Answer Posted / padmavathy

The main differnce is code simplicity... In rails2 we should write the routes using map and each... In rails3 we dont need to write map and all.
For example:
Rails 2:
map.resoucers :users do |user|
user.resource :profile
end

Rails 3:
resources :users do
resource :profile
end
Like wise in active record also have some differences in rails 2 using find(:all) instead in rails 3 we use where etc..

Then terminal you have to write script for cmd instead rails 3 using rails cmd...
Rails 2:
<%=link_to_remote "login", post, :method=>:delete%>

Rails 3:
<%=link_to "login",new_post_path%>
i have noticed some points only have some more differences... Refer it... Those are all main things...

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