Required and fail do nothing

[Cenness]

Template

{{ fail "message" }}
name: {{ .Values.unset | required "unset messsage" }}

and no values produce following output:

name: <no value>

[codeclown]

Helm-playground intentionally does not throw an error for these, because an error would cause the entire template to not be rendered. Meaning, if you wanted to debug a template in helm-playground that has required or fail, you would very often need to comment them out in order to get it rendered initially, which is annoying.

Code:

helm-playground/go/lib/lib.go

Lines 131 to 135 in bec0a85

	// If the template contains `required`, we don't want to return an error which
	// would prevent previewing the entire template. Simply pass the value through.
	funcMap["required"] = func(warn string, val interface{}) (interface{}, error) {
	return val, nil
	}

helm-playground/go/lib/lib.go

Lines 138 to 142 in bec0a85

	// If the template contains `fail`, we don't want to return an error which
	// would prevent previewing the entire template. Return an empty string.
	funcMap["fail"] = func(val interface{}) (interface{}, error) {
	return "", nil
	}

But I'm open to suggestions on how it should behave.

Would it make more sense to print an error text into the template?

[Cenness]

I've expected playground to produce message passed to those functions. And not produce anything else.