为什么我得到 "undefined local variable or method `rails_env'"？

Question

我在做

时得到 undefined local variable or method 'rails_env'

execute "cd #{current_path} && RAILS_ENV=#{rails_env} bundle exec rake sunspot:solr:stop"

我不是大 Capistrano 或 rails 专家。

在 deploy.rb 我有

namespace :solr do
  desc "start solr"
  task :start do
    on roles(:app) do
      execute "cd #{current_path} && RAILS_ENV=#{rails_env} bundle exec rake sunspot:solr:start"
    end
  end

  desc "stop solr"
  task :stop do
    on roles(:app) do
      execute "cd #{current_path} && RAILS_ENV=#{rails_env} bundle exec rake sunspot:solr:stop"
    end
  end

  desc "reindex the whole database"
  task :reindex do
    on roles(:app) do
      invoke 'solr:stop'
      execute "rm -rf #{shared_path}/solr/data/*"
      invoke 'solr:start'
      execute "cd #{current_path} && RAILS_ENV=#{rails_env} d"
    end
  end

  desc "Symlink in-progress deployment to a shared Solr index"
  task :symlink do
    on roles(:app) do
      execute "ln -s #{shared_path}/solr/data/ #{release_path}/solr/data"
      execute "ln -s #{shared_path}/solr/pids/ #{release_path}/solr/pids"
      invoke 'solr:reindex'
    end
  end
end

after "deploy:finishing", "solr:symlink"

在 deploy/staging.rb 我有

 set :rails_env, :staging

错过了什么？

Answer 1

尝试用 Rails.env

替换 rails_env

Answer 2

你应该使用fetch方法。所以，而不是 rails_env 使用：

fetch(:rails_env)

Here (or here) 是更多细节。

为什么我得到 "undefined local variable or method `rails_env'"？

Why I'm getting "undefined local variable or method `rails_env'"?

ruby-on-rails

solr

capistrano

capistrano3