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

require 'net/http'
module Net
  class HTTP
    def self.enable_debug!
      raise "You don't want to do this in anything but development mode!" unless Rails.env == 'development'
      class << self
        alias_method :__new__, :new
        def new(*args, &blk)
          instance = __new__(*args, &blk)
          instance.set_debug_output($stderr)

Fivell

unicorn.rb
-----------------------------------

application     = "jarvis"
remote_user     = "vagrant"
env = ENV["RAILS_ENV"] || "development"
RAILS_ROOT = File.join("/home", remote_user, application)

worker_processes 8
timeout 30

Fivell

ruby-1.9.3-p327 cumulative performance patch for rbenv

This installs a patched ruby 1.9.3-p327 with various performance improvements and a backported COW-friendly GC, all courtesy of funny-falcon.

Requirements

• rbenv
• ruby-build

You will also need a C Compiler. If you're on Linux, you probably already have one or know how to install one. On OS X, you should install XCode, and brew install autoconf using homebrew.

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|

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

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 DefaultValues

  def has_default_values(default_values = {})

    class_attribute :default_values
    self.default_values = default_values

    after_initialize :assign_default_values

    include InstanceMethods

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 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