/ Published in: Rails
                    
                                        
For separating a list of categories with a comma that are linked.  There may be a better way.  Leave a comment if you have a better way.  This was the first way I found that worked.
This code increments the count 1 at a time. It applies the increment to the next loop of data.
                This code increments the count 1 at a time. It applies the increment to the next loop of data.
                            
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<% category_count = @post.categories.length %><% count = 1 %>
<% @post.categories.each do |cat| %>
<%= link_to cat.name, cat %><%= ", " unless category_count == count %><% count += 1 %>
<% end %>
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