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<%# app/views/layouts/application.html.erb %>
...
<%= javascript_include_tag "locales/#{I18n.locale}", nonce: true %>

ryanb

class CreateNodes < ActiveRecord::Migration[6.0]
  def change
    create_table :nodes do |t|
    end
    
    create_table :node_edges do |t|
      t.integer :parent_id, null: false
      t.integer :child_id, null: false
    end
    

ryanb

class EpisodeSearch
  attr_reader :ability, :options
  delegate :sanitize, to: Episode

  def initialize(ability, options = {})
    @ability = ability
    @options = options.dup
  end

  def tag

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# This should be triggered through a cron job at 6:15 PM on week days.
# Example cron: 15 18 * * 1,2,3,4,5 cd ~/code/jury_duty && ~/.rbenv/shims/ruby call.rb >> ~/code/jury_duty/call-log.txt 2>&1
# It uses Twilio to make a call based on TWILIO_ACCOUNT_SID, TWILIO_AUTH_TOKEN, and TWILIO_PHONE.
# It calls the JURY_PHONE, transcribes it, looks for JURER_NUMBER and texts the result to PERSONAL_PHONE.
require "rubygems"
require "bundler/setup"
Bundler.require(:default)

Dotenv.load

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GitHub.TreeSlider = function () {
    if (window.history && window.history.pushState) {
        function a() {
            if (e.sliding) {
                e.sliding = false;
                $(".frame-right").hide();
                $(".frame-loading:visible").removeClass("frame-loading")
            }
        }
        if (!($("#slider").length == 0 || !GitHub.shouldSlide)) if (!navigator.userAgent.match(/(iPod|iPhone|iPad)/)) {

ryanb

class Ability
  include CanCan::Ability
  
  def initialize(user)
    user ||= User.new # guest user
    
    if user.role? :admin
      can :manage, :all
    else
      can :read, :all

ryanb

My issues with Modules

In researching topics for RailsCasts I often read code in Rails and other gems. This is a great exercise to do. Not only will you pick up some coding tips, but it can help you better understand what makes code readable.

A common practice to organize code in gems is to divide it into modules. When this is done extensively I find it becomes very difficult to read. Before I explain further, a quick detour on instance_eval.

You can find instance_eval used in many DSLs: from routes to state machines. Here's an example from Thinking Sphinx.

class Article < ActiveRecord::Base

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<!-- layout file -->
<% if current_user %>
  Welcome <%= current_user.username %>. Not you? <%= link_to "Log out", logout_path %>
<% else %>
  <%= link_to "Sign up", signup_path %> or <%= link_to "log in", login_path %>.
<% end %>

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module Abilities
  def self.ability_for(user)
    if user.admin?
      AdminAbility.new(user)
    else user
      MemberAbility.new(user)
    else
      GuestAbility.new
    end
  end

ryanb

#!/usr/bin/env bash
apt-get -y update
apt-get -y install build-essential zlib1g-dev libssl-dev libreadline5-dev libyaml-dev
cd /tmp
wget ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p125.tar.gz
tar -xvzf ruby-1.9.3-p125.tar.gz
cd ruby-1.9.3-p125/
./configure --prefix=/usr/local
make
make install