On Thursday, May 29, 2014 9:23:54 AM UTC-5, Mark McFate wrote:
>
> I'm probably going about this all wrong, but I have an instance where I've
> employed a Puppet module and need to *sometimes* add a "creates"
> attribute to one of the exec's defined there. My code (below) is probably
> all wrong, but I think you'll see what I am trying to do...
>
> if $creates != nil {
>
>
I think you can spell that as
if $creates { [...]
(See the docs on
truthiness<http://docs.puppetlabs.com/puppet/3/reference/lang_datatypes.html#automatic-conversion-to-boolean>
.)
Alternatively, you could take advantage of the fact that interpolating an
unset variable gets you the empty string:
if "$creates" == '' { [...]
> exec { "drush-${title}" :
> command => "drush ${command} ${root_option} ${uri_option}
> ${force_option} ${additional_options}",
> path => [ '/bin', '/usr/bin' ],
> creates => $creates,
> }
> } else {
> exec { "drush-${title}" :
> command => "drush ${command} ${root_option} ${uri_option}
> ${force_option} ${additional_options}",
> path => [ '/bin', '/usr/bin' ],
> }
> }
>
>
> This doesn't work and neither does specifying an empty or nil attribute,
> like "creates => ''" or "creates => nil".
>
>
You want
creates => undef
for that approach (no quotes). That's an affirmative declaration of not
specifying any value, even an empty one, for the given parameter.
John
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