I have a model called Company, this model is used for both companies and clients, I know this is not the best approach for companies/clients but the software I'm working on was built that way and to change that, it would take months of job.
class Company < ActiveRecord::Base
has_many :companies
belongs_to :company
has_many :orders, dependent: :destroy
end
My other model is Orders, where the companies are linked by the company_id column and the customers by the customer_id column, that is, an order is linked to a company and a customer of that company.
class Order < ActiveRecord::Base
belongs_to :company
end
Currently I created a method to get the customer but I would like to call a has_one to get the customer from the order, but I am not able to point the customer_id column of the order to the company id column using the rails class_name.
If anyone can help me in this endeavor I would be very grateful.
CodePudding user response:
If I understand your question correctly (in the first para you mentioned clients and in the second you are saying customers so I am assuming clients == customers and customer is also a Company
object) you are trying to do this:
class Order < ActiveRecord::Base
belongs_to :company
has_one :customer, class_name: 'Company'
end
which seems incorrect as it should be belongs_to
:
class Order < ActiveRecord::Base
belongs_to :company
belongs_to :customer, class_name: 'Company'
end
This should work but you can also specify foreign_key
:
belongs_to :customer, class_name: 'Company', foreign_key: :customer_id
From the docs: https://api.rubyonrails.org/v7.0.2.4/classes/ActiveRecord/Associations/ClassMethods.html#method-i-has_one
has_one
specifies a one-to-one association with another class. This method should only be used if the other class contains the foreign key. If the current class contains the foreign key, then you should use belongs_to instead.