如何将base64编码文件提交到回形针？

Question

我有一个 react native 应用程序，它从设备中读取图像文件作为base64 字符串，并通过axios 将其提交给rails 应用程序。以下是正在提交的部分数据：

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

问题是，我不能直接将它添加到回形针。我应该怎么做才能让它发挥作用？

Answer 1

模型中附加文件的方法（本例中为Event）：

  def add_picture(picture_64, picture_name)
    picture_data                   = Paperclip.io_adapters.for(picture_64)
    picture_data.original_filename = picture_name
    self.picture = picture_data
  end

控制器中的方法：

  def create_picture
    if params[:picture]
      picture_params = params[:picture]
      @event.add_picture(picture_params[:file_data], picture_params[:file_name])
    end
  end

一般来说，您只需要Paperclip.io_adapters.for(picture_64)，它将为您生成Paperclip 可接受的必要对象。