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website: document required user vars

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pull/375/merge
Mitchell Hashimoto 13 years ago
parent 570be4d581
commit 4e2936d270
1 changed files with 4 additions and 0 deletions
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website/source/docs/templates/user-variables.html.markdown vendored
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@ -48,6 +48,10 @@ In the above example, the template defines two variables: `aws_access_key` and
Later, the variables are used within the builder we defined in order to Later, the variables are used within the builder we defined in order to
configure the actual keys for the Amazon builder. configure the actual keys for the Amazon builder.
If the default value is `null`, then the user variable will be _required_.
This means that the user must specify a value for this variable or template
validation will fail.
Using the variables is extremely easy. Variables are used by calling Using the variables is extremely easy. Variables are used by calling
the user function in the form of <code>{{user &#96;variable&#96;}}</code>. the user function in the form of <code>{{user &#96;variable&#96;}}</code>.
This function can be used in _any string_ within the template, in This function can be used in _any string_ within the template, in

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