ruby-on-rails - ":nothing" 选项已弃用，将在 Rails 5.1 中删除

Question

rails 5中的此代码

class PagesController < ApplicationController
  def action
    render nothing: true
  end
end

导致以下弃用警告

DEPRECATION WARNING: :nothing` option is deprecated and will be removed in Rails 5.1. Use `head` method to respond with empty response body.

我该如何解决？

Answer 1

根据rails source，这是在通过nothing: truerails 5 时在引擎盖下完成的。

if options.delete(:nothing)
  ActiveSupport::Deprecation.warn("`:nothing` option is deprecated and will be removed in Rails 5.1. Use `head` method to respond with empty response body.")
  options[:body] = nil
end

因此，只需替换nothing: true为body: nil即可解决问题。

class PagesController < ApplicationController
  def action
    render body: nil
  end
end

或者你可以使用 head :ok

class PagesController < ApplicationController
  def action
    head :ok
  end
end