[JS] Input array of objects not unwrapped in Dotprompt request

[traxes9k]

Describe the bug
Input array not unwrapped in Dotprompt request.

To Reproduce
[dotprompt]

model: vertexai/gemini-1.5-pro-preview
config:
  temperature: 0.4
  topK: 32
  topP: 0.95
input:
  schema:
    user_input: string
    ai_backstory: string
    previous_choices(array): 
      choice_description: string
      consequence: string
{{role "user"}}
{
  "user_input": "{{user_input}}",
  "ai_backstory": "{{ai_backstory}}",
  "previous_choices":{{previous_choices}}
}

[INPUT]

{
  "user_input": "bla",
  "ai_backstory": "bla",
  "previous_choices": [
    {
      "choice_description": "bla",
      "consequence": "bla"
    },
    {
      "choice_description": "bla",
      "consequence": "bla"
    },
    {
      "choice_description": "bla",
      "consequence": "bla"
    }
  ]
}

[REQUEST TRACE]

"role": "user",
"content": [
  {
    "text": "\n{\n  \"user_input\": \"bla\",\n  \"ai_backstory\": \"bla\",\n  \"previous_choices\":\[object Object],[object Object],[object Object]\\n}\n"
  }
]

Expected behavior
Would expect the previous_choices array to be unpacked and sent with the request. This feature works for unwrapping outputs.

Screenshots

Runtime (please complete the following information):

• OS: MacOS

** Node version
v21.7.2

[MichaelDoyle]

Hey, thanks for reporting! Dotprompt files are essentially handlebars templates. You can look into the #each helper for how to unpack an array. https://handlebarsjs.com/guide/builtin-helpers.html#each. You're looking for JSON here, but it could be that you want something else, csv, ordered list, and so on. So how you define the template is really up to you. Let us know if you have more questions.

[traxes9k]

Thanks @MichaelDoyle ,

As per your excellent suggestion made the following changes to the prompt :

{{role "user"}}
{
  "user_input": "{{user_input}}",
  "ai_backstory": "{{ai_backstory}}",
  "previous_choices":[{{#each previous_choices}}
    {
      "choice_description":{{this.choice_description}}
      "consequence":{{this.consequence}}
    }
  {{/each}}]
}

Maybe this helps somebody else and thanks for your time.