CODEWITHSUNDEEP
ruby-on-rails
jckly
jckly

Reputation: 851

Rails: How can I achieve this relationship model?

I'm looking to create a simple relationship model with the following:

I have 2 main items. Product / WishList

The relationship between them is pretty straight forward a WishList has_many :products and a Product belongs_to_many :wishlists

I understand that there isn't a belongs_to_many association and as simple as this may be I can't seem to wrap my head around the right relationship model.

If someone could suggest a nice way to achieve this it would be much appreciated.

Thanks.

Upvotes: 2

Views: 118

Answers (1)

Arnaud
Arnaud

Reputation: 17737

You have a choice between a has_many :through and a has_and_belong_to_many relation.

Pick the first one if you need to attach other attributes to the model that will be the bridge (for instance a position, if you want to order your wishlist), or the second one otherwise (more about that here)

So it could look like so

class Product < ActiveRecord::Base
  has_many :items
  has_many :wishlists, through: :items
end

class Item < ActiveRecord::Base
  belongs_to :product
  belongs_to :wishlist
end

class Wishlist < ActiveRecord::Base
  has_many :items
  has_many :products, through: :items
end

Upvotes: 2

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