Usage has many and one association on the same model
I want my custom object to be able to be associated with many addresses and for one of those addresses to be the primary address.
I am trying to do this without using the primary address boolean notation, instead using both has-many and a-one-association - as per PinnyM's first approach in the following SO: Rails model which has both has_one and has_many, but with some restrictions
But I cannot get it to work.
class User < ActiveRecord::Migration def change create_table(:users) do |t| t.integer :primary_address_id t.string :name end end end class Address < ActiveRecord::Migration def change create_table(:addresses) do |t| t.integer :user_id t.string :address end end end
class User has_many :addresses has_one :primary_address, :class_name => "Address" end class Address belongs_to :user has_one :user end
This allows me to use the has_many association by doing user.addresses, but I don't have access to one association. I've tried doing:
user.primary_address user.addresses.primary_address user.addresses.primary_address.first
I really don't understand how to set these associations correctly or how to refer to them. Thank your help!
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Simply created models and associations that you use. I don't understand why it doesn't work in your case, because I can access the primary_address. This is the code I am using to access it using the rails console. Note. I created a user and a couple of addresses beforehand.
in case if you have user with id = 1 User.find(1).primary_address or another example User.first.primary_address
I don't think your associations will allow these calls, though:
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