Read local json file and output it in a ld+json script block

support
1

I wrote my own template quite a while ago and stayed on an old hugo version for quite some time and want to port everything to the newest version of hugo now. I used the following code within a partial template to read a local json file with schema.org markup and output it in a ld+json script block:

{{- if or (in .Params.ot_schema_org "Person") }}
<script type="application/ld+json">
	{{- getJSON "data/schema-org-Person.json" -}}
</script> 
{{ end -}}

I noticed that getJSON is now depricated. I tried to port this using the Unmarshal/Marshal/Remarshal function, however when I do so I always end up with an script Block where my json is enclosed in "s and escaped and therefore the schema can’t be read. I get

<script type=application/ld+json>"{\"@context\":\"https://schema.org/\ .... }"</script>

instead of the expected

<script type=application/ld+json>{"@context":"https://schema.org .... }</script>

I think this is for security reasons, but I have a really hard time to get it working. Can someone please explain how I can get this working again? My last try was:

{{- if or (in .Params.ot_schema_org "Person") }}
{{ with resources.Get "data/schema-org-Person.json" }}
<script type="application/ld+json">{{- transform.Remarshal "json" . -}}</script>
{{ end }}
{{ end -}}

Best regards
Tobias

2

Your JSON file is already JSON, so there’s no need to unmarshal or remarshal anything. Just render its content and indicate that it’s safe JS so that Go’s html/template package doesn’t escape the content.

{{ with resources.Get "data/schema-org-Person.json" }}
  <script type="application/ld+json">{{ .Content | safeJS }}</script>
{{ end }}

https://gohugo.io/methods/resource/content/
https://gohugo.io/functions/safe/js/

If for some reason you don’t trust the JSON in the data file, use this construct as described in the safe.JS documentation:

{{ with resources.Get "data/schema-org-Person.json" | unmarshal }}
  <script type="application/ld+json">{{ . }}</script>
{{ end }}
2 Likes
3

No getjson with a data file schema.json in the data folder. Have a look here:

Or here (on french):