如何在json中渲染任何内容？

Question

我正在测试以下方法:

  def destroy
    if @article.destroy
      render json nothing: true, message: "removed", status: :ok
    else
      render json: @article, message: "Failed to remove", status: :bad_request
    end
  end

该render json nothing行生成错误

#Api :: V1 :: ArticlesController:0x000000074f6148的未定义方法`json'

改变线条render json: message: "removed", status: :ok没有区别.怎么没有渲染？

更新:我尝试了下面的代码,删除后回复No response received,而我期待的消息.

  def destroy
    if @article.destroy
      respond_to do |format|
        format.json { render nothing: true, message: "removed", status: :ok }
      end
    else
      render json: @article, message: "Failed to remove", status: :bad_request
    end
  end

Answer 1

如果你真的不想渲染任何东西:

head :ok # or any another status, e.g. :created, :accepted, etc

如果要将JSON消息作为响应发送:

render json: { message: "removed" }, status: :ok

Answer 2

如果您不想返回任何内容,则返回HTTP 204 No Content会更有意义.

render :nothing => true, :status => 204

或者更好的是:

head :no_content