Suppress closure return value in ruby on rails erb file

I have a simple erb template that pulls information from a (Grit) git repository. It displays the information just fine, but it also displays the return value of the closure which is the array of commits I'm iterating through. I found a similar question here, but the solution does not change my output at all.

#controller method for home
def home
  @repo = Repo.new("/home/matt/gitrepo")
end

#home.html.erb
<%= @repo.commits[1..3].each do |commit| %>
  <%= content_tag(:div, "#{commit.author}", :class=>"author") %>
<% end %>

the page output is

Matt Phillips
Matt Phillips
Matt Phillips
[#<Grit::Commit "e761477be972855b0c4273c1c7837baa25178210">, #<Grit::Commit "18开发者_开发知识库140c17632fae7dbf33cdd5e372f96ebe8104de">, #<Grit::Commit "f7e8ee090bb3e8259627179287d1722c328b614f">]

How can I suppress the array?

EDIT: Here's what it looks like in irb

ruby-1.9.2-p180 :011 > include Grit
=> Object  
ruby-1.9.2-p180 :012 > @repo = Repo.new("/home/matt/gitrepo")
=> #<Grit::Repo "/home/matt/gitrepo/.git"> 
ruby-1.9.2-p180 :013 > @repo.commits[1..3].each do |commit|
ruby-1.9.2-p180 :014 >     puts commit.author
ruby-1.9.2-p180 :015?>   end
Matt Phillips
Owen Johnson
Matt Phillips
=> [#<Grit::Commit "e761477be972855b0c4273c1c7837baa25178210">, #<Grit::Commit  
"18140c17632fae7dbf33cdd5e372f96ebe8104de">, #<Grit::Commit  
"f7e8ee090bb3e8259627179287d1722c328b614f">] 
ruby-1.9.2-p180 :016 > 

Change this

<%= @repo.commits[1..3].each do |commit| %>

to this

<%- @repo.commits[1..3].each do |commit| %>

had a ;nil at the end before I realized the = was there

<%= and <%- both indicate we output the results of the contained Ruby expression. In the case of your each block the result is the array.

Change to:

<% @repo.commits[1..3].each... %>

That tells us to not output anything