Nested Parameters

Parameter values can be any valid JSON value, including nested objects. Let's update our action to use child properties of the event parameters.

1. Create the hello-person action with the following source code.

    function main(params) {
        return {payload:  'Hello, ' + params.person.name + ' from ' + params.person.place};
    }

    ic fn action create hello-person hello-person.js

   Now the action expects a single person parameter to have fields name and place.

2. Invoke the action with a single person parameter that is valid JSON.

   ic fn action invoke --result hello-person -p person '{"name": "Elrond", "place": "Rivendell"}'

   The result is the same because the CLI automatically parses the person parameter value into the structured object that the action now expects:

   {
       "payload": "Hello, Elrond from Rivendell"
   }