Object-like params in shortcodes

[popovich]

I have a shortcode which generates a stiff HTML structure with multiple elements positioned in specific places. I am looking for ways to pass params which would have a structure, similar to this json:

key: {
  name: Name,
  value: Value
}

and to pick a particular key within the shortcode to use that name and value accordingly. Like here:

{{ get key which equals to 'A' }}
<div>
  <h3>[get name param of that key]</h3>
  <div>[get value param of that key]</div>
</div>
{{ end }}

These names and values are translation strings which might slightly differ from page to page, but that I will take care of in the content of a page.

Appreciate any ideas!

[jmooring]

Shortcode arguments are always scalar. You can pass a pseudo array with something like “myarray=foo|bar|baz” then split inside the shortcode template. I suppose you could do something similar to pass a single-level map, something like “mymap=key1|value1|key|value2”.

[bep]

Shortcode args can be multiline using the text literal delimiter. Pass inn some JSON and use transform.Unmarshal.

[bep]

E.g.

{{< foo `
key: {
  name: Name,
  value: Value
}
` >}}

… untested, but in my head, it should work.

[popovich]

I’ve been playing with unmarshal and it almost works.
In the shortcode I tried this:

{{ $data := dict }}
{{ with .Params }}
  {{ with . | transform.Unmarshal }}
    {{ $data = .}}
  {{ end }}
{{ end }}

as well as this:

{{ $data := unmarshal .Params }}

and get the same error:

execute of template failed: template: shortcodes/suite.html:4:22: executing "shortcodes/suite.html" at <transform.Unmarshal>: error calling Unmarshal: type []interface {} not supported

Here is how the shortcode looks in the template:

{{< suite `
	"keyA": {
		"name": "Key A Title",
		"value": "Key A description text"
	},
	"keyB": {
		"name": "Key B Title",
		"value": "Key B description text even longer"
	}
	`
>}}

I guess, the error means that I’d need to somehow change my JSON structure? But then again the docs don’t point at any formatting limitations for unmarshal.

[irkode]

Enclose your json string in curly braces to get a proper json root object

`{
   "KeyA": ...,
   "keyB": ...
}`

To get the unnamed parameter (your json) string use

{{ .Get 0 }} or {{ index .Params 0 }}
Thats something you can unmarshall

{{ $data := .Get 0 | unmarshal }}
{{ index $data "keyB" }}

[popovich]

Those two tricks did it, thanks!