> How about:
>    params:
>      currencies: <%= random_array.inspect %>
>
> or something like that.
>
> David

Wow. Thanks, David. This is simple and straight forward, just what I need !

# somewhere outside fixture do the initialization of date array
today = Date.today
first = Date.new(today.year, today.mon, 1)
last = (first >> 1) - 1
dates  = (first..last).collect { |d| d.to_s }

Then in *.yml

params:
  <%= dates.rand_subset %> # rand_subset is from facets library

Again, thanks !

--
Martins