Problem with render_component and rails 3

I have a application that it use view/layout/application.rhtml, in
this file I have:

<%= render_component :controller => 'car', :action =>'index'%>

But there is one problem, it display this problem: undefined method
`render_component' for #<#<Class:0xb67e6e48>:0xb67e5f34>

How can I resolve this problem?

Quoting Ricardo Gonçalves Dias <ricardogdias@hotmail.com>:

I have a application that it use view/layout/application.rhtml, in
this file I have:

<%= render_component :controller => 'car', :action =>'index'%>

But there is one problem, it display this problem: undefined method
`render_component' for #<#<Class:0xb67e6e48>:0xb67e5f34>

How can I resolve this problem?

IIRC, components have been deprecated since 2.0. There may be a gem or plugin
to provide backwards compatibility (that may not have been updated for Rails
3). But, if it were me, I'd update to more modern idioms.

Jeffrey