How can I use multiple parameters in a script that runs against Daml-Hub?

Questions
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1

G-d willing

Hello,
Following my previous discussion, I would like to ask how do I define (and use) multiple parameters from within the --input-file.
I understand that this is a JSON file.
I was told that when it is only 1 parameter, the file will only contain the text value between " char.
But how do I separate different arguments when I need to use more than one?

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2

Hi @cohen.avraham,

To have multiple parameters for the --input-file you can create a custom data type which would correspond to the format and data you use for the input file.

For example:

module MyScript where

import Daml.Script

data ScriptSettings = ScriptSettings with
    userParty : Party
    userName : Text
    userEmail : Text
  deriving (Show, Eq)

runScript : ScriptSettings -> Script ()
runScript ScriptSettings{..} = do
  debug $ "The username is " <> userName
  return ()

Then the --input-file JSON might look something like:

{
  "userParty": "ledger-party-kj2340xfkjsdf0923j",
  "userName": "Alice"
  "userEmail": "alice@company.com"
}
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3

Thank you very much, it works.

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