Combination value .Get Accessing data from JSON data files

support
1

how to combine multiple Site data .Get

{{ $file := .Get "file" }}
{{ $file2 := .Get "file2" }}

{{ $dataFile := index .Site.Data.event (.Get "folder") $file }}
{{ $dataFile2 := index .Site.Data.event (.Get "folder") $file2 }}

how to put together $dataFile $dataFile2 ?

I try to use the append function, but one of the .Get values ​​from (file or file2) is not included an error will appear?

{{ $data := $dataFile | append $dataFile2 }}

<table>
<tr>
{{ range $key, $value := sort $data "title" "desc" }}
<td>{{.title}}</td>
{{ end }}
</tr>
</table>

There is no error when both values ​​are filled in

{{< event folder="java" file="rock" file2="punk" >}}

if

{{< event folder="java" file="rock" >}}

execute of template failed at <append $dataFile2>: error calling append: reflect: call of reflect.Value.Type on zero Value.

thanks, before that :slight_smile:

2

You need to code defensively, checking for existence before trying to append.

If the only parameters for this shortcode are “folder” and one or more files, I would refactor to handle any number of objects.

markdown

{{< foo >}}
events/parties/a
events/parties/b
events/parties/c
{{< /foo >}}
layouts/shortcodes/foo.html 
{{ $data := slice }}
{{ $objs := split (trim .Inner " \n\r" | replaceRE `\r` "") "\n" }}
{{ range $objs }}
  {{ with index site.Data (split . "/") }}
    {{ $data = $data | append . }}
  {{ else  }}
    {{ errorf "The %s shortcode was unable access site.Data.%s. See %s" $.Name (replaceRE "/" "." .) $.Position }}
  {{ end }}
{{ end }}

<pre>{{ jsonify (dict "indent" "  ") $data }}</pre>