gistfile1.txt

where the partial is called:

<ul class="user_avatars">
  <%= render :partial => 'users/user_avatar', collection: @users %>
  <%= render @users %>
</ul>

_user_avatar.html.erb:

<li>
  <%= image_tag @users.avatar.url(:thumb) %>
</li>

_user.html.erb:

<li>
  <%= image_tag user.avatar.url(:thumb) %>
  <%= link_to user.nice_name, user %>
<li>

Also, I have this in the pages controller, which controls the home page, where these are called:

def home
  @title = "Home"
  @users = User.order('created_at DESC').limit(9)
end