IF is not failing on first of three false

support
1

I have the following construct:

  {{ $value := site.Data.foldername }}
  {{ if (and (isset $value "config") (isset $value.config "plugins") (isset $value.config.plugins "scss")) }}
  ...
  {{ end }}

$value exists, but has no section config and so $value.config.plugins and $value.config.plugins.scss do not exist.

(for example there is a folder data/foldername/something.toml with some toml config data in it)

I would expect the if-construct to bail out silently on the first and parameter (does $value have a section 'config"? nope.)

But it does not, it fails with the famed warning:

WARNING: calling IsSet with unsupported type "invalid" (<nil>) will always return false.

I am very sure that the if-line is throwing this warning (debugged it line by line).

If I change the line into three separate if lines the warning disappears.

  {{ if isset $value "config" }}
    {{ if isset $value.config "plugins" }}
      {{ if isset $value.config.plugins "scss" }}
      ...
      {{ end }}
    {{ end }}
  {{ end }}

Shouldn’t the first if being false lead to the whole loop be ignored without an error?

2

Hmm… it seems the issue is not with the if, but in the and and that logically needs to check at least two parameters. Back to the drawing board.

3

It could short curcuit though: if the first value is false the whole expression must be false.

4

This is going to be fixed soonish…

1 Like
5

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