无法将数据保存到数据库在Ruby on Rails中导入CSV文件

rails generate migration CreateData

class CreateData < ActiveRecord::Migration[6.0]
  def change
    create_table :data do |t|
      t.string :name
      t.integer :age
      t.string :email
      # 其他列...
      t.timestamps
    end
  end
end

rails db:migrate

rails generate model CsvData

class CsvData < ApplicationRecord
  # 数据库表名为 "data"
  self.table_name = "data"

  # 定义属性与表格列的映射关系
  attribute :name, :string
  attribute :age, :integer
  attribute :email, :string
  # 其他属性...
end

class DataController < ApplicationController
  def import
    file = params[:file]
    CSV.foreach(file.path, headers: true) do |row|
      CsvData.create(row.to_hash)
    end
    redirect_to root_path, notice: "CSV文件导入成功！"
  end
end

<%= form_with(url: import_data_path, method: :post, local: true, multipart: true) do |form| %>
  <%= form.file_field :file %>
  <%= form.submit "导入" %>
<% end %>

Rails.application.routes.draw do
  # 其他路由...
  post 'data/import', to: 'data#import', as: 'import_data'
end