Ruby on Rails 4 - CSV导入 - 没有隐式转换为字符串

Question

我正在尝试将CS​​V数据导入我的mysql数据库,但是当我尝试上传文件时遇到错误:

no implicit conversion of ActionDispatch::Http::UploadedFile into String

这就是CSV文件中的一行:

751,"01/17/2015","11:17:32","60","TDFSRDSK","2","10","-1","0","3","","26","3","","","1","0"

这是导入的代码,在product.rb中

def self.import(file)
  CSV.foreach(file) do |row|
    id, jour, heure, valeur, app, a, b, c, d, e, f, g, h, i, j, k, l = row
    userid = current_user.id
    product = Product.create(date: jour, valeur: valeur,user_id: userid)
  end
end

在product_controller.rb中

def import
 Product.import(params[:file])
 redirect_to_root_url, notice "Products imported"
end

在索引中:

<%= form_tag import_products_path, multipart: true do %>
 <%= file_field_tag :file %>
 <%= submit_tag "Import" %>
<% end %>

在routes.rb我有:

resources :products do
 collection {post :import}
end

Answer 1

尝试给出params[:file].path参数.像这样,

Product.import(params[:file].path)

结帐这个.