Rails - Jan 2006 - If Param not set...

Hello all, I''m developing an application which allows users to browse 
items for sale...

Using the url localhost:3000/browse/by_type/2    (2 is the id of the 
category they are in)

Displays the information I want, however localhost:3000/browse/by_type/ 
will display an error page (becuase the id param is not set)

in my by_type.rhtml view, how to i check to see if the param is set? and 
if not display a message?


Also similar question: I have a Property model where I use
@properties = find(:all, :condition["type_id = ?",
@param[''id'']])

How do I display a "no items found message" if @properties is empty
(ie:
no products for that category)

Thanks!

-- 
Posted via http://www.ruby-forum.com/.

Justin Johnson wrote:
> in my by_type.rhtml view, how to i check to see if the param is set? and 
> if not display a message?
<% if params[:id].nil? %>
   Message
<% end %>
> Also similar question: I have a Property model where I use
> @properties = find(:all, :condition["type_id = ?",
@param[''id'']])
> 
> How do I display a "no items found message" if @properties is
empty (ie:
> no products for that category)
<% if @properties.empty? %>
   Yes, it really is this easy
<% end %>

-- 
Jakob Skjerning - http://mentalized.net