Fivell

require 'nokogiri'
RSpec::Matchers.define :have_xml do |xpath, text|
  match do |body|
    doc = Nokogiri::XML::Document.parse(body)
    nodes = doc.xpath(xpath)
    nodes.empty?.should be_false
    if text
      nodes.each do |node|
        node.content.should == text
      end

Fivell

module ActiveAdminHelper

  def admin_arbre_context
    @admin_arbre_context ||= Arbre::Context.new(assigns, self)
  end

  def default_renderer
    case controller.send(:resource_class).name
    when "ActiveAdmin::Page"
      "page"

Fivell

require 'rubygems'
require 'rubygems/package'
require 'zlib'
require 'fileutils'

module Util
  module Tar
    # Creates a tar file in memory recursively
    # from the given path.
    #

Fivell

# if you want to monkey patch every controller, put this in initializers/active_admin.rb
ActiveAdmin::ResourceController.class_eval do
  include ActiveAdmin::CSVStream
end

Fivell

module ActiveAdmin
    
  module Reports    
    module DSL
      def enable_reports
        action_item only: :index do
          link_to("Download", {action: :report, params: params}, {method: :post, data: { confirm: "Are you sure you want to generate this report?"}})
        end
  
        collection_action :report, method: :post do

Fivell

# db/migrations/20120118012543_create_site_configuration.rb

class CreateSiteConfigurations < ActiveRecord::Migration
  def change
    create_table :site_configurations do |t|
      t.string  :key
      t.text    :value
      t.string  :form_type
      t.string  :form_collection_command

Fivell

module DefaultValues

  def has_default_values(default_values = {})

    class_attribute :default_values
    self.default_values = default_values

    after_initialize :assign_default_values

    include InstanceMethods

Fivell

Saving ActiveAdmin filters between requests

This shows one technique for preserving filters on index pages for ActiveAdmin resources, without having to patch the ActiveAdmin core.

It restores any previously-used filters whenever the index page is rendered for a resource, unless the current request is an actual application of new filters. It also properly handles the clear-filters button (via a synchronous Ajax request that happens immediately before the normal filter form processing).

Yes, it's a bit of a hack, but it has worked well for me so far.

Usage

Fivell

module ActiveAdminHelper

  def admin_arbre_context
    @admin_arbre_context ||= Arbre::Context.new(assigns, self)
  end

  def default_renderer
    case controller.send(:resource_class).name
    when "ActiveAdmin::Page"
      "page"

Fivell

# This file extends and overrides parts of the ActiveAdmin DSL and internals
# in order to provide support for automatically displaying and editing images,
# which in our infrastructure are stored as URLs whose column names end in "img".
# Since this file will be reloaded frequently in the development environment,
# all operations done at load time (class_eval's, etc.) MUST be idempotent.

ActiveAdmin::Views::TableFor.class_eval do

  def img_column(col_sym=:img, title="Image")
    column title, sortable: false do |obj|