Ruby Active Record Relational

Question

Still a newbie here, but I still couldn't get the logic right.

Currently, I have:

User has many products.
Product has 1 user with a price attribute.

I am trying to add on:

User can offer 1 price on a product sold by another user. User can offer price on multiple products.
A Product can have many offered price by multiple users.

I have currently come out with:

class User < ActiveRecord::Base has_many :products has_many :offered_prices end class Product < ActiveRecord::Base belongs_to :user has_many :offered_prices end

This is what I have done so far. It still doesn't seem quite right as I am rather confused at the same time. Your help is very much appreciated! :)

You need a has_many :through assocation. Take a look at guides.rubyonrails.org/… — Klaus
– Klaus, Commented Apr 6, 2015 at 17:45

Sharvy Ahmed · Accepted Answer · 2015-04-06 17:59:00Z

Define three models:

User | OfferedPrice | Product

The association amongst them will be:

class User < ActiveRecord::Base has_many :products has_many :offered_prices, through: :products end class OfferedPrice < ActiveRecord::Base belongs_to :user belongs_to :product # To make sure a user can offer price once for against a product validates_uniqueness_of :price, scope: [:user, :product] end class Product < ActiveRecord::Base has_many :offered_prices has_many :user, through: :offered_prices end

Collectives™ on Stack Overflow

Ruby Active Record Relational

1 Answer 1

Comments

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Related