从控制台命令上传 CSV

终端命令：

rails g model Product name:string quantity:integer price:decimal{12,2}
rake db:migrate

Lates 创建控制器。

终端命令：

rails g controller Products

控制器代码：

class HistoriesController < ApplicationController
    def create
        file = Dir.glob("#{Rails.root}/public/products/**/*.csv") #=> This folder directory where read the CSV files
        file.each do |file|
            Product.import(file)
        end
    end
end 

模型：

class Product< ApplicationRecord
  def self.import(file)
      CSV.foreach(file.path, headers: true) do |row|
          Product.create! row.to_hash
      end
  end
end

routes.rb

resources :products

应用程序/配置/ application.rb 中

require 'csv'

现在打开你的开发 console＆run

=> ProductsController.new.create #=> Uploads your whole CSV files from your folder directory