Templates if/else

[Gary Richardson]

Hey,

I'd like to do something like this in my template:

<%= if has_variable?('some_variable') then %><%= some_variable%><% else %>default<% end %>

http://reductivelabs.com/trac/puppet/wiki/PuppetTemplating talks about conditionals, but not so much about if/else.

Any suggestions?

Thanks!

[Andrew Shafer]

Gary,

The templates are using standard ERB, which essentially gives you the ability to do arbitrary conditional logic using ruby.

Anything between <% %> is logic code and <%= %> is evaluated and printed.

<% if condition %>
<%= print_this %>

<% else %>
default
<% end %>

Play with ERB, it is very flexible.

[Gary Richardson]

Thanks, that got it going for me. I don't know if there was a typo in my block of code, but it didn't work for the first time around.

[Andrew Shafer]

I think your original snippet doesn't work because the first if is inside an <%= %> block.  So the rest of the code probably doesn't parse right.