twitter: [Rails] How to use a class, put it inside a model?

def load_feeds
@feeds_ds = feeds.first
@feeds = vopo? ? feeds.second : feeds.last
end

def feeds
@feeds ||= Feedzirra::Feed.fetch_and_parse(FEEDS).values.map { |
feed| feed.entries.first(6) }.entries
end

def vopo?
params[:vopo] == 'po'
end
end

This is my class.
I would like to display the feeds on every page. Where should i put
it? in a model or controller?
and how doe i use it?

def load_feeds
f = Feeds.new
f::feeds
f::load_feeds
end

This is what my view looks like

<%- for feed in @feeds[0..2] -%>
<%= link_to feed.title, feed.url -%>
<p><%=h feed.summary[0..60] %>...</p></li>
<%- end -%>

Thank you in advance.

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