iterate over plugin's output

[yaozongyou]

Hello, gomplate is really awesome, thanks, it is of great help.

And it works well on the following example:

$ cat cities.json 
{
    "cities": ["New York", "Seattle", "Chicago"]
}
$ cat cities.tmpl 
{{ range $index, $city := .cities }}
  {{ $index }}
  {{ $city }}
{{ end }}
$ ./gomplate_linux-amd64 -c .=./cities.json -f cities.tmpl

  0
  New York

  1
  Seattle

  2
  Chicago

is it possible to get cities from script?

$ ./cities.tmpl 
{{ range $index, $city := cities }}
  {{ $index }}
  {{ $city }}
{{ end }}
$ cat cities.sh 
#!/bin/bash

echo '["New York", "Seattle", "Chicago"]'
$ ./gomplate_linux-amd64 -f ./cities.tmpl  --plugin cities=./cities.sh
21:36:51 ERR  error="failed to render template ./cities.tmpl: template: ./cities.tmpl:1:26: executing \"./cities.tmpl\" at <cities>: range can't iterate over [\"New York\", \"Seattle\", \"Chicago\"]\n"

how to fix this?

[hairyhenderson]

Hi @yaozongyou, I've moved this issue to a discussion given that it's not a bug report.

The basic issue here is that the output from your script is an unparsed string. You need to parse the string as JSON with the data.ToJSON function before you can iterate through.

Try something like:

{{ range $index, $city := (cities | data.ToJSON) }}
  {{ $index }}
  {{ $city }}
{{ end }}