Updating to rails 2 2 2

Object Relational Mapping, commonly referred to as its abbreviation ORM, is a technique that connects the rich objects of an application to tables in a relational database management system.

Using ORM, the properties and relationships of the objects in an application can be easily stored and retrieved from a database without writing SQL statements directly and with less overall database access code.

The ones that are still on Rails 4.0, or even 3.2, because you didn’t feel like dragging them kicking and screaming into the future?

In Active Record, objects carry both persistent data and behavior which operates on that data.

Active Record takes the opinion that ensuring data access logic as part of the object will educate users of that object on how to write to and read from the database.

Please follow the steps below to upgrade Infopark Rails Connector to version 6.8.0: Localization files From version 6.7.3, Ruby on Rails localization files are no longer included in Infopark Rails Connector packages.

For running a Rails Connector application in a different language than English, localization files are required.

The upgrade guide will walk you through most of the major changes between Rails versions.

It’ll tell you exactly how to change your app to fix the biggest problems you’ll run into.As I discovered on github https://github.com/rails/rails/issues/5424rails engines migrations should be checked into source control.But I don't see how it's possible to upgrade database with rails 2.3plugins migrations to rails 3 engines migrations.And in the process, you’ll learn how to take full advantage of Rails 4.2’s new features.You should always start your Rails upgrade by reading the Rails Upgrade Guide.def configure_permitted_parameters devise_parameter_sanitizer.permit(:sign_up) do |user| user.permit(:username, :email, :role, :password, :password_confirmation) end devise_parameter_sanitizer.permit(:sign_in) do |user| user.permit(:username, :password, :remember_me) end devise_parameter_sanitizer.permit(:account_update) do |user| user.permit(:username, :email, :role, :current_password, :password, :password_confirmation) end end A deprecation message appeared when I updated to Ruby 2.2.5 and Rails 4.2.7 along with Devise 4.2.0 and Rspec 3.5: To handle this, in the rspec configuration, I needed to replace this (just as the message said): Out of curiosity I was wondering if there are any changes to the default files created by the Devise generators on a new install.