I am new to RoR and trying to learn my way around. I have Bruce Tate's
RoR Up And Running book and am using it to learn RoR.
An example in chapter 2 page 34 shows how simple it is to add
validation for table records. The example adds validation to the
ActiveRecord model class Photo.rb as follows:
Class without validation:
class Photo < ActiveRecord::Base
end
Class with validation:
class Photo < ActiveRecord::Base
validates_presence_of :filename
end
The MySQL table that this class is managing is as follows:
Think of it this way... when you start console you are in *one* session. Just like if you change a model in the middle of making a request via your browser, it's not going to update. In other words, every instance of console is a "browser hit".
You can type "reload!" and it will reload all the classes. This could invalidate some of your previously find'ed objects though so you might have to re-find them.
Thanks Nathan. As you can tell, I am really new to Rails. Is there a
place/book/tutorial where I can find answers for console related
questions? I find the console to be very useful tool while learning
and would like to know all the commands and tricks like the one you
mention above.
Regards,
Bharat
