gistfile1.txt

<%= date_today = Date.today %><br />

<% i = date_today %>

<% while i <= date_today + 6 %>

<%= i.strftime("%A") %><br />

<% i = i + 1 %>

<% end %>

Change:
<%= date_today = Date.today %>

To:
<%= Date.today %>>br />

And:
<% while i <= date_today + 6 %>
<%= i.strftime("%A") %>

<% i = i + 1 %>
<% end %>
With:
<% while i <= Date.today + 6 %>
<%= i.strftime("%A") %>

<% i++ %>
<% end %>

Oh wait I see what you're doing. That won't work.

There's a better ruby control structure that you can use. Need to find it.

This will do it:
def get_days_of_week
@days_of_week = Array.new

  Date.today.upto(Date.today + 6) do |day|
      @days_of_week << day
  end

  @days_of_week
end

Put that in your helper or controller and call it in the appropriate action. Then just loop through the array of dates in your view.