Some examples of RoR model code and Backbone view

person.rb

class Person < ActiveRecord::Base
  # include module for maintenance person.status
  include Person::Status

  # soft delete support for model
  acts_as_paranoid

  # logs all changes for model
  audited associated_with: :company
  has_associated_audits

  # constant define
  # BIRTHDAY_RANGE - define date range for validation birthday
  BIRTHDAY_RANGE = (Time.now.years_ago(99).to_date)..(Time.now.years_ago(5).to_date)

  # callback for notify users about a new person
  after_create   :notify_new_enquiry, if: -> { new_enquiry? }

  # relation with Activity model. All related activities will be removed after remove person
  has_many :activities, inverse_of: :person, dependent: :destroy

  # validation for birthday attribute. 
  # it allow blank value or value that include in the range, else will be validation error and specific error message
  validates :birthday, inclusion: {in: BIRTHDAY_RANGE, allow_blank: true, message: I18n.t('please enter a valid birth date', scope: 'models.person.errors')}

  # scope for search all imported people
  # (used squeel gem for facilities)
  scope :imported, lambda {
    where{ (request_id != nil) | (form_id != nil) }
  }

  # format date from created_at attribute
  # make human_created_at a new copy of the method created_at_formatted
  def human_created_at
    I18n.localize(created_at, format: company.try(:datetime_format)) rescue nil
  end
  alias_method :created_at_formatted, :human_created_at

  # overides save method for models
  def save(*)
    super
  rescue => e
    if external_id_attributes_changed?
      self.new_external_id_attributes.each { |k, v| update_column k.to_sym, v }
      Rails.logger.error "System Integration Error. Failed to save person ##{self.id}. Attributes: #{changes}. Exception: #{e.message}"
    else
      raise e
    end
  end

  private

  # inform all online users via websokets
  def notify_new_enquiry
    company.users.each do |user|
      if user.online? && PersonPolicy.new(user, self).manage?
        FayePublish.for_user user: user, data: self, serializer: NewEnquirySerializer
      end
    end
  end

end

user_views.js.coffee

@SomeApp.module "UsersApp.Edit", (Edit, App, Backbone, Marionette, $, _) ->

  class Edit.FormView extends App.Views.LayoutView
    template: "users/edit/templates/form"

    form: ->
      title: @getTitle()

    regions:
      passwordRegion: '.passwords'

    ui:
      phoneNumber: '#phone_number'

    bindings:
      "[name=first_name]"        : "first_name"
      "[name=email]"             : "email"
      "[name=gender]" :
        observe: "gender"
        initialize: ($el) ->
          $el.select2
            data: App.references.gender
        destroy: ($el) ->
          $el.select2 "destroy"
        afterUpdate: ($el, value) ->
          $el.select2 "val", value

    modelEvents:
      "change:phone_type"        : "togglePhoneNumber"

    onRender: ->
      @stickit()
      @syncDesktopNotifications()

    onShow: ->
      @ui.phoneNumber.hidePhone(true) if @model.get('phone_private')

    syncDesktopNotifications: ->
      App.vent.trigger("user:sync:enabled_desktop_notifications")

  class Edit.PasswordButtons extends App.Views.ItemView
    template: "users/edit/_reset_password"