How to define and call a catalog function with positional arguments in v0.9?

[weareoutman]

Currently, the args of FunctionCall is expected to be an object, and the catalog function definition also expects its parameters to be an object, while the string interpolation needs positional arguments sometimes, so how should we define and call a catalog function with positional arguments?

"${formatDate(${/currentDate}, 'yyyy-MM-dd')}"

A2UI/specification/v0_9/json/common_types.json

Lines 200 to 214 in 46a1324

	"FunctionCall": {
	"type": "object",
	"description": "Invokes a named function on the client.",
	"properties": {
	"call": {
	"type": "string",
	"description": "The name of the function to call."
	},
	"args": {
	"type": "object",
	"description": "Arguments passed to the function.",
	"additionalProperties": {
	"$ref": "#/$defs/DynamicValue"
	}
	},

A2UI/specification/v0_9/json/standard_catalog.json

Lines 597 to 605 in 46a1324

	"functions": [
	{
	"name": "required",
	"description": "Checks that the value is not null, undefined, or empty.",
	"returnType": "boolean",
	"parameters": {
	"allOf": [{ "$ref": "#/$defs/valueParam" }],
	"unevaluatedProperties": false
	}

[gspencergoog]

This is a very good point. I was imagining that functions would take an object with named parameters in it. But perhaps we just need to make the function args a list of objects instead of an object. I'll talk this out with the team.