Rails : Show records by months in the view, any other way?

SCENARIO: I have bunch of matches. I want to create in my view a side column with HTML links where you can view the matches by month. Here is my current implementation:

CURRENT SOLUTION:

#Controller
@matches_by_month = Match.find(:all).group_by {|match| match.kickoff.strftime('%B %Y')}

#View
<%  @matches_by_month.each do | month,开发者_Go百科 matches | %>
<%=link_to month %><br>
<% end %>

# Returns in the side column links that look like this.
# April 2011
# May 2011
# Which is great!

SEEKING ADVICE: I'm thinking that this is not a good solution because over a period of time this page will slow down. Right? By 2013 I could have 1500 records and it seems like a waste to continuously find(:all) matches in order to get the months. Is there another solution I can use? Should I keep a separate table outside of 'matches' that tracks the months. Maybe I'm overhtinking this and the current solution is ok. Thoughts?

---

If it is safe to assume that there are matches every month between the first record and the last record you can:

# for your sidebar
start_date = Match.first.kickoff.to_date
end_date = Match.last.kickoff.to_date

<% start_date.step(end_date, 1.month) do |date| %>
  <%= link_to date.strftime('%%B %Y'), matches_by_month_path(date) %>
<% end %>

And then in your controller just parse the date selected and do a conditional find using Match.where(...).