使用ActiveAdmin在Rails应用程序中导入CSV数据

Question

我想通过activeadmin面板上传CSV文件.

在资源"产品"的索引页面上,我想要一个带有"import csv file"的"new product"按钮旁边的按钮.

我不知道从哪里开始.在文档中是关于collection_action的东西,但是使用下面的代码我顶部没有链接.

ActiveAdmin.register Post do
    collection_action :import_csv, :method => :post do
      # Do some CSV importing work here...
      redirect_to :action => :index, :notice => "CSV imported successfully!"
    end
  end

这里有谁使用activeadmin并可以导入csv数据？

Answer 1

继续托马斯·沃特森(Thomas Watsons)的伟大开端,帮助我在确定剩下的部分之前得到了答案.

代码打击不仅允许示例Posts模型的CSV上传,还允许其后的任何后续模型.您需要做的就是将action_item和示例中的collection_actions复制到任何其他ActiveAdmin.register块中,功能将相同.希望这可以帮助.

应用程序/管理/ posts.rb

ActiveAdmin.register Post do
  action_item :only => :index do
    link_to 'Upload CSV', :action => 'upload_csv'
  end

  collection_action :upload_csv do
    render "admin/csv/upload_csv"
  end

  collection_action :import_csv, :method => :post do
    CsvDb.convert_save("post", params[:dump][:file])
    redirect_to :action => :index, :notice => "CSV imported successfully!"
  end

end

应用程序/模型/ csv_db.rb

require 'csv'
class CsvDb
  class << self
    def convert_save(model_name, csv_data)
      csv_file = csv_data.read
      CSV.parse(csv_file) do |row|
        target_model = model_name.classify.constantize
        new_object = target_model.new
        column_iterator = -1
        target_model.column_names.each do |key|
          column_iterator += 1
          unless key == "ID"
            value = row[column_iterator]
            new_object.send "#{key}=", value
          end
        end
        new_object.save
      end
    end
  end
end

注意:此示例检查第一列是否为ID列,然后跳过该列,因为rails将为新对象分配ID(请参阅下面的示例CSV以供参考)

应用程序/视图/管理/ CSV/upload_csv.html.haml

= form_for :dump, :url=>{:action=>"import_csv"}, :html => { :multipart => true } do |f|
  %table
    %tr
      %td
        %label{:for => "dump_file"}
          Select a CSV File :
      %td
        = f.file_field :file
    %tr
      %td
        = submit_tag 'Submit'

应用程序/公/ example.csv

"1","TITLE EXAMPLE","MESSAGE EXAMPLE","POSTED AT DATETIME"
"2","TITLE EXAMPLE","MESSAGE EXAMPLE","POSTED AT DATETIME"
"3","TITLE EXAMPLE","MESSAGE EXAMPLE","POSTED AT DATETIME"
"4","TITLE EXAMPLE","MESSAGE EXAMPLE","POSTED AT DATETIME"
"5","TITLE EXAMPLE","MESSAGE EXAMPLE","POSTED AT DATETIME"

注意:并不总是需要报价

Answer 2

添加a collection_action不会自动添加链接到该操作的按钮.要在索引屏幕顶部添加按钮,您需要将以下代码添加到ActiveAdmin.register块中:

action_item :only => :index do
  link_to 'Upload CSV', :action => 'upload_csv'
end

但在调用您在问题中发布的收集操作之前,首先需要用户指定要上载的文件.我个人会在另一个屏幕上执行此操作(即创建两个集合操作 - 一个是:get操作,另一个是您的:post操作).所以完整的AA控制器看起来像这样:

ActiveAdmin.register Post do
  action_item :only => :index do
    link_to 'Upload posts', :action => 'upload_csv'
  end

  collection_action :upload_csv do
    # The method defaults to :get
    # By default Active Admin will look for a view file with the same
    # name as the action, so you need to create your view at
    # app/views/admin/posts/upload_csv.html.haml (or .erb if that's your weapon)
  end

  collection_action :import_csv, :method => :post do
    # Do some CSV importing work here...
    redirect_to :action => :index, :notice => "CSV imported successfully!"
  end
end

Answer 3

@krhorst,我试图使用你的代码,但不幸的是它很糟糕的大进口.它吃了太多的内存=(所以我决定使用基于activerecord-import gem的自己的解决方案

这是https://github.com/Fivell/active_admin_import

特征

1. 编码处理
2. 支持使用ZIP文件导入
3. 两步导入(参见示例2)
4. CSV选项
5. 能够自动添加CSV标头
6. 批量导入(activerecord-import)
7. 能够自定义模板
8. 回调支持
9. 支持从zip文件导入
10. ....