If you've been developing on rails 1.x and are now moving to a rails 2.x server, you'll probably
notice that your code doesn't work the same anymore. Here's a common list of changes you might need
to make:
1. Replace all instances of model in your code with require_dependency
Old:
model :cart
model :order_detail
New:
require_dependency 'cart'
require_dependency 'order_detail'
2. Remove instances of include Reloadable from your code. They are not needed
3. start_form_tag and end_form_tag are no longer used. Replace with:
<% form_tag do %>
<% end %>
4. text_field_with_auto_complete is no longer standard with rails. This has been moved into
a plugin that you can install with:
script/plugin install auto_complete
5. ActiveRecord::count() syntax has been modified:
Old:
model.count("column = '23'")
model2.count(['column = ?', 23])
New:
model.count( :conditions => ['column = ?', 23])
model2.count( :conditions => ['column = ?', 23])
Here's a larger list of deprecated items
