (~> 5.1.4) was resolved to 5.1.4, which depends on
      activemodel (= 5.1.4)

web-console (~> 2.0.0.beta3) was resolved to 2.0.0, which depends on
  activemodel (~> 4.0)

Bundler could not find compatible versions for gem "activesupport":
  In Gemfile:
    jbuilder (~> 2.7.0) was resolved to 2.7.0, which depends on
  activesupport (>= 4.2.0)

rails (~> 5.1.4) was resolved to 5.1.4, which depends on
  activesupport (= 5.1.4)

Bundler could not find compatible versions for gem "rails":
  In Gemfile:
    rails (~> 5.1.4)

Could not find gem 'rails (~> 5.1.4)' in any of the sources.Bundler could not 
find compatible versions for gem "activemodel":
  In Gemfile:
    rails (~> 5.1.4) was resolved to 5.1.4, which depends on
      activemodel (= 5.1.4)

web-console (~> 2.0.0.beta3) was resolved to 2.0.0, which depends on
  activemodel (~> 4.0)

Bundler could not find compatible versions for gem "activesupport":
  In Gemfile:
jbuilder (~> 2.7.0) was resolved to 2.7.0, which depends on
  activesupport (>= 4.2.0)

rails (~> 5.1.4) was resolved to 5.1.4, which depends on
  activesupport (= 5.1.4)

Bundler could not find compatible versions for gem "rails":
  In Gemfile:
rails (~> 5.1.4)

Could not find gem 'rails (~> 5.1.4)' in any of the sources.

Gemfile

source 'https://rubygems.org'

gem 'rails', '~> 5.1.4'
gem 'sass-rails'
gem 'bootstrap-sass'
gem 'bcrypt'
gem 'uglifier',     '~> 3.2.0'
gem 'coffee-rails', '~> 4.2.2'
gem 'jquery-rails', '~> 4.3.1'
gem 'turbolinks',   '~> 5.0.1'
gem 'jbuilder',     '~> 2.7.0'
gem 'sdoc', '~> 0.4.0', group: :doc
gem 'stripe'

group :development, :test do
  gem 'sqlite3',     '~> 1.3.9'
  gem 'byebug',      '~> 3.4.0'
  gem 'web-console', '~> 2.0.0.beta3'
  gem 'spring',      '~> 1.1.3'
end

group :test do
  gem 'minitest-reporters', '~> 1.0.5'
  gem 'mini_backtrace',     '~> 0.1.3'
  gem 'guard-minitest',     '~> 2.3.1'
end

group :production do
  gem 'pg',             '0.17.1'
  gem 'rails_12factor', '0.0.2'
  gem 'puma'
end

Answer 1

gem 网络控制台正在锁定您的更新过程，首先将其更改为更新的版本，例如：

gem 'web-console', '>= 3.3.0'

然后删除 Gemfile.lock 和运行 bundle install 也总是好的检查其他 gem 的版本并检查官方 Rails 升级http://guides.rubyonrails.org/upgrading_ruby_on_rails.html

中的流程文档

升级到 Rails 5，无法解决依赖关系

Upgrading to Rails 5, can't resolve dependencies

ruby-on-rails

ruby-on-rails-5

rails-upgrade