Importr

Extends active-admin to import excel files. Based on Active-Importer dsl import.

Installation

Add this line to your application's Gemfile:

gem 'importr'

Usage

Install migrations:

$ rake importr:install:migrations

Add your importers in app/importers. Here is a importer example:

class PricingImporter < Importr::Importer
  imports Pricing

  column 'Fecha', :date
  column 'Precio/tasa', :value
  column 'Vector precio', :vector_id
end

Go to Active-Importer documentation for more information about importers

Active Admin support

ActiveAdmin.register Pricing do
  menu parent: "Money"
  data_import_interface
end

Access restriction

To restrict access to the import data actions you need to supply restriction_method in importr config, example:

config/importr.rb

Importr::Config.setup do |config|
  config.restriction_method       = "check_importr_roles"
end 

appplication_controller.rb

def check_importr_roles
  raise CanCan::AccessDenied unless current_admin_user.is_admin?
end

WebSocket integration, Faye example

There are two ways to notify progress, errors and validation messages of an import; by default Importr uses Ajax Poll strategy. If you need to notify the progress more smoothly, you can configure websocket notification in an initializer:

Importr::Config.setup do |config|
  config.web_socket_class         = 'FayeWrapper'
  config.web_socket_method        = "publish"
  config.websocket_url_service    = "http://localhost:8000/faye"
  config.websocket_client_script  = "http://localhost:8000/faye/client.js"
end

Importr will manage the event publication for errors and send notifications with web_socket_class.publish method.

Faye Wrapper example

In config/initializers/faye.rb write something like

WS_CLIENT = Faye::Client.new('http://localhost:8000/faye')

class FayeWrapper
  def self.publish(channel, message)
    run_event_machine
    puts "#{channel} #{message}"
    WS_CLIENT.publish(channel, message)
  end

  def self.run_event_machine
    Thread.new { EM.run } unless EM.reactor_running?
    Thread.pass until EM.reactor_running?
  end
end

Finnaly you must to run a Faye websocket server

Dependencies

SideKiq

CarrierWave

Maintainers

• Miguel Michelson github/michelson
• Ernesto García github/gnapse

Copyright (c) 2013 continuum, released under the MIT license