a component of the Rails framework that holds the state of an object and is responsible for enforcing business rules and persisting the object.
In my app; when I submit form, I get this error: LoadError at /questions Unable to autoload constant Message, expected /…
ruby-on-rails activemodel rails-models mailboxerRails has a has_one :through association that helps set up a one-to-one association with a third model by going …
ruby-on-rails associations rails-activerecord rails-modelsI have a model & a table which I no longer need in my App, I could leave them there …
ruby-on-rails-3 heroku rails-migrations rails-modelsI have a User model. I can check whether a User is an admin by doing a_user.try(:admin?). …
ruby-on-rails model scope named-scope rails-modelsI want to access a column from OtherModel.rb to MyModel.rb. Is that possible? this is what it looks …
ruby-on-rails rails-modelsI have a Sponsors model and a Promo Codes model. A sponsor can have zero or more promo codes A …
ruby-on-rails ruby-on-rails-4 rails-modelsI have two models, Complaint and Company. Complaint belongs_to and accepts_nested_attributes for Company, and Company has_many …
forms ruby-on-rails-3.2 has-many belongs-to rails-modelsFor a Rails 3.0 Todo app, I have a Tasks model with a Status field. What's the best way to store …
html ruby-on-rails enums rails-modelsI am currently working on a Rails 3 project that is divided up into four parts: The public facing website The …
ruby-on-rails backend rails-modelsIn a Rails application, how can I migrate the changes I make in models? For instance, I know that if …
ruby-on-rails ruby ruby-on-rails-3 rails-migrations rails-models