Issue #23112 has been reported by Paul Oyston.
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Bug #23112: Template Hashes - Issue with explicitly setting undef on keys
https://projects.puppetlabs.com/issues/23112
* Author: Paul Oyston
* Status: Unreviewed
* Priority: Normal
* Assignee:
* Category: templates
* Target version:
* Affected Puppet version: 3.3.1
* Keywords:
* Branch:
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There seems to be a bit of an issue with passing hashes with explicitly set
undef values on keys.
For example passing the following hash to the template:
<pre><code class="puppet">$config = {
first_value => 'yes',
second_value => undef
}
</code></pre>
Then within the template using that hash:
<pre><code class="ruby"><% if @config['first_value'] %>
first_value = <%= @config['first_value'] %>
<% end %>
<% if @config['second_value'] %>
second_value = <%= @config['second_value'] %>
<% end %>
<% if @config['third_value'] %>
third_value = <%= @config['third_value'] %>
<% end %>
</code></pre>
Will result in:
<pre>
first_value = yes
second_value = undef
</pre>
As you can see the third_value isn't displayed because it is completely
undefined within the manifest, however second_value is shown even though it's
value was set as undef.
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