henrik

1. Your class can be no longer than 100 lines of code.
2. Your methods can be no longer than five lines of code.
3. You can pass no more than four parameters and you can’t just make it one big hash.
4. When a call comes into your Rails controller, you can only instantiate one object to do whatever it is that needs to be done. And your view can only know about one instance variable.

You can break these rules if you can talk your pair into agreeing with you.

jnstq

class TicketsController < ApplicationController
    
  def index
    @order = Order.paid.find_by_permalink!(params[:user_order_id])
    
    ticket_report = TicketReport.new
    ticket_report.order = @order

    respond_to do |format|
      format.pdf do

jasoncodes

class CreateItemChildrenCountView < ActiveRecord::Migration
  def self.up
    execute <<-SQL
      CREATE VIEW item_children_count AS
      SELECT parent_id AS item_id, COUNT(*) as children_count
      FROM items GROUP BY parent_id;
    SQL
  end

  def self.down