I am having issues setting up model relations in Rails.
I have a User. A user can have many requests. A request can have one response. I set up my models like this:
Class User < ActiveRecord::Base
has_many :user_requests
has_many :request_responses, through: :user_requests
end
Class UserRequest < ActiveRecord::Base
belongs_to :user
has_one :request_response
end
Class RequestResponse < ActiveRecord::Base
belongs_to :user_request
end
Whenever I try to do something like:
UserRequest.request_response.id
I get errors that say either the relationship doesn't exist or the column does not exist in the table. Have I set up my relationships incorrectly?
You will get error:
UserRequest.request_response.id
Because:
request_response
is expected to be a class method of UserRequest
. request_responses
, not request_response
, so calling user. request_response
user. request_response
won't work either. call user.request_response_ids
where user = User.first
.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.