使用ActiveAdmin在Rails应用程序中导入CSV数据

gem 'activeadmin'

rails generate active_admin:resource YourModel

ActiveAdmin.register YourModel do
  menu label: 'YourModel'

  collection_action 'import' do
    render 'import'
  end

  collection_action 'upload', method: :post do
    begin
      file = params[:file]
      if file.present?
        file_content = file.read
        csv = CSV.parse(file_content, headers: true)
        csv.each do |row|
          YourModel.create(row.to_hash)
        end
        redirect_to admin_your_model_path, notice: 'CSV imported successfully'
      else
        redirect_to import_admin_your_model_path, alert: 'Please select a file to import'
      end
    rescue StandardError => e
      redirect_to import_admin_your_model_path, alert: "Error importing CSV: #{e.message}"
    end
  end
end

<%= form_tag(upload_admin_your_model_path, multipart: true) do %>
  <div>
   <label for="file">Choose a CSV file to import:</label>
   <input type="file" name="file" id="file">
  </div>
  <br>
 <input type="submit" value="Import">
<% end %>