Question

我使用rails构建了一个示例应用程序，并尝试使用capistrano将其部署到bluehost。但我没有这样做。我按照本http://vasil-y.com/2012/08/21/rails-capistrano-git-bluehost/

中提到的说明进行操作

这是我的config / deploy.rb的内容：

require 'bundler/capistrano'

set :application, "rails_scaffold"

# BlueHost SSH user
set :user, "username"

# App Domain
set :domain, "example.com"

# We don't need sudo on BlueHost
set :use_sudo, false

# git is our SCM
set :scm, :git

# master is our default git branch
set :branch, "master"

# Use local git repository
set :repository,  "#{domain}:/home/#{user}/rails_apps/#{application}"
set :local_repository, "."

# Checkout, compress and send a local copy
set deploy_via, :copy
set deploy_to, "/home/#{user}/rails_apps/#{application}"

# We have all components of the app on the same server
server domain, :app, :web, :db, :primary => true

namespace :deploy do
  task :start do ; end
  task :stop do ; end

  # Touch tmp/restart.txt to tell Phusion Passenger about new version
  task :restart, :roles => :app, :except => { :no_release => true } do
    run "touch #{File.join(current_path, 'tmp', 'restart.txt')}"
  end
end

# Clean-up old releases
after "deploy:restart", "deploy:cleanup"

但是当我运行cap deploy：setup命令时，我收到以下错误：

/home/swaroop/.rvm/gems/ruby-1.9.3-p362/gems/capistrano-2.14.2/lib/capistrano/configuration/variables.rb:22:in `set': invalid variable `/u/apps/rails_scaffold' (variables must begin with an underscore, or a lower-case letter) (ArgumentError)

它表示应用程序名称必须以下划线或小写字母开头。我的应用程序名称看起来有效。我在这里做错了什么？

谢谢

Answer 1

您的几个set调用的参数不是符号：

set deploy_via, :copy
set deploy_to, "/home/#{user}/rails_apps/#{application}"

那些应该是：

set :deploy_via, :copy
set :deploy_to, "/home/#{user}/rails_apps/#{application}"

（请注意deploy_via和deploy_to之前的冒号）

如果我们检查包含:application的行中发生的情况，您可以看到与:deploy_to变量相关的原因：它首先调用deploy_to方法（因为您是错过了冒号，它看起来像是一个方法调用），而deploy_to默认为"/u/apps/#{application}"中的_cset(:deploy_to) { "/u/apps/#{application}" }：

set "/u/apps/#{application}", "/home/#{user}/rails_apps/#{application}"

实际上，您的代码正在尝试运行此代码：

"/u/apps/#{application}"

但{{1}}不是Capistrano中的有效变量名。将冒号添加到这些行应该修复它。

通过capistrano将rails app部署到bluehost时出现参数错误

1 个答案: