noqueries_in_views.html.erb

<% current_user.who_to_follow.limit(5).each do |f| %>
  <li><%= f.name %> - <%= link_to "Follow", follow_user_path(f) %></li>
<% end %>

# It's generally bad practice to have any code that queries your db right there in the view.  You want to do the queries in your controller if at all possible.

<% @who_to_follow.each do |f| %>
  <li><%= f.name %> - <%= link_to "Follow", follow_user_path(f) %></li>
<% end %>

class TweetsController < ApplicationController

  def index
    @who_to_follow = current_user.who_to_follow.limit(5)
  end

end