Cannot index slice/array with type string error

support
1

Hi all,

Here is my frontmatter:

service:
  enable : true
  service_item:
    # service item loop
    - title : "item title"
      images:
        - url: "images/abc.png"
          alt: "abc"          
        - url: "images/xyz.png"
          alt: "xyz"
      content: "content here"

The service item loop is working fine, but I just cant figure out how to access the values of the images array. When testing like this:

{{ range .images }}
  {{ . }}  
{{ end }}

I get the following output which looks the way I’d want it:

map
  [
    alt:abc 
    url:images/abc.png 
  ]
map
  [
    alt:xyz 
    url:images/xyz.png 
  ]

Next I tried range and retrieve via index:

{{ with .images }}
{{ range . }}
    {{ $image_key_value := (index . "url") }}
    {{ printf "Image path: %s<br />" $image_key_value | safeHTML }}  
{{ end }}
{{ end }}

Which threw this error:

execute of template failed: template: partials/service.html:23:36: executing "partials/service.html" at <index . "url">: error calling index: cannot index slice/array with type string

Any ideas on how to best get to this nested data? Is there a better way to structure my frontmatter? This should be an array, not sure why it’s seen as a string… I just need to get to the alt and url values.

A related thread seems to cover exactly this issue but without the string error:

Thanks!

2

You can access it directly like this:

{{ range .images }}
  {{ .url }} {{ .alt }}  
{{ end }}
3

thanks, but that was the first thing I tried. Throws this error:

executing "partials/service.html" at <.url>: can't evaluate field url in type interface {}
4

show me the full code how did you loop the service item.

Also, make sure each service item has images property.

5

Thanks pamubay, your last comment got me on the right track: I still had an images array definition in another service item that had a slightly different structure, now that they are all the same it’s working perfect! Thanks!

1 Like
6

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