Scope Traversal Behavior With Undefined Function Arguments In Lucee CFML 5.3.6.61

cascade.cfm

<cfscript>

	data = [
		"a": nullValue(),
		"b": "bee",
		"c": nullValue()
	];

	value = "The Spanish Inquisition";

	data.each(
		( key, value ) => {

			// CAUTION: When we reference VALUE here, ColdFusion is going to look for it
			// in a cascading number of places. First, the LOCAL scope. Then, the
			// ARGUMENTS scope. Then the VARIABLES scope. If VALUE is undefined in the
			// lower-level scopes, ColdFusion will continue to look for it higher-up in
			// the scope-chain.
			echo( key & " : " & ( value ?: "[undefined]" ) & " <br />" );

		}
	);

</cfscript>

url-test.cfm

<cfscript>

	userService = new UserService();

	userService.createUserAccount(
		name = "Ben",
		email = "ben@bennadel.com",
		password = "ourdeepestfearisnotthatweareinadequate"
	);

</cfscript>

UserService.cfc

component
	output = false
	hint = "I provide method for access user accounts."
	{

	public numeric function createUserAccount(
		required string name,
		required string email,
		required string password,
		string role
		) {

		var dbArguments = {
			name: name,
			email: email,
			password: password,

			// NOTE: If the role argument is undefined, we are going to fallback to a
			// standard user.
			// --
			// NOTE: If we provide a default value in the function signature, we would
			// not have any issues here.
			role: ( role ?: "user" )
		};

		systemOutput( serializeJson( dbArguments ), true, true );

	}

}