default, required, and quote

Written as a function, the fallback comes first and the value second. In a pipe the value arrives last, so it reads naturally.

For default, empty means 0, an empty string, an empty list, or nil. Any of these triggers the fallback value.

The required function stops rendering with your message when a value is missing, turning silent bugs into clear errors. ⛔

When the value is present, required simply returns it, so you can drop it inline wherever a mandatory field belongs.

A good required message names the missing key and how to set it, so users fix the problem without reading the chart.

The quote function wraps a value in double quotes, protecting YAML from values that look like numbers, booleans, or nulls.

Without quote, a value like yes or 1.20 may be parsed as a boolean or number. Quoting keeps it a predictable string.

These functions compose in one pipeline: supply a default, then quote the result, all in a single readable line.

Use default when a value is optional and required when it is mandatory. Reach for quote whenever a string must stay a string.

You met default for fallbacks, required for mandatory inputs, and quote for safe strings. Together they make values robust. 🎉