you and to record every update or you overwrite when there is an update? On Sat, Sep 11, 2010 at 1:13 PM, nobosh <[email protected]> wrote:
> Hello, newbie here... > > I have the following models: > > class Instance < ActiveRecord::Base > has_many :users > has_many :books > end > > class User < ActiveRecord::Base > belongs_to :instance > end > > class Book < ActiveRecord::Base > belongs_to :instance > end > > I now want to add a BookRevision table, that has the following columns > (id, user_id, version # (auto increment), diff (old book copy), > timestamps) > > Logic: > 1. When a book is Created, a record is added to the BookRevision > table, so we know who created the book in the first place > 2. When a book is Updated, a record is added with the user_id (could > be a different user), and a new version #, and the old book text, to > serve as an archive. > > > > Given that I have the Instance, User, Book table implement in my rails > add, are these the correct steps to make the above come to life? > 1. Add a migration for the BookRevision table.... > rails generate migration AddTableBookRevision user_id:integer > version:integer diff:text > 2. Then update the models as follows: > > class Instance < ActiveRecord::Base > has_many :users > has_many :books > end > > class User < ActiveRecord::Base > belongs_to :instance > end > > class Book < ActiveRecord::Base > belongs_to :instance > has_many :BookRevisions > end > > class BookRevision < ActiveRecord::Base > belongs_to :Book > end > > > > Then in my controller, when adding a new book? Right now I have: > @book = Book.create(params[:book].merge(:instance_id => > current_user.instance_id)) > How do I update that to account for the BookRevision association? > > Thanks for helping me out! > > > > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<rubyonrails-talk%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
