eprothro

Helper Module

# spec/support/custom_forms_helper.rb
module CustomFormsHelper
  def foundation_select(option, opts={})
    # Zurb Foundation adds custom markup after (and then hides)
    # the originating select. Here we simulate the user's interaction
    # with the custom form instead of just setting the hidden originating select's value
    originating_select_name = opts[:from]

eprothro

require 'spec_helper'

describe Resource do
  let(:resource) { create :resource }

  #-------------------------------------#
  # ActiveRecord Relationship Behaviors #
  #-------------------------------------#

  context "with/when some context/event" do

eprothro

Overview

The below Sass+Compass/Ruby can be used to:

• Generate retina and non-retina sprite maps
• Allow a single style class to provide retina and non-retina support, per image
• Automatically generate those sprite style classes

Example markup for a retina supported menu button:

%a.icon-hamburger

eprothro

  def select2_select(option, opts={})
    # same as foundation_select, but for select2
    # boxes used throughout the staff app.
    originating_select_name = opts[:from]

    originating_select_id = find("select[name='#{originating_select_name}']")['id']
    custom_select = find(".select2-container[id$='#{originating_select_id}']")
    # click dropdown
    custom_select.find("a.select2-choice").click
    # click option with correct text

eprothro

/assets/javascripts/elements/ImageUpload.js

function ImageUpload($el) {
  var self = this;

  self.$el = $el
  self.$image = $(this.$el.attr('data-image-selector'));
  self.$uploadForm = this.$el.find('.s3-uploader')
  self.$uploadTriggers = this.$el.find('.js-upload-image-trigger');
  self.$imageUploader = this.$el.find('#file');

eprothro

Usage

$ rake pg:query_time
total time (min) ▾ | average execution (ms) |            query
--------------------+------------------------+------------------------------
       2.0379       |       1153.5163        | SELECT COUNT(*) FROM "users"  WHERE ("users"."username" ILIKE ?)
       1.3497       |        809.8202        | INSERT INTO users (email, username, auth_token) VALUES (?, ?, ?), ...
       0.0056       |        111.416         | SELECT COUNT(*) FROM "users"  WHERE ("users"."avatar_file_name" ILIKE ?)
(3 rows)

eprothro

Run PG:PSQL

With pg installed, you can run the pg:psql Heroku command to connect to your database and execute commands using the psql interactive terminal:

$ heroku pg:psql

psql (9.3.5, server 9.3.3)
SSL connection (cipher: DHE-RSA-AES256-SHA, bits: 256)
Type "help" for help.
database-name=> |

eprothro

module Benchmark
  def memory_usage
    `ps -o rss= -p #{Process.pid}`.to_i
  end
  def memory
    m0 = memory_usage
    yield
    memory_usage - m0
  end
  def kb

eprothro

Enumerators yield for each value in the enumeration

calling next returns the next value, and then raises when there's no values left

e = Enumerator.new do |yielder|
  a = 1
  yielder.yield a
end

e.next
=> 1

eprothro

class TestQuery < SimpleDelegator
  def initialize
    super(Bomb.all.extending(Scopes))
  end
  module Scopes
    def processed
      where(Bomb.arel_table[:asset_remote_url].eq(nil))
    end
 end