Cannot convert the output of readFile into List for iteration

Question

I am using helmfile for my helm releases.

I have a yaml file projects.yaml

# projects.yaml
- yako
- pera
- okta

In values.yaml.gotmpl, i want to iterate thru the content of projects.yaml :

# values.yaml.gotmpl
{{ $projects := readFile 'projects.yaml' }}
{{ range $_, $project := $projects }}
   # do something with $project . e.g: tpl (readFile 'proj-config.yaml') (dict $name $project)
{{ end}}

Unfortunately , i got this error :

failed to render [values.yaml.gotmpl], because of template: stringTemplate:60:41:
 executing "stringTemplate" at <$projects>: range can't iterate over projects:
- yako
- pera
- okta

I made a lot of blind attempts to make it work :

• {{ range $_, $project := $projects | fromYaml }}
• {{ range $_, $project := $projects | toYaml }}
• {{ range $_, $project := $projects | list }}

No way

Answer 1

{{ $projects := readFile "./projects.yaml"}}
{{ range $_, $project := get "projects" $projects }}
    {{ $project.attr1 }}
{{end}}