Looking for Enumerable help I think...

I have a piece of code below. I have activities hooked up to a Calendar
but I'm running into a problem I can't wrap my head around. What I'm
trying to achieve is the output: { period: '<%= February 17, 2008 %>',
teaser: ['Activity 1', 'Activity 2'], label: ['']}, if there is more
than on activity for a given day.

I was thinking that I would have to dump the information into an array
and iterator within the teaser: line, but I can't quite figure it.

Any help would be appreciated.

Thanks!

<% @projects.each do |a| %>
<% a.activities.each do |b| %>
{ period: '<%= b.win_at.strftime("%B, %d, %Y") %>', teaser: ['<%=
b.name %>'], label: ['']},
<% end %>
<% end %>
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