Ruby on Rails

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?

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