Use Page Params in Template finds nothing

support
1

Hi, I’m trying to use Params from the frontmatter in the template to load js only under certain conditions, but it won’t work (using v0.121.1):

The Pages Frontmatter looks like this:

---
params:
  use_babylon: true
  use_lightbox: true
  use_dflip: false
---

In my custom-script-footer.html Partial-Template i have tried the following so far, following these guides:

{{ if .Params "use_babylon" }}
  USE_BABYLON - script code goes here
{{ end }}

That doesn’t find anything and is always false, so i checked that .

{{ . }}

That prints out: Page(/portfolio/plastik/portraitplastik-2/index.md)

so im shure I get the page Object at this point.

{{ .Params }}

that prints out

map[date:2023-08-06 12:51:00 +0000 +0000 description: draft:false images:[] iscjklanguage:false lastmod:2024-11-03 00:03:14 +0100 CET lead: menu:map[portfolio:map[identifier:portraitplastik-2-d52ef981-7487-4430-9a39-e82ab55a01bd parent:]] params:map[use_babylon:true use_dflip:false use_lightbox:true] publishdate:2023-08-06 12:51:00 +0000 +0000 title:Portraitplastik 2 weight:620]

So there seem to be a param map with my parameters:

{{ .Params.params }}

gives me:

map[use_babylon:true use_dflip:false use_lightbox:true]

so, I tried that:

{{ in .Params.params "use_babylon" }} --> is always false

and

{{ if .Params.params "use_babylon" }}
  USE_BABYLON - script code goes here
{{ end }}

leads to an exception.

Neither leads to the goal.

What am I missing here?

Best regards - carsten

1 Like
2

See Params | Hugo

Either use dot notation or the index function.

Looks like you read the Page.Param docs - without s which has a different behaviour.

Props for the good description. :slight_smile:

3

Thanks for the reply :slight_smile:

Attempt chaining identifiers

{{ .Params.use_babylon -}} --> gives nothing

{{ .Params.params.use_babylon -}} --> exception

Exception: execute of template failed at <.Params.params.use_babylon>: can’t evaluate field use_babylon in type string

Attempt with index

because {{ .Params.params }}gives me

map[use_babylon:true use_dflip:false use_lightbox:true]

I tried also the index like so

{{ index .Params.params "use_babylon" }}

Error: <index .Params.params “use_babylon”>: error calling index: index of type string with args [use_babylon] failed: cannot index slice/array with type string

{{ index .Params.params use_babylon }}

Error: function “use_babylon” not defined

So, that seemed not to work either.

4

Are you passing any context when you call the footer partial?

https://gohugo.io/troubleshooting/faq/#why-is-my-partial-template-not-rendered-as-expected

Are you call the partial function or the partialCached function?

5

in the Theme the footer/script-footer-custom.html is called from script-footer.html like so:

{{ partial "footer/script-footer-custom.html" . -}}

I have not yet found out where script-footer.html itself is called.

6

I can’t figure out what you’re doing wrong based on the above. I suggest you share your repository, or create a test repository that demonstrates the problem you’re having.

7

okay, thank you. i prepare that in the next days.

8

Update… ok reread the answers above…looke like you already tried…sry

So … rest of the post is obsolete…

Sry…deleted…

I go with @jmooring and we would need the complete context.

9

Hi folks i build dan example, but at last I updated my Hugo from 0.121.2 to 0.139.0.

Result: The error is gone. Everything works as it should :slight_smile:

10

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