capistrano中的符号字符串concat

Question

我正在运行capistrano 3。

我如何才能使下面的行为正确？

我期待cap deploy:test_symbols返回“你是男人！”

  task :test_symbols do
    set :what, 'the man!'
    puts "you are #{:what}"

    # below causes error:
    # undefined local variable or method `what' for main:Object

    puts "you are #{what}"

  end

Answer 1

当您set变量时，您需要fetch使用它：

task :test_symbols do
  set :what, 'the man!'
  puts "you are #{fetch(:what)}"
end