Google Unparsable Structured Data

[PhasecoreX]

What happened?

Google's site crawler notified me of an "unparsable structured data" issue, located on the main page.

congo/layouts/partials/schema.html

Lines 11 to 17 in e9f5908

	"publisher" : {
	"@type": "Person",
	"name": "{{ .Site.Author.name | safeJS }}",
	},
	{{ with .Site.Params.keywords }}"keywords": {{ . }},{{ end }}
	}
	</script>

Since I didn't have keywords on my home page, line 15 doesn't happen, leaving line 14 with a trailing comma that Google and JSON doesn't like:

<script type="[application/ld+json]()">
  {
    "@context": "https://schema.org",
    "@type": "WebSite",
    "@id": "http:\/\/localhost:1313\/",
    "name": "My Blog",
    "description": "My description",
    "inLanguage": "en",
    "url": "http:\/\/localhost:1313\/",
    "publisher" : {
      "@type": "Person",
      "name": "PhasecoreX",
    },
    
  }
  </script>

I figured I would try to add keywords to my blog, so I added them to my languages.en.toml like so:

keywords = ["keyword1", "keyword2", "keyword3"]

Not sure if this is where they are supposed to go or if it's the correct format, as I couldn't find any documentation, but it does populate it on the home page. However, it too has a trailing comma:

<script type="[application/ld+json]()">
  {
    "@context": "https://schema.org",
    "@type": "WebSite",
    "@id": "http:\/\/localhost:1313\/",
    "name": "My Blog",
    "description": "My description",
    "inLanguage": "en",
    "url": "http:\/\/localhost:1313\/",
    "publisher" : {
      "@type": "Person",
      "name": "PhasecoreX",
    },
    "keywords": ["keyword1","keyword2","keyword3"],
  }
  </script>

I think maybe it's just taking that whole list and placing it on the page as is, with that extra comma from {{ . }},{{ end }} after it. Thought it would loop over the values, but I guess not.

Theme version

v2.0.4

Hugo version

v0.92.2

What browsers are you seeing the problem on?

Firefox

Relevant Hugo log output

No response

[jpanther]

Thanks, this is definitely a bug. I'll make some adjustments to try to remove these erroneous commas.

keywords is a Hugo front matter parameter separate to the theme. You can find the documentation on these predefined params at the official Hugo docs: https://gohugo.io/content-management/front-matter#predefined

[PhasecoreX]

Ah that makes sense, forgot that there are Hugo predefined front matter parameters. Thanks for fixing this! Very clean, just having to swap the two lines around to fix it.