Refactor if function in ruby/rails [closed]

Question

working on a rails app that doesn't seem to want to run 'Until' or 'While' functions. Having to do the following:

<% if q == 2 or q == 5 or q == 8 or q == 11 or q == 14 or q == 17 or q ==20 %>

Any suggestions for how I can improve this?

Try something like <% if q in [2,5,8,11,14,17,20] %> - not sure if ERB allows this though. — Ash, Dec 11 '12 at 21:07
OK that doesn't work. Try: <% if [2,5,8,11,14,17,20].include? q %> — Ash, Dec 11 '12 at 21:10
What are you trying to accomplish? A loop with a step of 3? In that case try (2..20).step(3) do ... end — Flambino, Dec 11 '12 at 22:22

CubaLibre · Answer 1 · 2012-12-12 16:35:59Z

up vote 2 down vote

If you really want to test these specific numbers, you could try

if (q % 3 == 2) && (q <= 20)

answered Dec 12 '12 at 16:35

CubaLibre
1211

David Österreicher · Answer 2 · 2012-12-12 19:50:18Z

up vote 0 down vote

if (2..20).step(3).to_a.include?(q)

answered Dec 12 '12 at 19:50

David Österreicher
24113

closed as off topic by Jeff Vanzella, Glenn Rogers, Brian Reichle, James Khoury, Corbin Dec 14 '12 at 2:35