Rails服务器在启动时突然停止运行。虽然它在一段时间前工作得很好。从那以后我再也没有调整过任何东西。
=> Booting WEBrick
=> Rails 4.0.2 application starting in development on http: //0.0.0.0:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
Exiting
/home/kavya/.rvm/gems/ruby-2.1.0/gems/actionpack-4.0.
我遵循DIY指导创建twitter克隆。我已经跟踪了他所做的一切,但是在为twitter引导创业板执行包安装之后运行项目时,我得到了以下错误。
Your code is running at https://uni-saga-ianlikono.c9users.io.
=> Booting WEBrick
=> Rails 4.2.5 application starting in development on http://0.0.0.0:8080
=> Run `rails server -h` for more startup options
=> Ctrl-C
我需要编写一些代码,这些代码需要运行在ruby 1.8和ruby 2.1上,特别是用UTF-8编码打开一个文件,所以我天真地写了
if RUBY_VERSION > "1.9"
f = File.open('/usr/share/hwdata/pci.ids', encoding: "utf-8")
else
f = File.open('/usr/share/hwdata/pci.ids')
end
当它在ruby2.1上工作时,ruby1.8运行它不应该运行的代码并返回此错误
test_ruby_version.
我已经在笔记本上运行Rails大约一个月了,但是当我想在这个实例中运行服务器时(几个小时前它还正常工作),我现在收到了这条消息。我怎样才能让服务器再次运行?
C:\Sites\LaunchPage>rails s
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/psych.rb:203:in `parse': (<unknown>):
found character that cannot start any token while scanning for the next token at line 17 co
汇总I为一个名为"one_plus“的方法创建了rspec规范,该方法在任何数字中都添加了一个。我想做一个匹配器,它将检查一个数字是否等于2。
Source
误差
john@ubuntu:~/Code/Rspec/Misc/CustomRspecMatchers$ rspec one_plus_spec.rb
F
Failures:
1) the one_plus method should add one to a number
Failure/Error: one_plus(1).should be_two
NoMethodError:
我在Ruby的文档中发现
您可以插入关于所有地方的评论。可以使用两种样式的注释,Ruby (#.…)。)和C风格( .…)。。)。
这是否意味着Ruby支持/*和*/?当我尝试它时,它会带来一个错误:
target of repeat operator is not specified: /*
test
*/
C:/Ruby31-x64/lib/ruby/3.1.0/bundler/resolver.rb:268:in `block in verify_gemfile_dependencies_are_found!': Could not find gem 'rails (~> 7.0.1)' in locally installed gems. (Bundler::GemNotFound)
from C:/Ruby31-x64/lib/ruby/3.1.0/bundler/resolver.rb:252:in `each'
fr
我正在尝试在Ruby中加载无效的YAML数据,但似乎无法修复由rescue引发的异常。
这是一些示例代码来演示我遇到的问题:
require 'yaml'
begin
YAML.load('&*%^*')
rescue
puts "Rescued"
end
但有一个例外:
# ruby test.rb
/usr/lib64/ruby/1.9.1/psych.rb:203:in `parse': (<unknown>): did not find expected alphabetic or numeri
我正在尝试这样做:
describe "should fail on create if the name is shorter than 5 characters" do
group = Factory.build(:group, :name => "a")
group.should be_invalid
group.should have(1).error_on(:name)
end
但我得到以下错误:
/spec/models/group_model_spec.rb:22: undefined local variab
WARNING: Nokogiri was built against LibXML version 2.9.2, but has dynamically loaded 2.9.0
/Users/olleh/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/psych.rb:369:in `parse': (<unknown>): mapping values are not allowed in this context at line 14 column 10 (Psych::SyntaxError)
我被这个问题困住了。当我运行Rai
使用CarrierWave和亚马逊S3,我可以存储本地文件中的图片,但当我尝试存储某些url中的图片时,我得到'TypeError:无法将nil转换为字符串‘
from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/carrierwave-0.5.8/lib/carrierwave/uploader/cache.rb:149:in `join'
from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1
每当我输入一个gem命令时,我都会得到以下错误:
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/psych.rb:205:in `parse': (<unknown>): could not find expected ':' while scanning a simple key at line 3 column 1 (Psych::SyntaxError)
from /System/Library/Frameworks/Ruby.framework/Ve
我不知道这是什么问题。
这是控制台输出。
$ whenever --update-crontab
Системе не удается найти указанный путь.
C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/gems/whenever-0.10.0/lib/whenever/command_line.rb:77:in `popen': No such file or directory - crontab - (Errno::ENOENT)
from C:/RailsInstaller/Ruby2.3.