我安装红矿山,我变得疯狂,因为一个耙的问题。特别是,为了执行不同Ruby插件的包安装,我被要求安装xapian-完全-alaveteli,v1.2.9.5。问题是,我得到了以下错误:
Building native extensions. This could take a while...
ERROR: Error installing xapian-full-alaveteli:
ERROR: Failed to build gem native extension.
/home/redmine/.rvm/rubies/ruby-2.2.0/bin/ruby -rubygems /h
我正在尝试执行我的RoR应用程序,但是当我执行命令:rails s时,会显示以下错误:
/Users/Jarvis/Documents/Projects/Vincubo/vincubo/bin/rails:6: warning: previous definition of APP_PATH was here
Usage: rails COMMAND [ARGS]
The most common rails commands are:
generate Generate new code (short-cut alias: "g")
console Star
我正在尝试使用Phusion passenger和RVM在Ubuntu生产服务器上部署一个Rails3应用程序。我已经成功安装了Phusion passenger,但在浏览器上访问服务器时出现以下错误:
Ruby (Rack) application could not be started
These are the possible causes:
There may be a syntax error in the application's code. Please check for such errors and fix them.
A required librar
我安装了一个faker gem (我确保它不在dev/test中!)。我想在视图上生成几个随机引号。我想把它放在欢迎/索引中。
在我的welcome_controller中,我有:
require 'faker'
class WelcomeController < ApplicationController
def index
@faker_array = []
5.times do |n|
@faker_array.push(Faker::HitchhikersGuideToTheGalaxy.quote)
end
end
我正在尝试构建一个用于交互Yahoo Placemaker的gem,但我遇到了一个问题。当我尝试运行以下代码时,会得到:
NameError: uninitialized constant Yahoo::Placemaker::Net
from /Users/Kyle/.rvm/gems/ruby-1.9.2-p290/gems/yahoo-placemaker-0.0.1/lib/yahoo-placemaker.rb:17:in `extract'
from (irb):4
from /Users/Kyle/.rvm/rubies/ruby-1.9.2-p2
我有一个在本地系统上成功构建的应用程序,但是当部署到Heroku时,或者使用rails server -e production输出运行时:
=> Rails 4.0.0 application starting in production on http://0.0.0.0:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
Exiting
/home/nmradar/Documents/old-manager/app/controllers/registra
在Ruby gem上工作,并尝试在RSpec中使用FactoryBot。
我在support/factory_bot.rb里有这个
RSpec.configure do |config|
config.include FactoryBot::Syntax::Methods
config.before(:suite) do
FactoryBot.find_definitions
end
end
在spec_helper.rb中
require 'support/factory_bot'
当我尝试运行spec rake任务时,我得到这个错误:
support/
我有一个模块存在于我的Rails应用程序中,名为lib/renderraphs.rb。看起来是这样的:
require 'gnuplot'
module RenderGraphs
def render_standard_curve_graph(standard_curve, params, term = nil, output = nil)
Gnuplot.open do |gp|
# do things
end
end
end
if __FILE__ == $0
include RenderGraphs
render_standar
当a未定义时,a || 1将抛出错误,但a = a || 1不会。这是不是有点不一致?
irb(main):001:0> a
NameError: undefined local variable or method 'a' for main:Object
from (irb):1
from c:/ruby/bin/irb:12:in '<main>'
irb(main):002:0> a || 1
NameError: undefined local variable or method 'a&
我有一些代码可以从的基于块的响应体流转换为普通的IO。
def stream_response_body(body)
IO.pipe(Encoding::BINARY, Encoding::BINARY) do |rd, wr|
t = copying_thread(body, wr)
yield rd
ensure
t.join if t
end
end
def copying_thread(body, dst)
Thread.new do
body.each { |chunk| dst.write(chunk) }
rescue Sta