Ruby on rails 如何通过表单获取临时文件的内容

index.html.erb

= form_for :file_upload, :html => {:multipart => true} do |f|
      = f.label :uploaded_file, 'Upload your file.'
      = f.file_field :uploaded_file
      = f.submit "Load new dictionary"

= form_for :index, :html => {:multipart => true} do |f|
      = f.label :uploaded_file, 'Upload your file.'
      = f.file_field :uploaded_file
      = f.submit "Load new dictionary"

模型

索引

---

但是，在我上传文件后，我的页面上没有打印任何内容。请使用

文件。阅读
阅读上传文件的内容：

def file_upload
  @contents = params[:uploaded_file].read
  # save content somewhere
end

解决此问题的一种方法是将
文件\u upload
定义为类方法，并在控制器中调用该方法

index.html.erb

= form_for :file_upload, :html => {:multipart => true} do |f|
      = f.label :uploaded_file, 'Upload your file.'
      = f.file_field :uploaded_file
      = f.submit "Load new dictionary"

= form_for :index, :html => {:multipart => true} do |f|
      = f.label :uploaded_file, 'Upload your file.'
      = f.file_field :uploaded_file
      = f.submit "Load new dictionary"

模型

控制器

def index
  if request.post?  
    @contents = Model.file_upload(params[:uploaded_file])
  end
end

你需要进行精神检查之类的。既然控制器中定义了
@contents
，您就可以在视图中使用它了。
如何将内容发送回索引您是如何将
参数[：upload_file]
发送到您的模型中的？这看起来像控制器代码
def index
  if request.post?  
    @contents = Model.file_upload(params[:uploaded_file])
  end
end