Ruby Active Record Relational -

Ruby Active Record Relational -

still newbie here, still couldn't logic right.

currently, have:

user has many products. product has 1 user cost attribute.

i trying add together on:

user can offer 1 cost on product sold user. user can offer cost on multiple products. a product can have many offered cost multiple users.

i have 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 have done far. still doesn't seem quite right rather confused @ same time. help much appreciated! :)

define 3 models:

user | offeredprice | product

the association amongst them 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 # create sure user can offer cost 1 time against product validates_uniqueness_of :price, scope: [:user, :product] end class product < activerecord::base has_many :offered_prices has_many :user, through: :offered_prices end

ruby-on-rails ruby activerecord associations