Question

I am following this tutorial http://railscasts.com/episodes/29-group-by-month

and have built a system to allow a user to assign a contact to a specific label. However I need pagination such that it only returns the first 3 labels, second 3 labels, etc.

How do I go about doing this in ActiveRecord

def index
    @connections = @current_user.user_contacts.where('label_id > 0').order("updated_at")
    @connections_label = @connections.group_by { |t| t.label_id }
end

Contact Table
ID | Name | Label_ID
01 | Mike | 1

Label Table
ID | Name
1  | PSU

UPDATED

Answer 1

You could try take

What are you using for pagination? If you wanted to print this out in erb, it would be something like this.

<%= @connections.group_by { |t| t.label_id }.take(3).each do |label, connections| %>
  <%= label.name %>
  <% connections.each do |connection|
    <%= connection.name %>
  <% end %>
<% end %>

This would give you the first 3 labels:

Label 1
 Mike
 ...

Label 2
 Bob
 ...

Label 3
 Jim
 ...

In your controller you should be able to something like @VVN suggested:

.take(3).offset((params[page] || 0) * 3)