Andrzej's Rails tips #8

Resource controller and 'new' action

If you want to refer to the 'new' action using resource controller, you have to use the 'new_action' method.
BTW, if you want to do the same operation before both 'new' and 'edit' actions in a resource controller, you can do it like that:

[new_action, edit].each do |action|
 action.before { @product_types = ProductType.find(:all) }
end

Migrations and removing defaults

If you have some default values set on some columns, then you can remove them using ':default => nil'.
Like that:

change_column :users, :name, :string, :default => nil