namtx

import React, { Component } from "react";
import logo from "./logo.svg";
import "./App.css";
import InputField from "./FancyInput"; 

class App extends Component {
  constructor(props) {
    super(props);
    this.textInput = React.createRef();
    // this.handleSubmit = this.handleSubmit.bind(this);

namtx

require 'active_support/log_subscriber'

module ActiveStorage
  class LogSubscriber < ActiveSupport::LogSubscriber
    def service_upload(event)
      message = event.payload[:something]
      info event, color(message, GREEN)
    end
  end
end

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class Encrypter
  def initialize(key)
    @key = key
  end
  def encrypt(reader, writer)
    key_index = 0
    while not reader.eof?
      clear_char = reader.getc
      encrypted_char = clear_char ^ @key[key_index]
      writer.putc(encrypted_char)

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class Greeting
  def initialize text
    @text = text
  end
  
  def welcome
    @text
  end
end

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class Quesion < ApplicationRecord
  SUBMITITABLE_TYPES = %w(Open MultipleChoice Scale).freeze

  validates :maximum, presence: true, if: :scale?
  validates :minimum, presence: true, if: :scale?
  validates :question_type, presence: true, inclusion: SUBMITITABLE_TYPES
  validates :title, presence: true

  def summary
    case question_type

namtx

![lgtm](http://i.imgur.com/XTVGHwg.gif)

namtx

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

namtx

Thoughts about Rails Presenters

This is a collection of links, examples and rants about Presenters/Decorators in Rails.

---

The "Decorator" pattern slowly started gaining popularity in Rails several years ago. It is not part of core Rails, and there's many different interpretations about how it should work in practice.

Jay Fields wrote about it in 2007 (before he switched back to Java and then Clojure): http://blog.jayfields.com/2007/03/rails-presenter-pattern.html

namtx

problems

class Address < ActiveRecord::Base
  belongs_to :customer
end

class Customer <ActiveRecord::Base
  has_one :address
  has_many :invoices
end