如何从另一个Rails控制器访问方法

# 源控制器
class SourceController < ApplicationController
  def method_in_source
    @data = "Hello from source controller!"
    redirect_to target_path
  end
end

# 目标控制器
class TargetController < ApplicationController
  def method_in_target
    puts @data # 输出 "Hello from source controller!"
  end
end

# 源控制器
class SourceController < ApplicationController
  def method_in_source
    redirect_to target_path(data: "Hello from source controller!")
  end
end

# 目标控制器
class TargetController < ApplicationController
  def method_in_target
    puts params[:data] # 输出 "Hello from source controller!"
  end
end

# 共享模块
module SharedMethods
  def shared_method
    "Hello from shared method!"
  end
end

# 源控制器
class SourceController < ApplicationController
  include SharedMethods

  def method_in_source
    puts shared_method # 输出 "Hello from shared method!"
  end
end

# 目标控制器
class TargetController < ApplicationController
  include SharedMethods

  def method_in_target
    puts shared_method # 输出 "Hello from shared method!"
  end
end