[Puppet Users] Using a variable in another variable name

On Feb 21, 2013, at 10:51 AM, windowsrefund wrote:


<%= eval "macaddress_" + my_lan1 %>

That will return the appropriate fact based on the value of my_lan1

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On Thursday, February 21, 2013 8:51:15 AM UTC-8, windowsrefund wrote:


<%= eval "macaddress_" + my_lan1 %>

That will return the appropriate fact based on the value of my_lan1

On Feb 21, 2013, at 10:51 AM, windowsrefund wrote:


<%= eval "macaddress_" + my_lan1 %>

That will return the appropriate fact based on the value of my_lan1

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On Feb 26, 2013, at 10:16 AM, Ti Leggett wrote:

Is there a good way to check that the fact in question actually exists prior to doing an eval? Doing the below when there is no 'my_lan1' fact produces an error.

On Tue, Feb 26, 2013 at 1:11 PM, Ti Leggett wrote:

Nevermind. Figured this out:

<% if defined?( eval "macaddress_" + my_lan1 -%>
...
<% end -%>
prior to doing an eval? Doing the below when there is no 'my_lan1' fact
produces an error.
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On Feb 26, 2013, at 7:15 PM, Adrien Thebo wrote:

Using the scope.lookupvar or getvar functions would be greatly preferable; using `eval` in this context is Really Bad (TM) and could produce some extremely bad behavior depending on the value of my_lan1.