francirp

<ul>
  <li>Budget: <%= company.display_budget %></li>
  <li>Actual: <%= company.display_actual %></li>
  <li>Percent Spent: <%= company.display_percent_budget_spent %></li>
</ul>

francirp

# app/decorators/company_decorator.rb

class CompanyDecorator < Draper::Decorator
  delegate_all

  def budget
    h.number_with_precision(object.budget, precision: 2)
  end

francirp

<%= simple_form_for company do |f| %>
  <%= f.input :name %>
  <%= f.input :budget, as: :string %>
  <%= f.input :actual, as: :string %>
  <%= f.submit %>
<% end %>

francirp

<ul>
  <li>Budget: <%= company.budget %></li>
  <li>Actual: <%= company.actual %></li>
  <li>Percent Spent: <%= company.percent_budget_spent %></li>
</ul>

francirp

module CompaniesHelper
  def company
    @decorated_company ||= @company.decorate
  end
end

francirp

# app/decorators/company_decorator.rb

class CompanyDecorator < Draper::Decorator
  delegate_all

  def budget
    h.number_to_currency(object.budget, precision: 0)
  end

francirp

<ul>
  <li>Budget: <%= number_to_currency(@company.budget, precision: 0) %></li>
  <li>Actual: <%= number_to_currency(@company.actual, precision: 0) %></li>
  <li>Percent Spent: <%= number_to_percentage(@company.percent_budget_spent * 100, precision: 1) %></li>
</ul>

francirp

<ul>
  <li>Budget: <%= number_to_currency(@company.budget, precision: 0) %></li>
  <li>Actual: <%= number_to_currency(@company.actual, precision: 0) %></li>
  <li>Percent Spent: <%= number_to_percentage(@company.percent_budget_spent * 100, precision: 1) %></li>
</ul>

francirp

class Bottles
  attr_reader :bottle_number

  def verse(bottle_number)
    @bottle_number = bottle_number
    return plural if bottle_number > 2
    return two if bottle_number == 2
    return one if bottle_number == 1
    return zero if bottle_number == 0
  end

francirp

class NestedAttributesUniquenessValidator < ActiveModel::EachValidator
  def validate_each(record, attribute, items)
    items = items.reject(&:_destroy) # let's ignore the items to be destroyed here
    unless items.map(&options[:field]).to_a.uniq.size == items.size
      record.errors[attribute] << "must be unique"
      field = options[:field]
      values = items.map {|item| item.send(field) }
      duplicates = items.find_all {|item| values.count(item.send(field)) > 1 && item.id.nil? }
      duplicates.each { |obj| obj.errors[field] << "has already been taken" }
    end