validates :user, presence: true, uniqueness: true Much easier than what you are trying to do.
Note that this will work in 99.999% of the time, 0.001% of the time you will get duplicate records in your database because of race conditions Alternatively, if your user really is going to have only 1 address, then why isn't the address_id field inside of the User model? (You would then have your User belong_to :address). Seems like a more appropriate model for what you are trying to do. -Jason On Oct 8, 2014, at 9:20 AM, GeorgeFromTheBank <[email protected]> wrote: > Hello, > > I want to restrict my users having more than one address. > > Here are the definitions from my classes : > > class User < ActiveRecord::Base > has_one :address, dependent: :destroy > end > class Address < ActiveRecord::Base > belongs_to :user > validates :user, presence: true > validate :user_association > > def user_association > unless Address.where(user_id: user.id).count == 0 > errors.add(:user_id, 'Only one address per user') > end > end > end > > I'm creating my address from user model, like this : > def create_address_relation > a = Address.create(address_type: @type.to_s, user_id: id) > self.address = a > end > > However when I'm able to create two address objects for same user. (I'm using > paranoia gem for soft deleting objects, not sure if that is relevant) > > Any suggestion how to make validations work? except unique index on the db > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/rubyonrails-talk/f9593b29-3a3a-44e2-976c-3016c9d4fbea%40googlegroups.com. > For more options, visit https://groups.google.com/d/optout. ---- Jason Fleetwood-Boldt [email protected] http://www.jasonfleetwoodboldt.com/writing All material © Jason Fleetwood-Boldt 2014. Public conversations may be turned into blog posts (original poster information will be made anonymous). Email [email protected] with questions/concerns about this. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/84D5CD9A-4FCA-43DE-ACD7-9CAD02DE02F9%40datatravels.com. For more options, visit https://groups.google.com/d/optout.
