CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3
nish
nish

Reputation: 7280

RoR: How to access a model object in another model

I have created a new model in my app - PaypalOrder. Now in one of the methods of this model I want to be able to access current_order object. Where Order is an existing model. How can I do this in ruby on rails?

I read about associations, but they seem a bit complicated.

EDIT: The problem with using associations is that not every Order will have a corresponding PaypalOrder. But whenever there is a PaypalOrder I want to access Order. How can I setup this association

Upvotes: 0

Views: 75

Answers (3)

Boti
Boti

Reputation: 3435

Hm... current_order and curren_user and usually current_s are tight to the session. So they can be accessed only by the controller. Since the models are handling business-domain logic they shouldn't access these objects...

Upvotes: 0

arieljuod
arieljuod

Reputation: 15838

what about:

class PaypalOrder
  belongs_to :order
end

?

you need an "order_id" column in paypal_orders table

and that's it

you then create a PaypalOrder with

def some_action
  current_order = Order.find(some_id)
  paypal_order = PaypalOrder.new(order: current_order)
  #do what you want with paypal_order
end

if you don't have the order_id do

bundle exec rails g migration AddUserToPaypalOrder

and the change method

add_column :paypal_orders, :user, :references

or

add_column :paypal_orders, :user_id, :integer

Upvotes: 1

SG 86
SG 86

Reputation: 7078

The way to go is to use concerns, it works like this:

Model:

# app/models/PayPayOrder.rb
class PayPalOrder < BaseModel
  # concerns

  include MyMultipleNeededMethods

  ...

  def now_i_use_the_concern_method
    concern_method
  end

  ...
end

Concern:

# app/models/concerns/MyMultipleNeededMethods.rb
module MyMultipleNeededMethods
  extend ActiveSupport::Concern

  def concern_method
    puts "refactored like a boss"
  end

  ...
end

Never ever try to cross reference methods this way. Use the given rails framework, its awesom ;-)

Upvotes: 0

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