strukturedkaos

Data Integrity

Programming is hard. We must valiantly fight complexity on a daily basis. Conditional statements quickly increase the complexity of a system. Every time we’re unsure about a value, we add a conditions to decide how to proceed. If only we could become more confident with the state of the system…

Hurrah! Data integrity can give us this confidence. By constraining our data, we can make some assumptions about the state of the system. Gone are the days of guarding potentially nil values. Out with orphaned and duplicate records! Data is the [life] of our software. Let’s take [life] by the reigns.

strukturedkaos

# stored in app/presenters/student_presenter.rb
class StudentPresenter < SimpleDelegator

  delegate :email, to: :user

  def initialize(student)
    @student = super(student)
  end
  
  def self.find(id)

strukturedkaos

irb(main):013:0> a = []
=> []

irb(main):014:0> a |= [1]
=> [1]

irb(main):015:0> a |= [1]
=> [1]

irb(main):016:0> a

strukturedkaos

#!/usr/bin/env ruby

require 'prime'

class AdditiveFunctionValidator

  attr_reader :limit, :prime_numbers

  def initialize(limit:)
    @limit = limit

strukturedkaos

s3.buckets['kickdrop-production-assets'].objects['uploads/'].copy_to('uploads/', :bucket_name => 'kickdrop-staging-assets')

source_bucket='kickdrop-production-assets'
target_bucket='kickdrop-staging-assets'
source_key = 'uploads'
target_key = 'uploads'
bucket1 = s3.buckets[source_bucket]
bucket2 = s3.buckets[target_bucket]
obj1 = bucket1.objects.with_prefix("uploads")
obj2 = bucket2.objects.with_prefix("uploads")

strukturedkaos

// Send subscriber data to MailChimp
MailChimpSubscription.save(
  // Successfully sent data to MailChimp.
  function (response) {
    // Define message containers.
    mailchimp.successMessage = '';
    mailchimp.errorMessage = '';

    // Store the result from MailChimp
    mailchimp.result = response.result;

strukturedkaos

url = '//' + mailchimp.username + '.' + mailchimp.dc + '.list-manage.com/subscribe/post-json';
params = {
  'EMAIL': mailchimp.email,
  'FNAME': mailchimp.fname,
  'LNAME': mailchimp.lname,
  'c': 'JSON_CALLBACK',
  'u': mailchimp.u,
  'id': mailchimp.id
};
actions = {

strukturedkaos

<input class="hidden" type="hidden" ng-model="mailchimp.username" ng-init="mailchimp.username='kickdrop'">
<input class="hidden" type="hidden" ng-model="mailchimp.dc" ng-init="mailchimp.dc='us3'">
<input class="hidden" type="hidden" ng-model="mailchimp.u" ng-init="mailchimp.u='425ab2b3e010a637cca296582'">
<input class="hidden" type="hidden" ng-model="mailchimp.id" ng-init="mailchimp.id='d2686186f0'">

strukturedkaos

<link rel="stylesheet" href="bower_components/bootstrap/dist/css/bootstrap.css">
<link href="css/app.css" media="all" rel="stylesheet">
<link href="bower_components/animate.css/animate.min.css" media="all" rel="stylesheet" type="text/css" />
<link href="css/animations.css" media="all" rel="stylesheet">
<link href="bower_components/font-awesome/css/font-awesome.min.css" media=all rel=stylesheet />
<link href='http://fonts.googleapis.com/css?family=Lato:100,300,400' rel='stylesheet' type='text/css'>

strukturedkaos

body>
  ...
 
  <!-- In production use:
  <script src="//ajax.googleapis.com/ajax/libs/angularjs/x.x.x/angular.min.js"></script>
  -->
  
  <script src="bower_components/angular/angular.js"></script>
  <script src="bower_components/angular-route/angular-route.js"></script>
  <script src="bower_components/angular-cookies/angular-cookies.js"></script>