Range where $index == $var

support
1

How should I go about limiting results from range based on index? So for example, just the result with index of 2. My attempts have lead to undefined variable: $index.

{{ range $index, $element := where $myAPI $index eq $var }}

$myAPI uses getJSON. $var represents the desired index to be used (e.g 2) - this value will derive from front-matter.

2

Am curious, why do you need range if you’re only returning one item?

3

Maybe I don’t… Is there another / a better way of getting one item from a (JSON) array?

4

Yes. If you share your code we can help show you the better way. Or at least an example of your JSON file.

5

Not sure what code beyond the above would be useful. The JSON is a pretty typical API response, but I’ll include a simplified example below.

{
   "project":{
      "modules":[
         {
            "id":123,
            "thing":{
               "key":"value one"
            }
         },
         {
            "id":258,
            "thing":{
               "key":"value two"
            }
         },
         {
            "id":381,
            "thing":{
               "key":"value three"
            }
         }
      ]
}

modules in this example would be the bit I was ranging over.

6

I saved your JSON file (with a small syntax fix) to a new hugo site at data/myApi.json then used this template code to get the 2nd index. You can adapt it to your needs:

{{ $json := site.Data.myApi }}
{{ $index2 := index $json.project.modules 2 }}
7

That works, thanks :slight_smile: Where should I have been looking to find that syntax?

8

:slight_smile:
See https://gohugo.io/functions/index-function/